Modded ASUS P5Q/Pro/Deluxe/Premium BIOS

Firstly, I'd like to thank Ket for the work he's put into these BIOSes, it's appreciated.

However, I'm wondering if anyone has gotten the memory tRD pull-ins to do what they are supposed to.

I've tried every official, and everyone of the mBIOSes for my P5Q-D and the pull-ins have never worked.

I've heard people report them working, but their results contradict them. If all pull-ins are enabled memory bandwidth scores should increase by a few hundred points, and the latency should drop by a full ~2ns. Most people that report a change are only seeing changes that are within the margin of error of their tests. The display of the phases in the BIOS, and in programs like everest should also change, but they do not.

Has anyone gotten them to work, for real?

Quote:

---

Originally Posted by concretefire

Hey Ket.
Thanks for the work on the Bios.

Question about the bios and a specific setting. I have read when you overclock that you should set "SOMETHING" in the bios to 33mhz so that the FSB doesn't creep up on other hardware, as you increase FSB on the CPU.

Here's a screenshot, it's called : PCI Clock Synchronization
Link http://www.ocforums.com/showthread.php?t=515316
I believe it is the second actual picture from within the bios. I can't find this setting for the life of me in your bios. I'm sure it's called something else now. If you could just point me in the right direction please.

Also, a question about flashing. I use the Asus Update Utility from within the windows environment. Two things. Do YOU recommend another/safer way?

Also, that utility comes with with something built in called My Bios which more or less lets you change/create your own Bios Flash Screen. Do you have any opinions on this? Thanks again Ket.

BTW....if there is some magic "guide" out there for the 1406 Bios that shows you step by step, item by item of what everything does, I sure wish someone would point me to it. Thanks.

---

PCI clocks have been locked at 33MHz, regardless of FSB speed, on all major chipsets/boards for at least the last three to four years.

There is no need for a BIOS option to adjust or enable it. It's a given.

Quote:

---

Originally Posted by ieatrawbacos

PCI clocks have been locked at 33MHz, regardless of FSB speed, on all major chipsets/boards for at least the last three to four years.

There is no need for a BIOS option to adjust or enable it. It's a given.

---

:shakes: Yeah, I knew that. Just testing you guys out to keep you on your toes. :D 3 or 4 years huh? :shocked: Geez time flys when you're divorced.

Speaking of Bios. Back to the bios splash screen. On my p5K-pro using ket's bios....(and the original bios too) that Asus Splash screen disappears really fast. I mean like within 1 second flat. Is there any way to adjust that splash screen to stay up just a few seconds longer? I'm weird I know. But Ket or someone must know.

I can't figure out what the 'FSB Strap to NB' option is supposed to do. When set non-Auto it would seem to force a certain divider where Auto would calculate one from FSB and DRAM clock settings. But if that's true then 'FSB Freq', 'Strap', and 'DRAM Freq' should be mutually exclusive. You could set two of the three, but not all three - at least not to mutually exclusive values.

What am I missing?

Quote:

---

Originally Posted by DMF

I can't figure out what the 'FSB Strap to NB' option is supposed to do. When set non-Auto it would seem to force a certain divider where Auto would calculate one from FSB and DRAM clock settings. But if that's true then 'FSB Freq', 'Strap', and 'DRAM Freq' should be mutually exclusive. You could set two of the three, but not all three - at least not to mutually exclusive values.

What am I missing?

---

Yep , yep.....add that one among the many, many other features/seatings on that page. I wish there was a step by step guide. Or rather, just a line by line definition with a brief explanation and maybe one or two "for instance"
type of things.

I've been screwing around with this Mobo/CPU for 2 weeks now and just tonight got the fuzzies to up the FSB to 333 , setting ram vcore at 2.1 and left everything else on auto. Booted right up. Temps were a tad high for me so I checked vdim and it was at 1.42:shocked::shocked:
So I rebooted and set it at 1.325. It was a shot in the dark number but knew it was close based on what I have read so far. Again, booted right up....now temps 10 C cooler. Until I find out more about each setting. I'm just gonna leave it here for now and play around another week I guess.

Quote:

---

Originally Posted by concretefire

Temps were a tad high for me so I checked vdim and it was at 1.42:shocked::shocked:

---

Perhaps you meant vcore? vdimm is for RAM, and I highly doubt there's any DDR2 RAM kit that actually boots at 1.42V.
And yeah, 1.42V on a 45nm CPU is something to be scared off with normal air cooling.

hallo again ket :) i'm beck i have tried 3 mobos to choose the best one :) lanparty dk p45, lanparty dk x38 and biostar tpower so i've decide to get p5q-e :) as i see no more new bioses after 1406 why? :) and do you still will do the urban bios or you do not think about thin anymore? :)
and how do you think i've got 4x1 gb trnscend axeram 1200+ micron d9gmh do will this mobo and this ram well?
thank's a lot

Quote:

---

Originally Posted by DMF

I can't figure out what the 'FSB Strap to NB' option is supposed to do. When set non-Auto it would seem to force a certain divider where Auto would calculate one from FSB and DRAM clock settings. But if that's true then 'FSB Freq', 'Strap', and 'DRAM Freq' should be mutually exclusive. You could set two of the three, but not all three - at least not to mutually exclusive values.

What am I missing?

---

All it does is limit the memory ratios you can use, and possibly loosens some of the subtimings that are still on auto.

In the olden days of yester year (well like two years ago), the strap settings used to control tRD before anyone knew what tRD was. Now it doesn't do jack on mobos with manual tRD control.

Quote:

---

Originally Posted by ieatrawbacos

Firstly, I'd like to thank Ket for the work he's put into these BIOSes, it's appreciated.

However, I'm wondering if anyone has gotten the memory tRD pull-ins to do what they are supposed to.

I've tried every official, and everyone of the mBIOSes for my P5Q-D and the pull-ins have never worked.

I've heard people report them working, but their results contradict them. If all pull-ins are enabled memory bandwidth scores should increase by a few hundred points, and the latency should drop by a full ~2ns. Most people that report a change are only seeing changes that are within the margin of error of their tests. The display of the phases in the BIOS, and in programs like everest should also change, but they do not.

Has anyone gotten them to work, for real?

---

I'm not going to comment on the PCI Frequency thing :p: but, I will comment on the pul ins. I can get them to work on the 0803 "Modded" BIOS for me and I have the 9450 in my rig#1 of my sig. I haven't really payed attention to if it is working or not with the 1406. I will check this out tonight when I get time and report back to you. I'm thinking it should be working in 1406 but, I might be wrong. I know for a fact that it works in 0803 "Modded" for me though. I still haven't tried the 0703 or 6 what ever the last number is yet. I need to test that one out and see if I can get to 4GHZ with it.

