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I found my cpu hits a voltage slope around 460 and peaks at 510 @ 1.5v (1.45 real). It's sweet spot is 7x450 @ 1.3v (around 1.24v real).
So i dropped the multi and am running it at 533x6 (3.2Ghz) to peak my ram. It likes it just fine.
I have an old revision and very very limited jumper free settings :(
Triskleon, there's no unlinked mode in p965's. Closest you can do is 1:1.
mrtheshaggy, 533 with old rev p5b vanilla! Quite impressive. Don't be so sad about lack of voltage control. It looks like those older rev's are clocking better than the new ones.
That said, what voltages are you looking to change?? you've already go stability at 533 :).
ya I know that now, was looking for something similar, but thats OK.
Running 8x400 1:1 now (E4300), only thing I changed was Vcore to 1.45, everything else is on auto. So Im pritty happy ;)
Just one thing, FSB Voltage, is that for the NB?
Quote:
Originally Posted by ziddey
None now, I'm happy with what its at. I was gonna push the memory to a higher ratio but decided to leave it alone as is.
I'm gonna wait for p5k-d prices to drop and revisions to come out. Jump on it prior to wolfdale and will worry about tweaking memory with that mobo.
thanks for answering my pm shaggy.
Just noticed that my sound is crappy, got any ideas? I got the latest drivers for it, any setting I should turn off/on?
ah, well at 533, I doubt you'd be able to use 4:5 ;). But if you did want to use 400fsb with 2:3, vdimm pencil mod shouldn't be too hard to find
vfsb is the same as vtt. for 400fsb, you can leave at stock 1.2vQuote:
Originally Posted by Triskelon
ok, thanks
any info about the sound issues? its really bad.
I'd recommend dropping onboard sound, disabling it via bios, and just pay $25 for a sound blaster audigy pci card.
that sux but I guess I have to... the sound is sooo bad! thanks man
Might just use the other board I got home (P5N-E Sli)
is the board basically the same as the p5n-e sli?
I don't understand what you mean by that. p5n uses 650i. p5b uses p965. totally different
oh man my bad - don't know what i was thinking sorry
Does the newest Asus oc'ing utility work on this board? Has anyone found a way to oc it in windows?
I can get mine to boot at 500fsb X9 with 6700es and it did 470fsb X10 with the 6700 on dice. I picked up an ln2 dewar and would like to be able to oc in windows.
i dont believe so sorry
I was afraid of that, thats why mine is sitting on a shelf in the closet. IMO thats the biggest drawback of this board.Quote:
Originally Posted by ziddey
Yeah, I'm pretty disappointed with it too. No o/cing in windows, serious voltage sag on the CPU and vDIMM limited to 2.1v. Sheesh, all of the high-end ram wants 2.2 or 2.3 by default.
Vmods are your friend.. You also have to vmod the deluxe version if you dont want vdroop and all that so the only thing worse with vanilla is no clockgen utility. Luckily mine boots into windows at 550fsb np.
Quote:
Originally Posted by Rockhammer
thats true....
only vmods can put that board on another level
mine had vdimm, vdrop and vcore mods and was a pretty solid board
could hit 537 fsb.....none of the other 5 or 6 boards i had could do that
just solder some pots and get in the game......
;)
I guess I will have too make the mods. I used to do that kinda thing all the time, but my eyes aren't as sharp and my hands aren't as steady as they used to be. Getting old sucks, I don't recommend it.
Don't blame age on it, I'm 53 and I did 5 mods on this board (vcore, vdoop, vdimm, vfsb, and vmch). ;)Quote:
Originally Posted by Rockhammer
I just don't understand why Asus can't get their own oc'ing tool to work on this board? Clockgen or Setfsb would be great, but at this point I'd gladly settle for the Asus app. :yepp:
Yep. Further up the thread, or maybe it was in another one, someone said that the clock chip on this board is a PITA to program.
