These pics are from a P5B-E, that's why I posted them to see if the P5D vmods apply to me.Quote:
Originally Posted by wittekakker
Printable View
These pics are from a P5B-E, that's why I posted them to see if the P5D vmods apply to me.Quote:
Originally Posted by wittekakker
It looked like it was P5B Vanilla. Vdimm should work. For Vcore I guess it should work to, maybe you should check out how we found Vcore and Vdroop and see if your board has the same resistance and stuff.
Ok...here is what I got
Strangely, with the bios fsb termination set to auto, 1.2 or 1.4 volts
your 4.13 = 3.63 and 1.35 = 1.23 (both places)
with bios set to 1.3 or 1.45, your 4.13 = 3.8 and 1.35 = 1.34 (both places)
http://rtate123.home.att.net/vmch-r.jpg
In the second picture (below), I listed all the voltages measured on my board.
I circled one pin, where like in the first picture and with the same bios settings, the voltage changes from 3.63 to 3.8
http://rtate123.home.att.net/vmch2-r.jpg
so, it seems theat with auto, 1.2 and 1.4 v I get the lower voltages and with 1.3 and 1.45 I get higher readings.
I tested while in the bios and in windows idling and the readings were the same.
Hope you can figure it out from what I measured
thx persivore
rjw
Can someone check the resistance between the pin measuring 4.42v on the LM324 chip and the pin on the MOSFET above it measuring 4.41v.
Can you also check the resistance between each of the pins I've marked and ground please.
the resistance between the pin measuring 4.42v on the LM324 chip and the pin on the MOSFET above it measuring 4.41v.
995 ohms
the resistance between each of the pins I've marked and ground please.
ON LM324
1.034k left pin
1.024k right pin
Vfsb: Connect a 20k variable resistor between the pin on the left (pin 6) and ground. Decrease resistance to increase voltage.
Check voltage at the MOSFET leg reading 1.35v in post #35
Vmch: Connect a 20k variable resistor between the pin on the right (pin 9) and ground. Decrease resistance to increase voltage.
Check voltage at the leg showing 1.29v on the MOSFET above the LM324 in (post #36)
I'll give it a try right nowQuote:
Originally Posted by persivore
any idea as to what the max voltages could be before KABOOM ? :slobber: :eek: :mad:
and again, thanks so much for the help
rjw
Hi evreyone,
I'm new here need some advise, yesterday assembled system based on P5B + celeron 2.5 Ghz, ddr2 677
I have 2 concirns about it, first tempretue, what is standard one, none O/C with boxed heat sink and fun to be expected?
second before I was using athlonXP 1.533 Ghz on asus a7v33, I don't see much of performance boost, I understend that celeron 2.5 Ghz suck but still shouldn't it outperform athlonXP 1.533 noticeably ?
V.
It will outperform the Atlon, but no big boost. 1533MHz Atlon XP -> 1800+ I guess. Got a 2,5GHz Celeron Prescott here, with a cheap mainbord I got it on 3,2GHz with stock heatsink and stock voltage. Didn't try higher, so maybe there is more left.
I would like to personally give a great BIG thank you to Persivore, who just added the Vfsb and Vmch mods for our board (P5B vanilla)
My setup is now totally stable at over 4.5 Ghz. I included my latest OC effort below. Is this board any good?...check it out
http://rtate123.home.att.net/4641-11062.jpg
Got the vdimm and vdroop done, they worked great. I'll do the vfsb and vmch next.
rjw, Could you please post pics of your vfsb and vmch vmods. I need to know which point to use as ground soldering points. Thanks.
I need to do some work, I will try the mods later. Big thx Persivore!
When I did the Core, droop & dimms mods, I ran 2 4 conductor flat cables to a drive bay, where I had the 3 vr's montd on a board. So I had 2 grounds already.I just ran another 4 wire flat cable and used the grounds that I already ran. Other wise there are plenty of ground points on the MB.Quote:
Originally Posted by nicepun
Good luck
Quote:
Originally Posted by rjw
What voltage you have for the vmch and vfsb?
I've been up and down with them, but to start with, try 1.4Quote:
Originally Posted by nicepun
I've done my highest overclock at 1.55 to 1.65, but it made not difference. Both were stable.