I'll give the 803M bios another shot and see what happens.

What memory ratio are you using? 5:6?

Pull-ins don't work for me with the 803M BIOS.

No change in benchmarks, no change in stability, no change in the BIOS tRD phase display and a "neutral" read delay phase adjust in everest; just like the 704, 803, 1201, 1306, 1406, modded and unmodded BIOSes I've tried.

Running 1406 bios here and just adjusted all pull-ins to Enabled. No change in Everest benchmark, guess they don't work with this bios, they did however make a difference with 1 of the older bios versions, can't remember which tho.

Larry

Quote:

---

Originally Posted by axy1985

Perhaps you meant vcore? vdimm is for RAM, and I highly doubt there's any DDR2 RAM kit that actually boots at 1.42V.
And yeah, 1.42V on a 45nm CPU is something to be scared off with normal air cooling.

---

Yeah, sorry. I meant vcore was at 1.42. I adjust Vdimm for the Ram to 2.1 as per the specs. My bad

Quote:

---

Originally Posted by ieatrawbacos

In the olden days of yester year (well like two years ago), the strap settings used to control tRD before anyone knew what tRD was. Now it doesn't do jack on mobos with manual tRD control.

---

I can achieve much higher fsb frequencies on the 333mhz strap than with the others (my q9450's default fsb is 1333, but I'm not sure if this is why). That makes me think that it must be adjusting something because there are differences between the 333mhz and 400mhz straps at the same clock. Maybe the subtimings you mentioned?

----

Pull-ins have no effect for me either (q9450, mushkin ascent pc2-8500, p5q-e).

Quote:

---

Originally Posted by samsonJS

I can achieve much higher fsb frequencies on the 333mhz strap than with the others (my q9450's default fsb is 1333, but I'm not sure if this is why). That makes me think that it must be adjusting something because there are differences between the 333mhz and 400mhz straps at the same clock. Maybe the subtimings you mentioned?

---

I have all of my subtimings as well as my tRD set manually, and I see no difference in FSB OCing between the 400 and 333 straps.

It's probably some change in timings that ASUS has linked to the strap setting, as well as the different memory ratios available, that have something to do with the differences you see.

It's also possible that the strap setting controls something that I'm not aware of that has more of an effect on your system than mine. I'm using an X3350 which is essentially the same thing as a Q9450, so I don't think the CPU is responsible for such a difference.

Googled a thread right here on the forum. I've done a little editing to make it clearer:

Quote:

---

Your north bridge has an internal clock speed and latencies just like your CPU and memory. The FSB of your north bridge can be found by dividing your original CPU multiplier by your set CPU multiplier and then multiplying by your set FSB.

So if you are running a E6600 (2.4 GHz or 266 * 9) at 3.2GHz (400 x 8) your NB FSB is:

(9 / 8) x 400 = 450Mhz FSB (1800Mhz Total)

Just like your memory may be able to run at 4-4-4-12 at 1000Mhz but needs to run at 5-5-5-15 at 1200Mhz, your north bridge has a series of latencies which it must adjust in order to maintain stability at its FSB. These latencies seem to play a far more significant role in system performance than memory latencies. - emphasis mine

Intel has predefined specific latencies at specific NB FSB speeds. They are referred to as straps. There is a strap for when the NB FSB is 1066Mhz and under, 1333Mhz FSB and under, 1600Mhz FSB and under, etc. When you go from the 1066Mhz FSB strap to the 1333Mhz FSB strap, the north bridge's internal latencies loosen to allow for greater stability.

ASUS has redefined the NB strap so that the 1333Mhz FSB strap does not come into effect until 401Mhz FSB (1604Mhz). Other perimeters of straps are someone unknown.

---

Ponder this table from farther down in the thread. Note that ref freq (reference frequency) is another name for 'FSB Strap to NB'.
http://www.xtremesystems.org/forums/...1&d=1167934741
I haven't quite figured out the relationship between ref freq, mem freq, and ram speed. mem freq is the value selected for the 'DRAM Frequency' setting. Note that in all cases the CPU frequency is constant.

Here's another, from here, which seems to be describing the [Auto] setting:

Quote:

---

The FSB "strap" is very similar to RAM SPD timings. On Intel's new chipsets, the northbridge has its own clock speed and latency timings, just like RAM. Below 400mhz FSB, your ASUS northbridge is running the 1066mhz strap setting. Once you go up to 401 mhz, it switches to the 1333mhz strap setting. However, just like RAM latency timings, when the clock speed is lower, the standard timings are also lower. I'll make up an example.

Let's say your mobo is set to keep the 1066 strap from 266fsb to 400fsb. And, lets say that the northbridge latency defaults to "1" at the 1066 strap setting. Well, as you overclock from 266mhz FSB to 267mhz FSB, your northbridge speed also increases, let's say from 1066 to 1070 (quad pumped). Your nb won't have any problem with that, but as you get closer and closer to 400mhz FSB, your nb speed is going to be going up as well, possibly as high as 1602mhz (my numbers probably aren't right, but the general concept is the same). Problem is, your NB might not be able to run at 1602mhz with a latency of "1". Well the good news is, once the NB changes to the 1333mhz strap at 401mhz FSB, your NB latency is set to "2". Again, just like RAM, your NB can run at a higher speed with a higher latency.

So, your RAM really isn't affected by your strap, but your northbridge speed is.

---

Whoa!! Here is an excellent thread, with pitchers!!

Quote:

---

Originally Posted by DMF

I haven't quite figured out the relationship between ref freq, mem freq, and ram speed. mem freq is the value selected for the 'DRAM Frequency' setting. Note that in all cases the CPU frequency is constant.

---

In that table "Ref freq" is the 'strap', "mem freq" is the memory ratio, and "ram speed" is the final memory clock; pretty straight forward.

Quote:

---

Originally Posted by DMF

Whoa!! Here is an excellent thread, with pitchers!!

---

What's going on in that thread you linked to is exactly what I was talking about here:

Quote:

---

Originally Posted by ieatrawbacos

In the olden days of yester year (well like two years ago), the strap settings used to control tRD before anyone knew what tRD was. Now it doesn't do jack on mobos with manual tRD control.

---

The P965 board tested there did not have any way to adjust tRD setting except through strap changes. In addition, almost no one knew what tRD was (it's the delay the chipset needs to move data from the memory clock domain to the FSB clock domain) at that time (over two years ago).