The memory voltage is the one that bugs me. The board doesn't even support the recommend defaut voltage for the high-end ram modules.
Just pencilmod so that baseline is 2.0vdimm or something. that'd give you up to 2.3
New Version allows 2.45v vdimm.
You should use a dmm to verify the vdimm's you set. Otherwise, you could be very pissed when your ram blows up.
In my case, my 1.04g p5b vanilla is like this:
2.15 is same as setting 2.10, for 2.12v actual
2.25, 2.30, 2.35, 2.40 all actually set 2.37v. Now if you're setting 2.35 or 2.40, then fine, but 2.25 and 2.30 also set 2.37, which is no good.
then, 2.45 actually sets 2.55v.
New BIOS version or new board? I'd check but the download section at ASUS's site loads at about 20 kbps for me.Quote:
Originally Posted by Driver
If new board, unlucky me, I just bought it today :(
where'd you buy from. newegg's been shipping rev1.04g's for quite a while. I got mine back in Feb.
Like I said though, exercise caution with the different vdimm settings, and do note that if you set higher than 2.1v (2.15v in actuality, since it's the same thing), aisuite will crash on load.
So the 1.04g boards have the option for higher vDIMM in the bios? Is there some special trick to access these settings, I don't see it in mine.
hmm maybe they addressed it in later versions. it probably wasn't meant to be since setting higher than 2.1v would cause aisuite to crash, and higher values were not what was actually being set.
you can vdimm pencil mod for 1.04g. that should be mroe than sufficient
Hey Ziddey,
I noticed you seem to have a lot of experience with P5B.. perhaps you could help out.
Using stock cooling, P4B 1.04G, all volts auto, I got E6420 up to 375 fsb (Corsair at 2.1V, and well below its rated clocks). I tried raising all volts up to 2nd highest and it could only get 380 fsb and no more. Tried again with 6x multi, and same thing.
Any suggestions?
EDIT: yes the P5B 1.04G has higher range voltage for Vdimm, Vnb etc, in the bios.
I heard these boards have problems with 333 - 400FSB range. Try 401MHz and see what happens
Quote:
Originally Posted by The Coolest
same problem. tried 405 and 410 too for good measure.
tried increasing CPU voltage, Vnb, Vfsb... nothing.
used 6x multi. disabled TM, disabled halt state, turned off static read.
when I get back home I'll try upping the south bridge voltage... its just about the only think I havent tried...
what ram are you using? try using just one stick at first if you're really stuck.
try loose subtimings to rule them out as well. 5-5-5-15-6-42-4-11-7-13. ram 1:1, not 4:5. static read off. try 105 pcie.
You shouldn't need more than 1.4vnb, but try as high as 1.55v for the time being (do note until you verify vnb with dmm, you can't trust what you set)
vfsb should be fine at stock, but bump it one if you must.
how hot is the nb getting?
thank you for your suggestions.Quote:
Originally Posted by ziddey
I have Corsair 6400C4. Have not tested well, but ran games etc at 800Mhz 2.0V 4-4-4-12.. and at 2.1V got at least 890Mhz also to desktop to run programs...
so far all things point to NB/motherboard/CPU causing the fsb wall. The CPU is certainly able to do much higher clocks at 1.25V since it gets stuck at same max fsb with 6x and 8x. Could be CPU cant handle higher fsb. Maybe some poor connection of IC on motherboard... cant tell unless I try different mobo/CPU...
strange , with quad the temp probe will not go below 6°C when putting cascade on the board :D
There's a new BIOS, probably beta since it's not been announced on the download pages...
ftp://ftp.asus.com.tw/pub/ASUS/mb/so...B/P5B-1405.zip
1. Update CPU ucode to support new processor
2. Revise SLP 2.0 rule
3. Enable hotplug support under AHCI mode
4. Fix displayed CPU frequency incorrectly after downgrade CPU ratio
Quote:
Originally Posted by daimaah
THANKS!