I may have gotten there at 1.4 as well, but haven't had time to check that.
The key with my board is that bios will strangely set both to either 1.2xx or 1.3xx as per one of my previous posts.
auto, 1.2 and 1.4 are at the lower seting, while 1.3 and 1.45 are at higher setting.
So, if you set them to 1.4 to start with, at least they remain stable and at a value just above where the bios would set them.
according to the formula fsb = 166.67 x Vmch + 170, I should need well over 2 volts for 516 FSB, but as I get over 1.6 to 1.7, the NB starts to get a little tepid, plus I saw no difference between 1.55 and 1.7.
I have a copper heatsink and fan on my NB, so while the heat is being removed, I have found that in my case, I seem to be limited by cpu voltage more than NB.
My E6600 is only completely stable at 1.75v or higher (when over 500 fsb)
Also, 1.65v causes the cpu to run hotter,, but then from 1.65 to 1.8, it doen't really change.
I still have a long way to go but there seems to be some oddities once over 500 FSB.
I think that it has to do with the loose timings that are set by the bios.
Once I am in windows, I can use memset to change mem timings drastically, but it won't start windows if you try to tighten them up in the bios.
Which brings up another observation.
when I first started to exceed 500 fsb, I had to set the bios to mem controlled by spd, or (sometimes) no windows. my mem is rated at 5-5-5-15 @ 1064. (Corsair pc8500 dominator) at 2.2volts.
With these settings, I made it to 513 fsb (barely)
lately, I am using 6-6-6 along with loosening all the other timings in the bios and I can boot into windows at over 516.
But then the machine is a dog, even tho cpu is over 4.6 Ghz.
So memset comes in and I can set the timings down to 4's or 5's and things pick up again.
I think that the bios is totally confused at such high fsb and cpu speeds.
At 550 x 7 , it did fine.
Just some observations on my board that may help others
I did the vdimm mod on my P5B-E.
But something seems to be seriously wrong here.
When the board goes into the BIOS vmem starts dropping to ~1.85v, when I reboot after setting up the BIOS vmem drops to 1.20v.
So 2 options:
measuring point is different on P5B-E
vdimm mod is different and I'm overvolting something else
I did it and it worked fine for me? What do you have the vdimm set in bios? I set my to 2.1vdimm before doint the vdimm mod.Quote:
Originally Posted by SMa
I set it auto.Quote:
Originally Posted by nicepun
I'll try 2.1 too.
If 'auto' causes the problem,
then vmch mod doesn't work either?
I have not done the vmch mod yet, I will do it this weekend when I have time.Quote:
Originally Posted by SMa
Sma, before doing the soldering you should have checked out if the readpoint was actually the good one. You can still undo the soldering first, or put your VR on it's maximum value so you can not do any damage. Check the Vdimm with 1,8V and 2,1V set in BIOS and see if the voltage changes on the suggested point.
How I use it: I change Vdimm in BIOS to 2,1V. Then I use the hardmod to give 2,4V. After doing benchmarks and testing I just set my voltage back in BIOS so that I don't have to turn the VR 10 times every time I'll want do benchmark.
Example: 2,1V set in BIOS gives my 2,4V with the hardmod. If I switch to 1,8V in BIOS I get actually 2,1V which is a safe value for my memory.
This is exactly what I did, except I went up to 2.5v, I'm thinking about doing 2.6v just in case I want to do some benching/testing.Quote:
Originally Posted by wittekakker
[QUOTE=
How I use it: I change Vdimm in BIOS to 2,1V. Then I use the hardmod to give 2,4V. After doing benchmarks and testing I just set my voltage back in BIOS so that I don't have to turn the VR 10 times every time I'll want do benchmark.
Example: 2,1V set in BIOS gives my 2,4V with the hardmod. If I switch to 1,8V in BIOS I get actually 2,1V which is a safe value for my memory.[/QUOTE]
I agree
Also, never use auto. on my board, in auto, the bios or mb tries to lower the voltage, so you are fighting the bios.
has anyone else tried Vmch.
It stabilized my board, but even at 1.7v I could't get higher fsb. Somewhere around 1.75 or 1.8. the board won't boot.