The strap settings do not do anything but limit the allowable memory ratios and auto adjust some of the subtimings on the P5Qs.

If you manually set everything, there is no difference in performance between the strap settings, all other things being equal.

Pull-ins do work, however nothing is a given. Many things are hardware dependent and it is indeed possible to have any number of hardware configurations where enabling pull-ins will make no significant measurable difference. Also don't forget that the principal of pull-ins is almost purely theoretical, and even in theory pull-ins do not do much for improving latencies - negligable at best.

I have to disagree on pretty much every point.

The clock crossing operation Intel's chipsets perform is quite well documented at this point. The number of phases is directly linked to the FSB/DRAM ratio, and the delay for each phase is the tRD. The Effect of pull-ins are also well documented. On other boards, enabling them reduces the tRD on a particular phase of the clock crossing procedure, and the performance impact from doing so is directly related to the number of phases changed. If you enable them all, performance is exactly the same as if you have dropped the base tRD a full point. If you enable half of the available pull-ins of each memory channel, the performance is right in the middle of the two tRD notches in question. I've tested this myself on the DFI Blood Iron, and the DFI X48-T2RSB Plus. At 400MHz FSB, each tRD phase is 2.5ns of memory latency. If I'm running tRD 7 on the two boards I mentioned above (at 400MHz FSB) and drop the tRD to 6, OR enable all pull-ins, memory latency drops a full 2-2.5ns, and bandwidth increases by a few hundred MB/s all round, as it should. Furthermore, enabling the pull-ins can also have a significant effect on stability, when they work. If I am already near the limit of stability, enabling any of the pull-ins might cause instability. Enabling them all has the same effect on stability as dropping the tRD a full point, which is not surprising since it has the same effect on performance. This is why, that when tweaking, one, two, or more phases are left with the pull-ins disabled. The entire purpose of allowing tRD phase pull-ins is to allow access to what is essentially a fractional tRD. If tRD 7 is totaly stable, but tRD 6 un-bootable, chances are that you have plenty of room to enable some pull-ins for a very measurable boost in performance, if the pull-ins work correctly on the board in question. If one tRD level is on the verge of stability, enabling all pull-ins except for one can give nearly the performance of the lower tRD level without compromising system stability.

In my, and many other's experiences with other boards, where the pull-ins do work, they work regardless of hardware configuration. I've tried them with more than a dozen different sets of memory, and a half dozen CPU (ranging from E2140s to X3350s), at a huge range of FSB and memory ratio settings. On every board where the tRDs ever behaved as predicted, they always behaved as predicted.

I can only conclude, based on a great deal of first hand testing, and even more second hand research/experimentation, that ASUS has not enabled the tRD phase pull-in setting that they show in their BIOSes. I've tried almost a dozen different BIOSes with this P5Q deluxe, at FSB ranging from 200 to 520, using every memory ratio available, and ASUS' pull-ins have never done anything noticeable, for either performance or stability. Everest, which has the capability of detecting pull-in settings (I've tried it) also shows no change on the P5Q (D). Indeed, the very tRD by phase display in the BIOS settings page itself shows no change.

They don't work, not on the P5Q-Deluxe anyway.

Some articles on Anandtech about tRD, the clock crossing procedure, and pull-ins:
http://www.anandtech.com/mb/showdoc.aspx?i=3129&p=9
http://www.anandtech.com/mb/showdoc.aspx?i=3208&p=5

If you like, I can take some pictures of the phase display in the BIOS of one of my Blood Irons, and run benches with various pull-in setting, to show what working pull-in settings should do.

Quote:

---

Originally Posted by ieatrawbacos

I have to disagree on pretty much every point.

The clock crossing operation Intel's chipsets perform is quite well documented at this point. The number of phases is directly linked to the FSB/DRAM ratio, and the delay for each phase is the tRD. The Effect of pull-ins are also well documented. On other boards, enabling them reduces the tRD on a particular phase of the clock crossing procedure, and the performance impact from doing so is directly related to the number of phases changed. If you enable them all, performance is exactly the same as if you have dropped the base tRD a full point. If you enable half of the available pull-ins of each memory channel, the performance is right in the middle of the two tRD notches in question. I've tested this myself on the DFI Blood Iron, and the DFI X48-T2RSB Plus. At 400MHz FSB, each tRD phase is 2.5ns of memory latency. If I'm running tRD 7 on the two boards I mentioned above (at 400MHz FSB) and drop the tRD to 6, OR enable all pull-ins, memory latency drops a full 2-2.5ns, and bandwidth increases by a few hundred MB/s all round, as it should. Furthermore, enabling the pull-ins can also have a significant effect on stability, when they work. If I am already near the limit of stability, enabling any of the pull-ins might cause instability. Enabling them all has the same effect on stability as dropping the tRD a full point, which is not surprising since it has the same effect on performance. This is why, that when tweaking, one, two, or more phases are left with the pull-ins disabled. The entire purpose of allowing tRD phase pull-ins is to allow access to what is essentially a fractional tRD. If tRD 7 is totaly stable, but tRD 6 un-bootable, chances are that you have plenty of room to enable some pull-ins for a very measurable boost in performance, if the pull-ins work correctly on the board in question. If one tRD level is on the verge of stability, enabling all pull-ins except for one can give nearly the performance of the lower tRD level without compromising system stability.

In my, and many other's experiences with other boards, where the pull-ins do work, they work regardless of hardware configuration. I've tried them with more than a dozen different sets of memory, and a half dozen CPU (ranging from E2140s to X3350s), at a huge range of FSB and memory ratio settings. On every board where the tRDs ever behaved as predicted, they always behaved as predicted.

I can only conclude, based on a great deal of first hand testing, and even more second hand research/experimentation, that ASUS has not enabled the tRD phase pull-in setting that they show in their BIOSes. I've tried almost a dozen different BIOSes with this P5Q deluxe, at FSB ranging from 200 to 520, using every memory ratio available, and ASUS' pull-ins have never done anything noticeable, for either performance or stability. Everest, which has the capability of detecting pull-in settings (I've tried it) also shows no change on the P5Q (D). Indeed, the very tRD by phase display in the BIOS settings page itself shows no change.

They don't work, not on the P5Q-Deluxe anyway.

Some articles on Anandtech about tRD, the clock crossing procedure, and pull-ins:
http://www.anandtech.com/mb/showdoc.aspx?i=3129&p=9
http://www.anandtech.com/mb/showdoc.aspx?i=3208&p=5

If you like, I can take some pictures of the phase display in the BIOS of one of my Blood Irons, and run benches with various pull-in setting, to show what working pull-in settings should do.