EDIT: new BIOS didn't fix any of my issues... except that the frequency is reported correctly now when using 7x multiplier on E6420 (default 8x).
So, will this board now support quad core cpu's? Did it before...?
-Ryan
P5B vanilla can do 440fsb at least ;)
different E6420 ;)
what do u guys use to cool the northbridge and the heat pipe joint ? I just added a 40mm fan just in case even tough I am doing only like 460fsb? Also does the nb Voltage need to be raised for that type of fsb?
which board are you referring to? the p5b vanilla doesn't have any heatpipes. what vnb are you using? it definitely wouldn't hurt to glue a 40mm on the heatsink
Has anybody tested the new bios released 06/27/07?
I have tried 1405 for P5B. No real advantages.Quote:
Originally Posted by jacky89
BTW: Sorry to repeat, but this is P5B thread NOT P5B Deluxe, which has different layout and different BIOS, and different cooling.
P5B - small regular NB heatsink. No RAID. No firewire. newest BIOS 1405. Many component for power circuitry are smaller or missing.
P5B Deluxe - heatpipe cooling solution. All the goodies. Better power circuitry. Better overclocking ;)
Is there any way to unlock more options in the bios.
Thanks
like what
it'd help to say what you want to accomplish
Hey guys i recently bought some new gear and this thread has been really helpful to me. :) My setup consists of:
e6300 week 27, stock intel HSF
asus P5B (vanilla) rev. 1.03G (no mods)
2 x 512MB Corsair XMS2 DDR2-800
POS video card (8800GTS coming soon)
Thermaltake Toughpower 750w PSU
OC so far (100% stable):
cpu @ 3.2 GHz (458 x 7)
vcore = 1.29v (real, idle)
FSB = 1832 MHz
vMCH = 1.20v
vdimm = 2.1v
Ram = 916 MHz
Ram Timings (read down the screen) 5-5-5-15-6-42-6-12-10-18
This board is great. It has no trouble reaching 470+ mhz at only 1.20v (ram not stable tho) :)
I have the data sheet for RT9214.
http://www.richtek.com/www_en/Docs/DS9214-06.pdf
I may have worked out the pencil mod. Pin 6 is FB and pin 3 is GROUND - if i drew line in no#2 pencil across IC from pin 6 to pin 3 it would decrease pin 6 FB signal and increase output voltage. I have done similar mod to my 6800 vanilla to incease memory voltage. I'll try it later tonight with some crap ram. Anyone wanna try it first on a P5B they dont need?
that's exactly right, but since the ic has 8 pins, 3 and 6 are on different sides. by drawing from one side to the other, you won't get much resistance drop at all.
if you can't find a resistor in the area that actually has continuity between leg6 and ground to shade, get conductive ink and draw from one leg to just about the other leg. then use pencil to try to finish the loop. that'd allow more resistance drop.
thats what i did on my video card - made the middle 80% of the line with conductive silver & joined the pins to it with pencil. I'll try to find a resistor with continuity to pin 6 at one end & other end to ground and pencil that, but if i cant i'll try connecting the IC leg 6 to IC leg 3.Quote:
Originally Posted by ziddey
There can only be 3 possible resistors, R2, R3 or R4 in RT9124 data sheet.
Success! I have found the pencil mod for P5B rev 1.03G. Its the same story as ziddey found with the 1.04G - there are 2 resistors that have same resistance as leg 6 to ground (circled red & green in pic). I measured both at 567 Ohms, and IC leg 6 to ground = 567 Ohms.
Shading did not lower resistance much at all. I got it down to ~550. I rubbed it off and used a thin smear of conductive silver compound (almost dead short) which i rubbed back thinner to increase resistance to ~517 Ohms. At first i tried resistor circled green. I powered on with no ram & measured vdimm = 1.35v! no good. I removed the silver with acetone and tried the resistor i have circled red.