@ nicepun
Any chance you post some pics of your system with the mods done?
Tks:toast:
rjw, So you would say that the mvch and vfsb is not necessary?
I haven't seen any gains from pushing them to the limit.Quote:
Originally Posted by nicepun
I have been to 9 x 520 with 1.5 to 1.75v on both, but with the mods, it was solid. without, voltages never got close and stability was questionable
I've been playing with a few other asus boards as well
p5b deluxe
p5wdh deluxe
p5wdg2 ws pro
all have vmods, and while I need to do more testing, the p5b and p5b deluxe are the easiest (so far) to get to over 500 fsb.
as someone stated in another post, the 965 chip tries to start windows and will crash later, while if the 975 chip isn't happy, windows will be no show.
on another note, I haven't been able to get my ex 6800 up as high as my e6600, as of yet.
If I needed a chip today, I would probably look into the E6700
once again, the jury is still out on the other boards and chip, till more testing can be done
that's just my experience so far
If I place 20k resistor for Vdimm, how many voltage will I get?
http://img75.imageshack.us/my.php?image=vdimmmodyh4.jpg
Any word on this?Quote:
Originally Posted by wittekakker
I have just done the vdroop mod with a straight 56kohm resistor and it has resulted in it overvolting which I would be happy with even though it still droops. The main problem I'm having is it won't let me boot into windows with any reasonable overclock (It resets as soon as it starts to load) I can only get 21x140fsb@1.525v(set in bios) 1.625v(idle) 1.58v(load) out of my 511J which is 21x133fsb stock where as before it was hitting 21x191 @ 1.7v (set in bios) 1.58v(idle) 1.48v(load). Anyone else experience similar or know of a solution to my problem?
Thanks for any help and great work wittekakker persivore and all involved :toast:.
A fixed resistor won't cut it . Get a 50K vr and set it to its maximum value of 50K then lower the value to find the right balance. It will take a little time to adjust . I set my voltage to 1.6 in the bios and lowered the resistance until I hit a 1.6v reading from the motherboard chip. I'm sure others have their opinion on where to set the voltage at but this worked well for me as I am now sitting at 1.59 in windows and 1.61 under loadQuote:
Originally Posted by melymel2789
I have question: when i make this vdimm mod, what happens with voltages in bios, are they changed or I have to messure with multimeter?
Read Vdimm with a multimeter. The BIOS only has an option to SET Vdimm, not to READ Vdimm.
hallo again, one more about this vdimm mod: on what value I need to set 20k pot before starting up mbo?
20k for start, lower to ingrease voltage. I hope for you 20k is not to much voltage yet for your memory.
gonna try out the vdimm mod tomorrow, 2.1 is too low and i just measured the actual reading with a dmm and it reads 2.02 :(
so things to get are a couple of wires, a 20k VR and some time and steady hands heh
thanks all for the heads up
I`ll buy crucial ballistix this week, and I need at least 2.2V for it, probably and more at 1000+MhzQuote:
Originally Posted by wittekakker
I have a P5B and a 5K VR. What kind of voltages am I looking at after I do this mod (or is 5K not enough... I have 10K and 20K as well)?
EDIT: Does this look ok?
Dswarp:
I think the voltage will be quite high with a 5k vr. Set the bios voltage to 1,8 volts and the VR to 5k and the vdimm should be at about 2,3-2,5v i'd guess.
If you have more 5k vr's lying arround you could always have two in a serial connection = 10k
I actually eneded up finding a 10K resistor and used that.Quote:
Originally Posted by Orrefan
I have another question about the VDroop mod. The highest VR I have is a 20K, and I know the mod calls for a 50K. Could I put a 30K Fixed resistor in serial with the 20K VR? I assume that would work correct?
So, I've managed to do the Vdimm mod, it all worked just fine... But I sniffed around in this thread after the VMCH mod, and I saw something, but I never got it quite straight, does anyone have a clear pic that tells me which points to connect?