---

They work for me with Kets modded 0803 so they do work just by accident I think when he modded it.

Yeah pull-ins worked quite well on my previous DFI; there was a measureable difference in benching.

I have yet to see them work with the newer bioses for my P5Q-D, though i'm pretty sure when i tested they were working on at least one of the older bioses...just cannot remember which one.

No difference in Everest means they are not working, as there will absolutely be a measureable difference when they are.

lol. Somebody thinks 2.5ns makes a significant difference in the real world :p:

True; I was never looking to fix the pull-ins as the difference is so insignificant, but the fact they did get fixed is a bonus I guess :D

Hi every one
I try to install this beta version of windows 7 on my p5q with no hope
befor the last step of installation the blue screen appear and the installation stop
try many dvds with variable speed
try the same dvd with gigapyte EP35-DS3R and the installation done well
replace the ram with the ram in EP35-DS3R and the same error
try many version of bios and the same
disable the component in bios
The onboard sound
the onboard network
the onboard IDE
surely some other stuff..
with no help
try another vega also
so I think we need abios to solve this prob.

Quote:

---

Originally Posted by Ket

lol. Somebody thinks 2.5ns makes a significant difference in the real world :p:

True; I was never looking to fix the pull-ins as the difference is so insignificant, but the fact they did get fixed is a bonus I guess :D

---

I agree 100% it makes no difference in real world use.

But for Everest, it certainly is noticeable...

Hi everybody
I upgraded my p5q pro bios to 1406m and that made my pc work (at last) with 3 memory sticks.
Before it worked just with 2 sticks (posted also with 3 sticks but refused to load any OS, just BSOD)

But as before, it won't post with all 4 sticks inserted. No post, no beeps, nothing... I checked every possible combination using 2 or 3 sticks and it seems that either sticks or slots are not dead. :shrug:
I tried to raise NB and DRAM voltages a bit, but no success, change timing parameters, nothing changed.
Just can't post with all sticks... :(

Any suggestion?

here's my configuration:

(of course) ASUS P5Q Pro
INTEL Core 2 Quad 9550 2,83 Ghz
PNY memory 4x2Gb DDR2-800 PC2-6400 CL5 (1.8v)
Sparkle GeForce 9500 GT 1024 DDR2 PCI-E 2.0

Thank you!

Test 1 stick in each Slot then you will know for sure.

Ket Can you post or pm links to tools for editing AMI bios, please? need to do mod for my P5Q Dlx

Quote:

---

Originally Posted by humeyboy

Test 1 stick in each Slot then you will know for sure.

---

I tried again... every slot and stick works. :confused:
Just I noticed another case in which it won't post: leaving the first slot empty.

so

1-1-1-0 OK
1-0-1-1 OK
1-1-0-1 OK
0-1-1-1 No POST
1-1-1-1 No POST

:( :( :(
Don't know what to think...

Have you tried upping the NB Voltage to carry 4 Sticks ?.

Set Memory to 2.1v and NB to at least 1.30v just to test it out with all 4 sticks.

Yes I tried to raise them up to 2.1v and 1.38v, step by step, but nothing changed...
I played a bit trying different bios version and I noticed that with older bios, system would post just with 2 memory sticks inserted (either yellow or black), so maybe I just have to hope in a new bios release...

Have you tried manually increasing the tRFC value; four sticks often needs a looser setting.

Quote:

---

Originally Posted by Ket

lol. Somebody thinks 2.5ns makes a significant difference in the real world :p:

---

The difference, while very small as far as overall system performance is concerned, it is still nearly as much as moving to the next higher memory ratio, or ten MHz on the FSB.

hallo everybody :) can anybody write for me the whole timings for transcend axeram 1200+ on p5q-e plz
need all SPD Plz not only 5-5-5-15

Quote:

---

Have you tried manually increasing the tRFC value; four sticks often needs a looser setting.

---

Nothing again... :shakes:
I tried also to raise latency, common performace level, tried to enable pull-ins for both channels, nothing, just nothing.
Now it even won't post if I leave second Slot empty (before it worked).

I start to feel discouraged... :(

Is there any modded BIOS v1406 for P5Q Deluxe ? Checking all 46 pages is just not in my plan...

Quote:

---

Originally Posted by RejZoR

Is there any modded BIOS v1406 for P5Q Deluxe ? Checking all 46 pages is just not in my plan...

---

go to the first page, ket has done a zip with all "Asus P5Q bioses"

1406 to ASUS P5Q Deluxe ? no win ZIP fill:( rar :banana::banana::banana::banana: XP op here

Yeah i missed that link. Btw, Martin, forget about crappy WinZIP. Get yourself 7-zip... far better tool for compressed files.

Ket, Is it at all possible to split the GTL's 2 ways on the P5Q-Deluxe? By this I mean tighten up how much the change is in bios, ie; the numerical change from .650 to .655 is default and the question is could it be changed in bios to do say .650 to .653, then .655 etc? Fine tuning is all but impossible now.

Question # 2; Would it also be possible to split the CPU GTL's up, ie; 0/2 and 1/3 to 0/1/2/3 ? If so, how much time do you think would be involved in modifying these values?

Thank you for your time and Great bios's.

Larry

Quote:

---

Originally Posted by Big Lar

Ket, Is it at all possible to split the GTL's 2 ways on the P5Q-Deluxe? By this I mean tighten up how much the change is in bios, ie; the numerical change from .650 to .655 is default and the question is could it be changed in bios to do say .650 to .653, then .655 etc? Fine tuning is all but impossible now.

Question # 2; Would it also be possible to split the CPU GTL's up, ie; 0/2 and 1/3 to 0/1/2/3 ? If so, how much time do you think would be involved in modifying these values?

Thank you for your time and Great bios's.

Larry

---

I belive its impossible, when ket just changed few options name everything just jammed :(

just like to let P5Q Series owners know that there´s a new Bios 1501 on Asus FTP Server out.
ftp://ftp.asus.com.tw/pub/Asus/mb/socket775/P5Q/
waiting for ket mood

Thanx hema, there's a new bios for P5Q PRO too! :D :clap:
They say they just improved Kingston KVR800D2N6/2G DDR2 800MHz 2G memory compatibility... let's see if it will work with my poor PNYs, I'll let you know! :)

I have this type of memory
I will try this bios

Too good to be true... once again, nothing changed. :shakes:

hall i will once ask more :) does anybody knows the transcend axeram 1200+ full spd timings for p5q-e?