At 517 Ohms, i got the following voltages:
Bios----Real
1.8v----1.98v
1.9v----2.08v
2.0v----2.15v
2.1v----2.24v
I should note my dmm measured vdimm before mod was 2.06v when setting 2.1v in bios.
I had some dramas with no post a few times after doing the mod, at 2.24v. I fully powered off and rebooted & got overclocking failed message. After some experimenting, it seems my ram doesnt like more than 2.08v. It will do 916MHz on 2.08v but not fully tested stable yet. Im not happy about that. However at lower speeds, the ram runs fine at 2.24v, so the mod works.
I also fixed my high temperature problem - i didnt have PECI enabled in bios. I now have it enabled and TAT reads 39/41 idle, 62/64 under full load, same as core temp. That is at 1.344v stable (vdroop modded).
GREAT JOB !. timbo i'll surely test that out . thanks!. yeah i need some vdimm mod too. my rams holding me back. and i can't crank up the voltage anymore haha. nice one
well done timbosan. i don't know how many people have wanted pencil vdimm for 1.03g. and i've tried to tell people to find them, but you've been the first to actually follow through. people will love you :)
Hello All:
I found this page and form about a week ago and it seems to be exactly what I am looking for. I have built my own computers for years but I have never overclocked or changed memory timings, voltage etc before. I have had the P5B vanilla for about a month now and it works great. Now I want to start experimenting a little. I will update the CPU in a few weeks when prices go down a little. Can anyone recommend some memory, CPU and voltage settings I might try with the following hardware?
Thanks
Great Form
Yeah it had to be done. Thanks for the help mate :)Quote:
Originally Posted by ziddey
I dont have much experience with prescotts. Just keep vcore under 1.4v (air cooled) and keep temps under 60-70, best to be under 60*C.Quote:
Originally Posted by htredneck
vMCH - set to 1.2v and if needed increase to 1.45v
vdimm - 2.1v should see 900MHz @ 5-5-5-15 from that ram depending on the version (micron ic's clock better).
Set ram timing by SPD - disable this & set timing manually 5-5-5-15 for about the 900 mhz, test for errors & play with timings.
Lock pic-e frequency to 100 (increase to 101 - 110 if games/vid benches crashing)
Lock pci frequency to 33.3
That should get you started. Post back if you need anything :)
About the PCIE clock. I think I have either 100 or 101 set in BIOS.
Based on some comments I think I should increase to 110 or more. I ran small-FFT at 2.92Ghz for 2 hours, with <50C. However, playing BF2 after about an hour at 2.8Ghz (notice lower fsb and mem clocks), the game gets choppy for no apparent reason, and/or I get blue screen.
First impression was that the default clocks on video card are too agressive or poor cooling, but it barely gets over 60C.
Can somebody please confirm that PCIE fixes such issues, and if so what value to set?
Thanks
I got the RAM at 5-5-5-15 now. The SPD had it set at 5-5-5-18. It seems to be working fine with the new settings but I donīt real know what this means. I will buy a new CPU in a few weeks but I am not sure which one. Could someone recommend one with a good cost/performance ratio that would go well with my hardware?
Thanks
its not on the normal website & there's no description of what changes have been made so i'd wait till you know its not beta....
thats the P5b. not P5bv. thats probably why you don't see it on the site
p5b is ptb vanilla is you crazy
What speed are you at so far? There are some good threads in the general memory section that explain memory timings. They instruct the ram how to operate, basically how long to wait before executing a certain command. The '18' on the end is very 'loose', and your ram should be fine with 15, maybe lower. There are also subtimings, so a loose starting point would be (read down the screen):Quote:
Originally Posted by htredneck
5-5-5-15-6-42-8-11-12-15 - should be ok for 900MHz ~2.1v
standard timing for your ram at 800mhz is:
5-5-5-12-6-42-3-11-5-14
The higher you push it the looser the timings need to be. For a cpu recommendation, depends what you wanna do with it, but i like the e6300, e6400 as a match for the P5B and some PC6400. The e6400 is probably a better match for P5B & PC6400 as many e6300's can do 500 mhz+ which a lot of PC6400 cant do. 1000mhz+ capable ram isnt cheap.