It'd be very much appreciated, I'm more or less stuck at 450FSB stable with this piece of junk...
well i have just bought all the bits to do the mods and thought i would check the voltages at all the different places before i mod my board to find out whats what.
on no36 i get 1.26 not 1.28 so im defo a bit low on the mch.
then i ran across a problem when i try to measure the voltage between the two 1.35v i get 0v?? am i supposed to test those two points together for vfsb or do i need to check one of them with my black multimeter wire on a ground.
Sorry to bother you chaps but the result of 0v is puzzling me??!!!.
i look forward to a reply so i can find out my readings properly but if im supposed to measure the voltage between those 2 points and im measuring it right then why is my vfsb 0??
thanks
mike
On the points we meassured 1.35V we put one cable of our Vmeter on that point and the other cable to ground. I've you put your second cable not on ground but on the other point where you meassure 1.35V, then it's obvious you see 0V on your Vmeter.
ah good i thought when i got 0 v i had done it wrong so ill remeasure it with black probe on a ground, thanks for clearing up my confusion.
thanks
mike
1.32 where it says 1.35 so i shall defo be modding this board with all the mods shortly as i have serious vdroop , my bios is at 1.4125 and its getting 1.33 in windows and drops to 1.32 under 50% load and 1.30 at 100% load.
im gonna go to maplins and get all the bits for the mods and get this board sorted.
what sort of volt should i set vmch too ? say 1.4v ??
thanks
mike
Depending on how extreme you wanna go.
Could you specify that a bit more, please? I can't find any pin 6 on the pic in post 35 and I don't understand where the pin 9 is either.Quote:
Originally Posted by persivore
The pin numbers were with reference to post #104. Post #35/36 were just to show the read points.Quote:
Originally Posted by eyvind
So it will be like this? I borrowed the image, I hope that's cool. And it is OK to connect for example both of these mods to the same ground connection?
Vfsb is fine, but Vmch should be on the pin thats marked green. Its fine to use the same ground for both mods :)Quote:
Originally Posted by eyvind
And which of these(red lines) is the correct measuring point for Vmch? Ground is the one which is not white, is that correct? I'm sorry that I have to ask that much, but thanks for help mate!
It should be between the MOSFET leg marked as 1.29v and the un-shaded (non-white) point (ground)Quote:
Originally Posted by eyvind
Hi,
first off, this thread has been very interesting. I've been a modder/oc'er for several years, basically using PCs for 15 years and other computers since the early 80s. Just meaning to say I'm not your average annoying noob. ;)
Okay, here comes my problem: I purchased the P5B vanilla last week but I cannot get past FSB 400 or rather 405....My board came with BIOS 0211 and chipset revision C1, so it has probably been catching dust on the shelf for months.
system config:
ASUS P5B vanilla
Enermax Liberty 400W PSU, with independant 12V rails. 20A each, combined power max. 360W on both.
Core 2 Duo E6300 at 2800 MHz/1.4000V
BIOS 0806 currently
Gigabyte GF 7800GT/256 MB GPU
G.Skill F2-6400PHU2-1GBNR RAM (rated at 5-5-5-15)
Audigy 2 ZS soundcard
Intel PRO/1000MT GBit LAN card
SATA 1: Toshiba SD-M 1712 DVD ROM with SATA to IDE adapter.
SATA 2: LG DVD-R 4167 burner with SATA to IDE adapter
SATA 3: WDC 2500KS 250GB drive
SATA 4: WDC 1600JD 160GB drive
Here is what I have tested so far:
I've pushed the RAM to the limits at lower CPU clocks. As a result the RAM worked stable up to DDR950. Beyond that I noticed memory errors at the upper end of the 1 GB range during memtest86 test 5. Raising the voltage through the vmod to 2.4V or 2.25V did not change that. So I am back at stock voltage.
Current config: 2.0V, 5-5-5-15-6-35-12-12-12-12, FSB: 400, ratio 1:1
The default -15-5-10-10-10-10 causes errors in memtest.
The CPU: The system did not get to the BIOS screen beyond 405 MHz FSB. No matter if the multiplier was set to 6 or 7 (2400 or 2800 MHz). So I guess it isn't the CPU either that limits the OCing.
Mods: vdrop, 10k resistor. This gets the voltages to reflect the real setting int he BIOS. No more dropping, no more guessing.
vmch, 12k resistor. 1.433V on the chipset.