Hi everyone! I'm trying to get the best performance out of my Q6600, but I can only get it to 3GHz (prime-stable). If I give it more FSB, prime crashes and I get a BSOD in Vista. :(

The Hardware I use:
QuadCore Q6600
Thermalright tower
Asus P5Q Deluxe
4x 2GB G.Skill PC2-8000U CL5-5-5-15 (DDR2-1000)
SeaSonic 500W PSU

And here are the Biossettings (Ai Tweaker):
CPU Ratio Setting - [Auto]
FSB Frequency - [333] ( CPU-Z says 334 real) (9x333=3GHz)
PCIE Frequency - [100]
FSB Strap to North Bridgle - [Auto]
DRAM Frequency - [DDR2-890MHz]
DRAM CLK Skew on Channel A1 - [Auto]
DRAM CLK Skew on Channel A2 - [Auto]
DRAM CLK Skew on Channel B1 - [Auto]
DRAM CLK Skew on Channel B2 - [Auto]
DRAM Timing Control - [Auto]

DRAM Static Read Control - [Disabled]
DRAM Read Training - [Disabled]
MEM. OC Charger - [Enabled]
Ai Click Twister - [Light]

CPU Voltage - [Auto] ( CPU-Z says 1,41V real! Is this ok (24/7)?)
CPU GTL Voltage Reference (0/2) - [Auto]
CPU GTL Voltage Reference (1/3) - [Auto]
CPU PPL Voltage - [Auto]
FSB Termination Voltage - [Auto]
DRAM Voltage - [2.06]
NB Voltage - [Auto]
NB GTL Reference - [Auto]
SB Voltage - [Auto]
PCIE SATA Voltage - [Auto]

Load-Line Calibration - [Enabled]
CPU Spread Spectrum - [Disabled]
PCIE Spread Spectrum - [Disabled]
CPU Clock Skew - [Normal]
NBClock Skew - [Normal]
CPU Margin Enhancement - [Optimized]

I've read now, that the CPU Margin Enhancement should work better in "performance" for Quads, other say, that it could damage the CPU. And then there is of course the Bios version. Currently I'm running 1004 (out-of-the-box). Some now say, that version 0803 is the best (works without CPU Margin Enhancement) and others say, version 1406 is the one to go for (and not to forget v.1302). And then there are of course the modded ones here. :confused: I really could use some help here...

Thank you very much!
Sick

Quote:

---

Originally Posted by SickProdigy

Hi everyone! I'm trying to get the best performance out of my Q6600, but I can only get it to 3GHz (prime-stable). If I give it more FSB, prime crashes and I get a BSOD in Vista. :(

---

This isn't really the thread for it, but try turning down the CPU Ratio and pushing the FSB. That will tell you whether you are limited by memory or by CPU.

I have a problem that the bios is giving my memory to litle volt on atuto. To use the g.skill 6400 3.4.3.3 I have first to put in some corsair 1,8v sticks to boot, and set vmem to 2,1v in bios.

After this is done, I can boot with mye g.skill. Using P5Q-E mBIOS 1306.

Is it posible to set auto v-mem to 2.1?

at the CPU Ratio of 6 the FSB 350 is stable. So should I dump the Quad? Still can give it back to the seller.

Quote:

---

Originally Posted by Nizzen

I have a problem that the bios is giving my memory to litle volt on atuto. To use the g.skill 6400 3.4.3.3 I have first to put in some corsair 1,8v sticks to boot, and set vmem to 2,1v in bios.

After this is done, I can boot with mye g.skill. Using P5Q-E mBIOS 1306.

Is it posible to set auto v-mem to 2.1?

---

Why dont you set the voltage manually to 2.1?

Quote:

---

Originally Posted by SickProdigy

Why dont you set the voltage manually to 2.1?

---

When i reset the bios, the volt is back to auto. When I overclock and have to reset bios, i have to change memory sticks to boot.

Understand?

Where is Ket at? The 1501 BIOS has been avail for 2 whole days and no modded BIOS released yet :D

where can i find the 1501 for the p5q-e? oem non modded that is.

Quote:

---

Originally Posted by Martin.v.r

1406 to ASUS P5Q Deluxe ? no win ZIP fill:( rar :banana::banana::banana::banana: XP op here

---

Looks like it won't work for you then. Better luck next year.

Quote:

---

Originally Posted by B.E.E.F.

Looks like it won't work for you then. Better luck next year.

---

that was epic.. :rofl:

Quote:

---

Originally Posted by SickProdigy

at the CPU Ratio of 6 the FSB 350 is stable. So should I dump the Quad? Still can give it back to the seller.

---

[strike]Yeah sounds like you're CPU limited.[/strike] I'll let someone else say what Vcore the Q6600 needs (or will take) but afaik that's the only option for more clockage. How much risk you will accept and whether the result is fast enough - both those are up to you.

Maybe the previous owner overvolted and degraded the chip... Or maybe it's an A0 stepping? ;)

Edit:Now that I re-read this, I don't think you've proven that you're CPU-limited. I first read your new FSB as 450, not 350. 350 is only 16 more than your max with full CPU.

Try testing the thing again with only two sticks, then maybe each stick alone.

Quote:

---

Originally Posted by oMek

where can i find the 1501 for the p5q-e? oem non modded that is.

---

www.asus.com

Not really... I can't seem ti find the 1501 BIOS for the P5Q-e anywhere on the site... not official I guess.

hallo i've got such problem my Ram is not in p5q-e QVL so thay ar not working well on my p5q-e this is 1200 mhz rams and i think this is the problem thay ar on D9GMH micron chips, i've tried all combinations but system is not stable when overclocking in stock it's working good on 1066 mhz but not overclocking well and i think this is memory suport problem because thay are PC9600 so i would like to ask to integreate in next bonus suport for 1200mhz ram especialy transcend axeram 1200+

Quote:

---

Originally Posted by axy1985

Not really... I can't seem ti find the 1501 BIOS for the P5Q-e anywhere on the site... not official I guess.

---

not yet for E and Dlx series... only for vanilla P5Q and the Pro version

lol the P5Q mBIOSes aren't the only things on my to-do list guys :p: Others things that are on my to-do list include THIS :D I'll do some pimped up 1501 mBIOSes soon :up:

Quote:

---

Originally Posted by Maurizio

I tried again... every slot and stick works. :confused:
Just I noticed another case in which it won't post: leaving the first slot empty.

so

1-1-1-0 OK
1-0-1-1 OK
1-1-0-1 OK
0-1-1-1 No POST
1-1-1-1 No POST

:( :( :(
Don't know what to think...