Thanks for the great answers. Here is some info from Everest. I am looking at 3 different processors:
E6300
E6320
E6600
I will be doing a little of everything (some over clocking, Games, video editing etc.)
As always, any help would be great.
CPU Properties:
CPU Type Intel Pentium 4 530J
CPU Alias Prescott
CPU Stepping E0
Engineering Sample No
CPUID CPU Name Intel(R) Pentium(R) 4 CPU 3.00GHz
CPUID Revision 00000F41h
CPU Speed:
CPU Clock 3373.3 MHz (original: 3000 MHz, overclock: 12%)
CPU Multiplier 15.0x
CPU FSB 224.9 MHz (original: 200 MHz, overclock: 12%)
Memory Bus 449.8 MHz
DRAM:FSB Ratio 12:6
CPU Cache:
L1 Trace Cache 12K Instructions
L1 Data Cache 16 KB
L2 Cache 1 MB (On-Die, ECC, ATC, Full-Speed)
Motherboard Properties:
Motherboard ID 64-1501-000001-00101111-062607-Intel-BW$A0545000_BIOS DATE: 06/26/07 16:11:44 VER: 08.00.12
Motherboard Name Asus P5B (3 PCI, 3 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN)
Chipset Properties:
Motherboard Chipset Intel Broadwater P965
Memory Timings 5-5-5-15 (CL-RCD-RP-RAS)
Command Rate (CR) 2T
SPD Memory Modules:
DIMM1: Corsair CM2X1024-6400 1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
DIMM3: Corsair CM2X1024-6400 1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
BIOS Properties:
System BIOS Date 06/26/07
Video BIOS Date 01/25/07
DMI BIOS Version 1501
Graphics Processor Properties:
Video Adapter Asus EN7900GS
GPU Code Name G71GS (PCI Express x16 10DE / 0292, Rev A1)
GPU Clock (Geometric Domain) 570 MHz (original: 470 MHz, overclock: 21%)
GPU Clock (Shader Domain) 549 MHz (original: 450 MHz, overclock: 22%)
GPU Clock (ROP Domain) 549 MHz (original: 450 MHz, overclock: 22%)
Memory Clock 763 MHz (original: 660 MHz, overclock: 16%)
Any idea why my system is reporting some weird temperatures and fan speeds?
Currently it's saying that the CPU temperature is 233 degrees (celcius), the case fan is at ~5000 RPM (runs at 1200 in real life) and CPU Fan (which I don't have, running passively) reports 41 RPM.
The core temperatures are fine, the motherboard temperature is fine...
are you using aisuite/asusprobe for those readings? what happens if you turn on peci in the bios?
i've seen the 41rpm as well. I think it might be poor grounding design by asus. does the case fan read 5000 in a different board?
AI Suite and Everest both. Everest won't even show the CPU temperature if AI Suite says it's high (dunno what's the limit).Quote:
Originally Posted by ziddey
I haven't tried the case fan on another system, but it's a high quality one, shouldn't have any problems reporting the correct readings.
To add more weirdness into all this... the readings are fine for a short while (could be minutes, could be days) after rebooting, but get out of scale afterwards. The readings have been correct for almost a year now and I just one day realized that they're off.
About PECI... no, haven't tried and from what I've read, it's the old, inaccurate way of reporting the readings, so I'd rather not use it.
peci's not the old way
You shouldn't have to enable PECI. If I recall it provides another way for 3rd party tools to get hardware monitoring info. If settings in BIOS are wonky, then that wont help.Quote:
Originally Posted by daimaah
CPU temperature is read from C2D on-chip diode. If I recall correctly, the value you get is how many degrees below threshold you're at. (ie if 85C is max, tell BIOS "-50C" when you're at 35C). There could be some BIOS corruption which is why value is read wrong, or as others have suggested the hardware monitor chip could be malfunctioning (and/or bad contact). Since your fan speed is read unusually high, most likely the hardware monitoring chip is busted. Its not unusual. I've had HW chip (typically Windbond) die unexplicably before.