I used a 4 1/2 digit digital multimeter (app. 0.05% error margin at 2V DC)
1.) Any idea what's wrong? The E6300 should overclock beyond 3.2 GHz usually.
2.) What experiences do you folks have regarding using four 512 MB DIMMs? Does it degrade overclockability? I'd hate to drop to DDR2-667 FSB to RAM ratio...
3.) Did you ever notice in the ASUS PC Probe 2...in the DMI infos...there is a info field in the "Processor information (Type 4)": Max Speed: 3800 Mhz ?
What does this insinuate? Is this being read from the CPU itself, and Intel allows overclocking secretly?...
I just thought I should bring that up.
4.) SATA controller in AHCI mode (chipset, not JMicro controller). What sense does it make to have the device names in the BIOS and F8-bootmenu to be garbled? The letters look like you dropped some scrabble tiles on a table. (I can provide screenshots)
5) Drivers for the onboard HD audio. It appears that in Win2003 Server there is no Soundmax control panel/mixer being installed, despite being dedicated Win2003 installer files from the ASUS website. Any solutions? The installer package is more than 5 MB big, should be enough to contain one.
Any advice is welcome, however, the overclocking is my main concern.
Fire away. :)
Little article: Modding the P5B
http://www.wittekakker.be/projects/p5b/index.html
It's in dutch, anyway, you will understand what's on the pictures.
wittekakker: The only real difference that I can see between your system and mine is the Arctic Silver under the MCH and ICH's heatsinks. How much of a difference did that make overclocking wise in your case?
I might do that too in the next few days. Got AS5 here and a Thermaltake Sonictower as CPU cooler, and a small fan mounted on the NB because the sonictower's airstream goes horizontally. not vertically towards the board.
Anyway, a good summary on your page.
can someone please post pictures of how-to do the p5b vanilla vmch and vfsb mods please??!@ :confused:
I don't know, I sold my memory, my new memory is allready back from where it came, goddamm RMA takes such a long time :( I just hate it to wait, and wait and wait...Quote:
Originally Posted by Amurtigress
can someone please do some reading... I posted pictures 2 posts above your post.Quote:
Originally Posted by messerchmidt
sorry missed that. this is vmch
Attachment 53582
which one is vfsb or is this the only other mod i need to do?
this website can translate it fairly well! :woot:Quote:
Originally Posted by wittekakker
http://www.freetranslation.com/web.htm
Hello, First post here.
I got an Asus p5b and its stable @ 3.6ghz 450fsb. My ram is capable of 500fsb @ 2.3v so i guess ill need to do this mod. My question is can i just use a resistor to have a fixed voltage. Say i put the voltage to 1.8v or w/e the lowest voltage is and have a resistor that gives me +0.1v. From their id just up the voltage from 1.8v + 0.1 to 1.9v + 0.1v or have a diff resistor to give me a diff value.
If anyone could help that would be great.
This is all regarding the Memory voltage. Max i can pump is 2.1 and i need more but using some resistors rather then a trimmer pot.:slap:
echo...:slapass:
Just get a trimmer will ya.
well, if i knew some values then id be able to do it myself but...
10k trimmer pot fine? i got one which i need to test... It isnt the long blue ones but its a multy turn 10 k trimmer pot.
Watch my site, you can find the info their aswell. 50k VR is the best option.
It doesn't has to be multiturn, it's just more safe and more correct then one-turn VR's.
ok, modding in progress. How would i be able to read what voltages im pumping to my ram? :stick:
Dude, are you for real?
You lack any knowledge about Vmodding, just don't kill yourself today will ya.
see, soldering aint the problem...I can probably figure it out. But the fact that you just say that and don't give me the answer is just gay. Like what was the point of that post?
You think ur so high and mighty?
So if your gonna help anyone then do so but don't flame someone for 1 question that you probably though off when you started out.
Sorry it was a stupied question but i just like 2 double check things.
I've put effort in the stuff I've posted here, and also on the internet page I made espacially for all modders around here, but with questions like "how can I read voltage" you are at the wrong place. It's the very basic of Vmodding and shouldn't be questioned here. Plus, you were almost soldering it all up without knowing how to use it... like wtf.