---

While its very possible this is a BIOS bug (hence the release of BIOS 1501) it may have something to do with the second part of the memory table, which I am unable to change with the tools I have.

Quote:

---

Originally Posted by ieatrawbacos

Have you tried manually increasing the tRFC value; four sticks often needs a looser setting.



The difference, while very small as far as overall system performance is concerned, it is still nearly as much as moving to the next higher memory ratio, or ten MHz on the FSB.

---

... and as we all know, 10MHz FSB it really rather useless with 99% of wolfies being able to handle 550MHz FSB+ :p

Quote:

---

Originally Posted by Big Lar

Ket, Is it at all possible to split the GTL's 2 ways on the P5Q-Deluxe? By this I mean tighten up how much the change is in bios, ie; the numerical change from .650 to .655 is default and the question is could it be changed in bios to do say .650 to .653, then .655 etc? Fine tuning is all but impossible now.

Question # 2; Would it also be possible to split the CPU GTL's up, ie; 0/2 and 1/3 to 0/1/2/3 ? If so, how much time do you think would be involved in modifying these values?

Thank you for your time and Great bios's.

Larry

---

Reverse engineering a BIOS would be an absolute nightmare (but still the most easy way). I've been considering reverse engineering a P5Q Premium BIOS to work with all higher end P5Q series boards, but again such work would take a long time, and there would likely be nightmare scenarios to overcome.

ED - 1501 mBIOSes ready.

P5Q mBIOS 1501
P5Q Pro 1501m

Let me know how these mBIOSes perform, unlike other mBIOSes I've done I have not had the chance to test out the vanilla 1501.

hey ket will the new mbioses work with the P5Q-E?? I dumped the biostar and went asus!

Not without some reverse engineering. The -E uses different ICs for some stuff. Do you still have that modded BIOS for the Biostar? I recently suffered catastrophic HDD failure thanks to a virus.

yep I do I still have the biostar to so I can still test if you want, BTW I just put your newest p5q-e mbios in and lol this board does not boot for ram with micron ic's but any others it does and works a little better with ram timings to.

1406 you mean? I used the modded version of that for a while and it worked fine with my Micron D9 GKX :shrug:

iunno it wont boot with my cell shocks at all, but any other it will. also the ramtimings are hideos above 800mhz ddr2 what is the trick to get pl8 with good ddr2 800 tiings like 4-4-4-12?? cuz right now my latency is like 74ns!!!! if lower the pl any lower then 11 in memset it bsods :shrug:

Try ket's 704m BIOS. I can drive my PL lower with that BIOS than any other on my P5Q-E + Q9450. If I don't need the power of 3.6+ghz I run at 2.64ghz = 8x 330 fsb (3 below stock), DDR2-792 (333mhz strap), 4-4-4-10, PL5. Mushkin Ascent DDR2-1066.

sweet! I'll give it a go thx!

no 1501 bios to Asus/mb/socket775/P5Q_Deluxe ???

Quote:

---

Originally Posted by philbrown23

sweet! I'll give it a go thx!

---

Yep 703\704m are very sweet BIOSes, and IMO the least bugged. Fan speeds still work as they should when enabling Q-Fan (al later BIOS versions its broken, fan speed stays the same nomatter what Q-Fan profile you choose) and most importantly, no CPU M-E! As for the PL, my system with 1200MHz+ mem frequency will boot with a PL of 6 :D Oh yeah and if you can email me that modded TPower BIOS I'll start having another look at things with it, got a little free time to spare on it atm.

Quote:

---

Originally Posted by Martin.v.r

no 1501 bios to Asus/mb/socket775/P5Q_Deluxe ???

---

Nope, only the P5Q and P5Q Pro have a 1501 BIOS so far, I guess asus realised the "lower" highend boards are actually better than the supposed higher class P5Q series boards :D Like anything, the more complex something is made the higher the failure rate, and from what I've seen theres been A LOT of -E and Deluxe RMAs but RMAs fro the non Pros, Pros and Premiums RMAs are practically unheard of.

Quote:

---

Originally Posted by Ket

Nope, only the P5Q and P5Q Pro have a 1501 BIOS so far, I guess asus realised the "lower" highend boards are actually better than the supposed higher class P5Q series boards :D Like anything, the more complex something is made the higher the failure rate, and from what I've seen theres been A LOT of -E and Deluxe RMAs but RMAs fro the non Pros, Pros and Premiums RMAs are practically unheard of.

---

:confused:, most users that tend to buy the high end ones to OC it, most users that buy the low end boards run mostly stock... really got me puzzled with your claim(s) Ket...:shrug:

You got real numbers to back up your claim of the high failure rate ? till now zero dead Pro's, E or Dlx's in my fav shop...

Quote:

---

Originally Posted by Ket
While its very possible this is a BIOS bug (hence the release of BIOS 1501) it may have something to do with the second part of the memory table, which I am unable to change with the tools I have.

---

Thank you anyway, Ket! I'll wait for new BIOS releases (or the day I'll buy new memories!), in the meantime I'm just using 3 slots, better than nothing. :)

Quote:

---

Originally Posted by Ket

Yep 703\704m are very sweet BIOSes, and IMO the least bugged. Fan speeds still work as they should when enabling Q-Fan (al later BIOS versions its broken, fan speed stays the same nomatter what Q-Fan profile you choose) and most importantly, no CPU M-E! As for the PL, my system with 1200MHz+ mem frequency will boot with a PL of 6 :D Oh yeah and if you can email me that modded TPower BIOS I'll start having another look at things with it, got a little free time to spare on it atm.



Nope, only the P5Q and P5Q Pro have a 1501 BIOS so far, I guess asus realised the "lower" highend boards are actually better than the supposed higher class P5Q series boards :D Like anything, the more complex something is made the higher the failure rate, and from what I've seen theres been A LOT of -E and Deluxe RMAs but RMAs fro the non Pros, Pros and Premiums RMAs are practically unheard of.

---

hey man i really need your help all of this bioses is not stable with 1200 transcend axeram MicronD9GMH i have tested rams with memtest and also on other mb (DFI LANPARTY DK P45) and on this mb its working great i have tryed all bioses so problems still persists :( can you mod bios with more stabile capabilities of 1200 mhz rams ? some better memory table

thank you

well the 704M bios has MAJOR raid 0 problems just jhangs at boot if I set sata to raid, and major usb mass storage probs, wont post if my 500gb usb 2.0 drive is plugged in with sata set to IDE, so I flashed back as I run raid0 on 1 of my o/s's and need my usb hdd, but with mem perf on that bios I was able to get a PL of 8 instead of 10! where can the PL be set in bios???? just cant find it?