I've hit a brick wall. :(
http://img440.imageshack.us/img440/1829/limittttoo4.jpg
This is as high as I can get it. If I change the FSB to 334 or more, the machine reboots. :( i've tried raising the vcore, vdimm, and vchip, but it still continues to crash. :( Anything else I can try?
It is just because it's going over 3ghz or something?
Spec:
e4300
asus p5b motherboard
Crucial Ballistix 2GB (2x1GB) DDR2 PC2-5300C3 667MHz
stock cooler (going on water soon)
vcore set to 1.425v in BIOS (I get quite a bit of vdroop)
vdimm 1.9v
vchip 1.45v (max I can set in BIOS)
I forgot to mention, I've got a 40mm fan on the northbridge, and a zalman passive northbridge cooler on the soutchbridge to try and keep everything cool. My SB was getting really roasty before the zalman!
Anyway, I'm gonna try dropping the multi to 6x now and see how much FSB I can get. Orthos blend seems to be doing ok at 334Mhz x 6 right now....
EDIT: Just noticed my LAN port has stopped working now I've start overclocking.... anyone else getting this?
Could be ram, what speed and timings is your ram at? and no my lan port is fine im at FSB 486 MHz.
@timbosan
can you give me the instructions on how what to do with your mod, few posts back. i want to get my Vdimm modded too. TIA.
I tried to explain it in that post. Ok, you must have a digital multi meter, to measure the resistance of the resistor, and to measure the dimm voltage achieved after modding. Dont even try it without one. I covered the resistor i have circled red in my pic with conductive silver & let it dry. This made the resistance 0 ohms to ground. I rubbed the silver back with a toothpick soaked in acetone to remove some of the silver. I stopped when i had a resistance of 517 ohms across the resistor & from leg 6 to ground (was originally 567 ohms). I powered on without ram, and measured the vdimm at the measure points (ground & coil leg) -- pic's of the measure points are either in this thread or the P5B modding thread. When you have the desired voltages, boot up with your ram in & have some fun!Quote:
Originally Posted by eklipze
PS -- If you take it up over 4v vdimm the board will power off then back on then off etc. I think its the OVP kicking in. Funniest thing is i had measured the vdimm as 2.Xv , then booted with an old stick of XMS2 DDR800 in.......the silver dried more, resistance fell, voltage spiked over 4v & the board shut off lol. But the ram is still alive!
Point of this story - Let the silver dry completely before you power on. It would be better to do it properly with a variable resistor. I only did it this way temporarily to see if any gains could be made.
PS -- do this mod at your own risk, i just had to say it.
the e6600 is probably best for you if you can afford to pay that bit more. The e6300 can hit 3GHz + but you need nice ram to go with it. e6320 are nice due to extra cache, but again the ram would probably be your limiter.Quote:
Originally Posted by htredneck
With the 6600 you may hit ~3.6GHz, (9 x 400) and with the ram at 1:1 it would be running at 800 MHz. My 2c.
PS -- Good start with system, try running the ram closer to 1:1 (lower its divider & speed) and wind up the cpu it should do much more than that :)
i just got this mb from a friend v 1.01. my ram is 2.2v so im looking to possibly doing the vdimm mod if i can on this version, so looking for diagrams etc for that. also i have a e6300 on stock cooling running at 7*400 max temp is at 58c. orthos is running now, vcore at 1.3125 wondering what is the max i should put vcore up to on this board w/ the vdroop on stock cooling, aftermarket V1, or just all around number to not go past, or is it all Dependant on temp of cores. thanks for any help.