Now consider yourself lucky, cause, you can read voltage like this:
take your voltmeter.
Turn it to 20VDC.
Connect to black wire to any ground. Your PSU molex connector has 2 ground wires (black also, who thought).
Connect the red wire to the VDIMM readpoint I show you on my site.
Now carfully watch the LCD, there might happen something.
Thanks, you could have said that in the first post.
ohh and btw i know how to use a dvm, all i needed was the point where i could check the voltage.
Found it on ur site.
Thanks
well, ive done the VDIMM mod @ 2.35v
to tell you the truth im still stuck @ 3.6ghz 450 fsb, 4-4-4-9 timing.
boots at 480fsb and can run pi, but stability wise its horrible.
Will the mod for the voltage drop and the vmch help it out?
seeing that i put in my bios 1.7volts and that under load it getting to 1.5volts..
Ok guys, thinking about the vdimm mod first.
If I set in BIOS 1.8V (Corsair XMS2 2x 1GB 800MHz, CL5, stuck at 3.2GHz with E6300) and place a 10k or a 20k resistor, how much voltage will I get?
Simple question guys, please answer.
Is it safe to keep ram at 2.3V 12hours a day?
Thank You for the answers.
mines rated @ 2.35v so id assume so :)
Just do the mod and boot to bios with the trimpot at max resistance then measure with dmm. Shouldn’t be hi at all if you start at max and move down from there. Its also a good idea to pre test the trimpot for how touchy it is with ohm meter.
2.3 should be ok for 24/7 ya
Very depending on what RAM you have, some can't take anything above 2.1V
Thanks guys for the answers :)
Ahh, I have a 10k,20k and a 50k resistor. Which one should I use?
This one says 10k:
http://img139.imageshack.us/img139/6966/vdimmp5bke9.jpg
This one says 20k:
http://img139.imageshack.us/img139/2...mmodyh4ab5.jpg
Edit: Ok, I read now the whole thread like 4 times :) I'll place a 20k resistor. So:
1. Turn off pc with 3.2GHz overclock, and before that the Vdimm set to 1,8v ?
2. Apply the mod, turn on the pc, check how much voltage I get with the mod.
3. If the mem after 1.8 BIOS -->2,1V real, I increase the BIOS voltage, right? Am I getting this?
Please read the last part guys
Use a 10k resistor for the vdimm. that will make the voltage at in the bios = what the ram is actually getting +/1 ~.005volts.
With a 20k resistor you will still be undervolting.
The lower the resistance, the more power it will be getting. So if you want to go above 2.1v - use a POT and go a bit below 10k resistance and measure as you twist.
do the other mods too for vfsb/vmch/vcpu/vdrop to get a perfectly stable OC. I had to do all of them, used resistors for all, not POTs.
Could someone PLEASE tell me if there's a way to MOD VDIMM without loosing a warranty?
I've asked a few people - ideas: ground could be taken from a screw mounting the mobo, soldering on top of the leg, or using some clips - like those found in car's accumulators but of course smaller. No more ideas and I don't know if it'll work.
I'm sorry if it was already said in this thread. but I've got mobo and CPU for 3 days, and for next 2-6 days they will be still just getting dust -caused by extreme lack of time :( so forgive me for not searching. real no time here.
Thanx
Guys,
I plan to do the vdroop and vdimm mods to my p5b vannilla but I only have two 50k vr's to work with. That's fine for the vdroop which specifies a 50k vr but a 10 vr is recommended for the vdimm mod.
My question is can I use a 50k vr for the vdimm mod and how would I set this up?
I'm guessing that if I set the resistance to 50k this will seriously undervolt my mem and possibly lead to my pc not booting? So if this is the case can I set my 50k vr to 10k resistance before doing the mod and adjust down from there checking the volts with a dmm as I go?
Any help is much appreciated.
evil
50k is fine for vdimm mod, that's what I use, you will just max out at about 2.5-2.6v. A 10k just allows alot more voltage. When you add the trimpot, turn resistance to 50k the first time you boot and adjust from there. I found that 50k resistance gave me about 2.0v IIRC. I use an old 512 stick of ram for booting the first time when i do vmods so my expensive kits dont get fried if anything goes wrong. Might wanna do that too if you can. ;)Quote:
Originally Posted by evil_twin
@ Beton - Sorry man, vmods void warranty, no way around it.