Ai Transaction Booster, first setting above the pull-ins, I can't recall the name they give it right now.

thanks m8 now when I set that the ram boots are what its rated at, why when on auto it boots at :banana::banana::banana::banana:ed up speeds?? sounds like asus has some teeny auto bugs but hey at least they have bios support.

plz give me the 703/704 for p5q-e

Quote:

---

Originally Posted by Leeghoofd

:confused:, most users that tend to buy the high end ones to OC it, most users that buy the low end boards run mostly stock... really got me puzzled with your claim(s) Ket...:shrug:

You got real numbers to back up your claim of the high failure rate ? till now zero dead Pro's, E or Dlx's in my fav shop...

---

Things like that there are no "real" numbers, you should know that by now. Just some good old fashioned googling.

Quote:

---

Originally Posted by philbrown23

thanks m8 now when I set that the ram boots are what its rated at, why when on auto it boots at :banana::banana::banana::banana:ed up speeds?? sounds like asus has some teeny auto bugs but hey at least they have bios support.

---

The only auto timing bugs I've noticed are for DRAM RAS# Active to Precharge (should be 15, but sometimes auto sets 18), Row Refresh Cycle Time (bit variable this, but again doesn't always set the spd value) and I think the other one was Write to Pre delay, sometimes sets this slightly tighter than spd.

Quote:

---

Originally Posted by Vazovskiiii

plz give me the 703/704 for p5q-e

---

Link is on the first page.

Quote:

---

Originally Posted by Vazovskiiii

plz give me the 703/704 for p5q-e

---

here you go lad :

P5Q-E 704m.rar

Quote:

---

Originally Posted by Ket

Things like that there are no "real" numbers, you should know that by now. Just some good old fashioned googling.

---

Well most drops outs are due to inexperience of the end user, not entirely the boards/bios fault... most of the end user aren't aware of what they do, just pump volts and all will be fine... you got the world wide web as your friend ; do some research first before pushing things...and sometimes it takes some time for the engineers to catch up with bios support but we all know that story don't we :) Even my 680i Striker still works rock solid with an E8500@4Ghz

These Q-E and Dlx series are for me the more reliable boards I had after the P5K Dlx ones... if set up correctly and bundled with good compatible ram and co they work like a charm... maybe not the best, but solid boards after all...

Some are yes, but a lot of threads I stumbled on researching other things were to do with specific board issues such as fan headers dying, RAID chips just going poof, stuff like that. I'm just glad my P5Q Pro has been good.

this bios 704 is not working on my system :) need bios with full suport of 1200 memory :(

Anyone know about the strange *1200MHZ* memory setting that only appears with everything on auto? Might only be on earlier BIOS versions, I've only observed it on 704m haven't checked others. My memory fails during POST at that clock but I'm curious about what it sets everything to. Actually it fails before POST so I don't even see what it clocks the CPU to. Mabye I need some d9.

It seems like a big red "crazy OC!" button but I can't try it out.

I'll say it again for anyone thats missed it, do NOT mess with different BIOS versions once you found one that is stable and reliable! I can't comment on everything to do with these mBIOSes, I can just say based on my hardware, each of these BIOSes works well, with the best (for me) being 703m.

Hey Ket Im sure if you new how or could find it you would of mentioned it but ...

Is there anything in the bios on the P5Q pro that would limit the FSB to 500? Is there any hardware trick that they do to limit the fsb to 500?

Just seems kind of odd to me that the pro's are all (or pretty much all) limited to exactly 490 to 505 fsb. Wish they would not have locked them or whatever they did to keep them from going higher, seems like a good board otherwise.

Thats a tricky question to answer for many reasons. Firstly, theres always the obvious the current lot of chips asus have just wont push anymore than around 500, second its entirely possible for asus to "lock" a maximum FSB with the use of a different PLL vs. their higher end boards, thirdly heat plays a big factor with the P45 and ICH10R, neither are too happy with temps above 50c or so, so active cooling on both would likely help a lot. Fourth, a lot of people say they have been able to bump their FSB a healthy sum with these mBIOSes (somewhere around 12-20MHz). So assuming theres some kind of "conspiracy" going on with the lower highend P5Q series boards this is a bullet list I would have;

- Different PLL and \ or tighter internal chipset timings used to limit FSB
- Cheaper cooling solution hinders potential (I strongly recommend lapping the NB and SB heatsinks to a nice flat shiny finish and putting a fan on the NB)
- Crippled memory support on lower models possibly plays a factor. (In fact, I'm willing to put my neck on the line and say if it wasn't for me changing various things and letting the entire net know about my findings when the P5Q Pro first came out, and possibly plain P5Q, still wouldn't be able to hit 1000MHz memory stable nevermind 1200MHz and asus would blame it on the memory, even those who have memory rated for 1000MHz or faster)

Quote:

---

Originally Posted by Leeghoofd

:confused:, most users that tend to buy the high end ones to OC it, most users that buy the low end boards run mostly stock...

---

That actually has absolutely nothing to do with what he said:

Quote:

---

Originally Posted by Ket View Post
Nope, only the P5Q and P5Q Pro have a 1501 BIOS so far, I guess asus realised the "lower" highend boards are actually better than the supposed higher class P5Q series boards Like anything, the more complex something is made the higher the failure rate, and from what I've seen theres been A LOT of -E and Deluxe RMAs but RMAs fro the non Pros, Pros and Premiums RMAs are practically unheard of.

---

He's saying that the lower end boards may actually perform better than the high end boards because the high end boards are loaded down with a bunch of extra crap that hurts performance more than it helps.

YOU'RE saying that people who buy lower end boards tend to overclock less than those that buy higher end boards. (And actually the burden of proof is on you and not him. Anyone in the know would know that just because a board has eighteen Ethernet ports, wi-fi, and a satellite dish, doesn't mean it's going to get you the best clocks.)

So that's like Ket and I talking about how much we liked the new James Bond movie and you suddenly asking us to prove that the entertainment industry's revenues don't go up in a time of crisis. :)

Sorry for the double post (but this is a completely different idea).

I can't get my Crucial Ballistix to work for the life of me on 1406m. Any ideas?

Also... I can't get the board (P5Q Pro) to boot with the CMOS jumper in the default position. It ONLY boots with the jumper completely off.

Thats weird :S try flashing your BIOS with a different one? might solve both issues.

Quote:

---

Originally Posted by Ket

Thats weird :S try flashing your BIOS with a different one? might solve both issues.