Hmm, I've set my ram timings really loose - 15-5-5-5Quote:
Originally Posted by Timbosan
I'm gonna stick with 333FSB for now and tighten up my ram timings a little
currently 1hr orthos prime stable with 15-4-4-4-4 Vdimm 2.2v Vfsb1.4 1:1
Does anyone know a good guide on how to tweak mem timings?
I have posted vdimm mod for rev 1.03G in post #551. Look at the same area on your mobo to see if they are the same.Quote:
Originally Posted by nownot
Max vcore is dependent on max core temp, although i dont like exceeding 10% over standard. especially limiting you is the stock cooler.
It depends what IC's your ram uses as to how tight the timings can go. Find that out, and learn what each ram timing setting means. Then just try altering settings until its tweaked nicely. Google ram timing theres some simple timing explanations.Quote:
Originally Posted by MikeHunt79
Thereīs a draw in the place where there should be a capacitor in the middle of the 4 ram banks (2 banks - middle - 2 banks), itīs possible to measure the vdimm there right? I have tried and it works fine there (1.81v here stock bios deafult).
Also, whereīs is that place the pictures show?? I canīt find it it my P5B (this mod works in the P5B Deluxe Wi-Fi right? or is it only for the vanilla???)
vdimm mod area is directly below the ram slots, where the mem power IC and resistors are :)
does it work to the Deluxe Wi-Fi version also???Quote:
Originally Posted by Timbosan
what about my place to measure vdimm??
How do you guys change the vchip, in the bios. I can find it at all. only vmem, vfsb, vcore.
Thanks
what is vchip? never heard that term before. voltage of cpu is vcore. voltage of northbridge is vnb.
yeah do you mean chip as in chipset? If so thats vNB. VMCH is memory controller hub, vICH is southbridge voltage, vFSB is front side bus termination voltage, vdimm is ram voltage. If its not in your bios its not there.Quote:
Originally Posted by elec999
Fcussel - see the thread on the deluxe model to find measure points and volt mods :) This thread's for the vanilla.
ahhh right. I forgot that older revisions didn't have vnb control. you're going to have to do it by pencil mod or pot
Just got my p5b and a e6550, a quick test(with a lousy cooler), 520fsb, and i believe it´s going to go further...i´ll try and post some screenshots once in while...no vmods.
http://s2.simpload.com/th_081446c263080759e.jpg
i´m having a doubt here and maybe some of you can help me, in 3 diferent softwares(speedfan, everest and core temp), i have 3 temps regarding to cpu, one is cpu tem, the other two are core0 and core 1 temps.
In both 3 softwares i get this result while stressing:
cpu:60º
core0:20~22º
core1:20~22º
that´s kinda confusing, which temp is the one i should worry about? cpu(more real to me), or core´s(impossible i think, since ambiente here is at 27º~)
thks in advance.
ps:sorry for my poor english, i´ll try to improve.
if ambient is 27, idle should be ~15 hotter, so about 42*C would be realistic. I think you need to use coretemp 0.95 to correctly read your cpu's Tjunction and give correct temp. Asus probe should give you correct Tcase.
iīll give a look at asus probe, thks for the help :cool:
I just flashed to the newest 1604 bios. It has no other options, and i cannot overclock any further.It states "memory compatability in 1333 fsb is enhanced" so i figured they have made changes to the memory controller operation. Then i figured i'd re-measure my vdimm, just to make sure they didnt alter it.....it was 0.03v lower! I had 2.16v at the coil with 1405 bios, immediately after flash, i get 2.13v! Now my ram is not totally game stable, it crashes out to desktop when going back to the main menu.