---

Alright. I'll try 1501 and work my way back from there. But I hear some of the earlier bios didn't work with E0 steppings. Is that true?

Lot's of strange things with this board (doesn't boot with a pin on the default position on CLRTC... fans spin and power goes to devices but it doesn't post with Ballistix...)

1501m here I come!

Hallo Ket You Have Changed Your Idea To Do Uber Bios? Or You Still Do Not Have Time? : )
And Is There Bios 1501 For P5q-e?

Quote:

---

Originally Posted by Vazovskiiii

Hallo Ket You Have Changed Your Idea To Do Uber Bios? Or You Still Do Not Have Time? : )
And Is There Bios 1501 For P5q-e?

---

I afraid that its impossible to tweak these bioses even further, it will just cause dead bios chips
And no, there is not 1501 for P5Q-E yet, 1406 does fine on -E Board, Bios updating is only needed when system is unstable or some else weird stuff

Hi Ket!
P5Q mBIOS 1501 link is broken, pls upload again.

Quote:

---

Originally Posted by norain

That actually has absolutely nothing to do with what he said

He's saying that the lower end boards may actually perform better than the high end boards because the high end boards are loaded down with a bunch of extra crap that hurts performance more than it helps.

YOU'RE saying that people who buy lower end boards tend to overclock less than those that buy higher end boards. (And actually the burden of proof is on you and not him. Anyone in the know would know that just because a board has eighteen Ethernet ports, wi-fi, and a satellite dish, doesn't mean it's going to get you the best clocks.)

---

I'm still referring to the high number of dropouts KET mentioned on the high end segment and less dropouts on the lower end boards... not at all referring to OCability...anyway most of the clockers, disable most of the onboard features or gadgets or whatever... I go with the higher end mobo's just for the better heatsink and bios features...

I sold loads of boards , Pro, E and Dlx versions... till now no drop outs (referring to DEAD boards), but the peeps that tend to push ram and co (read Oc'ers) are usually more sceptical about a boards performance... I'm well aware that does not mean that if you buy a Ferrari that you will not have any issues at all...

Did I ever say that the high ends should clock better due to their extra gadgets ? I told that most peeps that want high FSB action tend to go more rapidly for E or Dlx versions...they have more confidence in the better heatsink design, more phases, better capacitors, more features in the bios... whatever makes the client tick... the former are not gadgets but might be essentials to a solid clock... gadgets to me are eg expressgate, 4 lan ports etc...

Totally different as what you are pointing at me, but could be my english as it's no my mother tongue...and I got misinterpreted. I just wanted to see if he had some numbers to prove that their are way more dropouts in the higher price category... and almost none in the lower end... for an example some users even want an RMA because a LED stopped working... I prefer to swap mobo's to those that have real issues, the ones with the minor defaults or nagging about nothing clients go the normal RMA way...:yepp:

Till now I assembled about 20 P5Q series in total... some for old people that just want to surf, for gamers, musicians,... no drop outs yet... I just chose the boards according to their preferences, wishes... I don't have to prove anything : I just know what I see in the shop, on forums and experience on LAN parties... most users don't even OC at all and have zero ideas how to even enter the bios... Enthousiast as us are not at common as you might think... but the once I know that do mess in the bios will be more drawn to a higher end model then a low end...

Just had to write this as a correction , back on topic plz to KET's lovely biosses....

Quote:

---

Originally Posted by norain

Alright. I'll try 1501 and work my way back from there. But I hear some of the earlier bios didn't work with E0 steppings. Is that true?

Lot's of strange things with this board (doesn't boot with a pin on the default position on CLRTC... fans spin and power goes to devices but it doesn't post with Ballistix...)

1501m here I come!

---

If you flash from DOS be sure to include the switch for reprogramming the bootblock as well. I'm not sure if its the same scenario with you but when I got my replacement Pro (CPU fan header seemed like it was on its way out on my first board) the jumper for the chassis intrusion wasn't making proper contact with the pins, and hence wouldn't complete POST. A similar thing may be happening with your CMOS jumper, try switching it for a jumper you have that fits very snug over the pins :up:

There are also still plans for that uber BIOS, just too much to do and not enough time. Lastly, the links do work, their just very popular so a little patience is needed sometimes.

Hi i am wondering if this modded bios can help me with my problem.
I have an ASUS P5Q-E and no matter what change i make to BIOS it can't reboot again.
Let me try it to explain it as simple as i can
At first No Overclocking for the time being
Lets say i go to BIOS to change e.g Express Gate to Disabled
I save settings and exit the system goes to the procedure of restarting but ....all the fans are spinning and power it seems's its flowing in the system but i have only a totally black screen.
I have to shutdown the system...pull out the plugs....hit power button couple of time (without power) wait a couple more seconds.......put the plug back on and then i can power up my system.It is a rather bizzare annoyance and right now i can stand it but it is holding me back from any kind of playing with BIOS settings.
My system is
MB:P5q-E bios 1406 ( also this situation existed with older one i think it was 12xx)
CPU:6600 E0
RAM:2GB Teamgroup - 800 4/4/4/12 this is the only setting i have changed because once again(i had an msi 965 pl) these mem sticks aren't recognized properly and i have to put the timings,voltage manually....the problem existed and before where everything was auto
HDD: 2 x500
PSU : Enermax 400W
VGA: MSI 7600GT

Your no boot after a BIOS change could be caused by various things, so I'll list them bullet-style.

- NB and \ or SB not having enough voltage, this is a rare occurrence with the P45s, the solution is to notch things up (eg; both 1.3v) and see if it happens after a save and exit.
- You may need to set RAM voltage and timings manually. Depending on the ICs your RAM has, you may need to try up to 2.2v.
- You may need to set CPU voltage and \ or FSB strap manually
- Your PSU might be slightly flaky
- Check all of your connections and jumpers
- Try flashing your BIOS (ideally 1501) power down, set CMOS jumper to "clear", remove battery and power cord, press power button 3-4 times for about 5 secs each time to discharge the capacitors, then leave for 5-10 mins.

Well thanks for the reply Ket.
I am not overclocking so SB/NB/CPU undervoltage and FSB strap applies to me also???
Ram Voltage and timings are Set manually because (again) auto recognized them as lower.I have teamgroup TXDD2048m800hc4dc-d so i have set them to 2.0V and timings 4-4-4-12 .....everything else auto....the problematic was not affected after changing these even when i removed 1 stick.
Any idea to check "flacky" PSU?
Probably i have to wait for 1501 bios....
Has anyone else encountered such a problem??

I had a similar problem that was solved by bumping fsb termination.

what value should i put ?
Do u overclock?