Im quite annoyed, i have a fixed resistance vdimm mod in place that gave me + 0.16 - 0.18v, and i dont want to run D9's at 2.2v 24/7, so i will have to re do the mod with a VR now or flash back, but honestly i think there's less chance of me stuffing my board by hard modding it for the second time than by flashing the bios using any asus utility. Cheers for that asus. So anyone thinking of upgrading to new bios -- if you have optimised timings for your ram voltage & youre satisfied, dont upgrade.
i flashed mine to the latest bios ´cause it said in Asus site that in order to support the E6550 it had to be updated...
I´m kinda hitting a wall at 520fsb, but i can´t be sure if it´s due to ram(i´m using 1:1 divider, running ddr2-800@1040, gskill pk) or due to the board, i would like to know if someone have already gone up that fsb value and stood stable(running orthos).
Tks in advance.
Mine is stable at 490, flaky at 495, not anything stable at 500 and wont do more than 520. I dont know if this is due to the board or cpu either. Im only at 1.384v for 490 FSB.....ram is good for 1200 MHz 5-5-5-15 @ 2.1v (tested)........only thing i can think is the board is at its limit. I find it hard to believe ive hit my cpu's FSB wall with only 1.384v, and the ram has much more in it.
Thank you! :up: , i thought maybe i was doing something wrong, now i also believe it´s the mobo wall, even if it is the mobo wall, it´s not bad at all, a board that was designed(was it?) to do 1066 doing almost 2000 stable, can´t say it´s a bad mobo...
I´m also thinking on buying a p5k, maybe closer to christmas(new mobo and low ambient :lol2: ), the perfect combination.
Keep it up!
Mine does 548-550 32M stable, I think more but that is CPU fsb wall. Here is a SS of 530, and can boot at this FSB np.
http://img153.imageshack.us/img153/5484/640032m6ds6.jpg
are you WaterCooling the chipset?
Nope, stock cooling and the 120mm I have over the RAM cools it plenty. Board is full vmod but I only used 1.55 vmch for 550 which is why Im thinking it still has plenty of headroom.
What was its max FSB with stock vMCH? do you run vMCH 1.55v 24/7? What are NB temps like?Quote:
Originally Posted by Eldonko
I had to find out if it was cpu or mobo: :D
I have just completed the vMCH (northbridge) voltage mod for my P5B using a 50K 25-turn VR. Im using the stock NB heatsink with AS5 and a 40mm fan @ 5v.
Intel states 1.375v as an absolute maximum, i am running it at 1.36v. Stock voltage was 1.29v. When benching it is warm to the touch, probably ~30 - 40*C. Im not stable at any higher FSB than i was before. I must be CPU limited.
However, it has allowed me to run static read control on 'faster' (memset says performance level = 10) and remain 100% stable @ 490 FSB. Before the mod it wouldnt even boot with those settings.
This got me about 65 MB/s more bandwidth & 0.6 ns lower ram latency, so ive gained something.
Your ram may be at its limit, it uses promos chips :)Quote:
Originally Posted by vascorama
Quote:
Originally Posted by Eldonko
If you can boot at 530fsb, how are you reaching 548-550? Did they finally find a way to oc this board in Windows? I gave up on mine and stuck it in the kids computer because there was no way to OC in Windows :(
Well I can boot up to 550, but above 540 it seems to only boot properly half the time. Just takes patience, and ya no clockgen is big time PITA.Quote:
Originally Posted by boshuter
IIRC stock vmch was around 500 fsb. I think I was running 1.4vmch for 24/7, higher was not necessary. Remember that vmch is not just for more fsb, it supports memory and video buses, so u need a lil more for other oced components.1.55 was for benching only but I dunno about this intel 1.375 max.. I run some boards to 2.0vmch. :D ;)Quote:
Originally Posted by Timbosan
Sorry for beeing a noob,is that north bridge voltage?Quote:
vMCH
If it is, what´s the 24/7 voltage that you recomend me to set?
I´m using it´s stock cooler and i´ve kept it in auto because i´m not sure what value to put there...
Is there any software that allows me to check it´s temp?
Regards