Many thanks Eldonko,
That's what makes these forums great. I don't post much because most of the answers are there already but when you need assistance there is always someone who will take time out to help.
Happy New Year all.
evil
Just did a Vdimm mod with a 20k VR, works like a charm :D
gonna do vdroop and vmch mods next
I did the VDimm the VMCH and the VDrop mod. The vdimm and the vmch worked great and was able to OC my fsb to 515 stable from 450. The vdrop was also good as under load (1.7v in bios) went to 1.5v in windows which runs now at 1.6v in bios to 1.6v in windows. The thing is if i give it more like 1.65v in the bios im only getting about 1.6v in windows.
Any suggestions?
Hi guys, :toast:
any of you got a mouser part # for these trimmer? are bourns 3296 any good? i might have a few left from a power supply mod but i wont waste time searching for it :D are these any good?
:
http://www.mouser.com/search/Product...-3296W-1-503LF
thanks
edit: reading the datasheet told me everything I had to know. Ordered a bunch of 10/20/50K Ohm . :)
Help needed!
Yesterday a did the vdimm an vdroop mod and during the vdroop doing I killed the smd part /near the ADP3198/
On the attached jpg it is signed R3. This is actually not a SMD resistor it is a SMD capacitor.
I can't to use the damaged one. Possible to change it, but I dont know its real value.
If should be someone who knows the correct value /volts, capacity/ pls send it me in email. Thx in advance!
http://kepfeltoltes.hu/view/070108/v...toltes.hu_.jpg
Quote:
Originally Posted by bull pull
I used cermet trimmers. Its power is 0,5W too. I think yours choice will be good.
i didn't got any measure on the vdimm read....someone have a clue??
(EDIT)forget it...just toutchy to touch the spot
Did the Vdimm mod (again), now I can get about 2.3V easily.
Now I'm ready for the VFSB, so before the mod, I have to set the VFSB to the lowest in BIOS, right?
What does MCH do? Is it chipset's voltage? Or southbrige's?
NoRogeR How much FSB gain you have since you've done the Vdimm mod? How much voltage you've set in BIOS to reach 3,2GHz?
MCH = Northbridge, ICH = Southbridge
460FSB before Vdimm mod (stable), 470FSB after vdimm stable, 480FSB no boot.
You mean Vcore or Vdimm? Vcore: 1,4V, Vdimm: 2,1VQuote:
Originally Posted by Vivio
wow, now Im really confused. If MCH is northbridge, so whats VFSB? To what part I will increase voltage?Quote:
Originally Posted by Vivio
bump
FSB = Fronst Side Bus. Now guess what VFSB is.
Just a quick note to say thankyou to all the info that has been posted here you guys are very knowledgable it still amazes me that if there a way you usually find it! anyway here is what my P5B did after your mods:)
http://img.photobucket.com/albums/v7...w/sub11sec.jpg
will try 32mpi later
Nice one ;)
4,7GHz with only 1,138V? Cool!
What memory and how much voltage you've set for them. And of course if you can provide the rest of the parameters.
Water cooling?
cpuz doesnt report vcore correctly, and 4.7g takes alot more vcore than that no matter what the cooling. :)
I wish 1.138, Its at 1.74v on phase cooling GSKILL HZ's 6400Quote:
Originally Posted by Vivio
i recently purchased a p5b-e. can somebody confirm that these mods work for my mobo? are there any pencil mods?
Anyone have any information on the neighboring resistors? I'm expecting a p5b soon and am looking into pencil mods to raise to static amount. If it's not known yet, could someone provide background on understanding how to follow the neighboring resistors to determine what I might need to trial and error?
All I'm trying to aim for is this:
I figure since in bios, there's control for vdimm +0.3v over 1.8v for 2.1v, if I shade a resistor such that the baseline becomes 2.1v, I'd be happy with it.
As for vdroop, it looks like I could just shade until the desired resistance is measured across, and it should be eliminated, just the same, correct?
Same question applies for vmch. I'm imagining that 1.55v vmch should be sufficient for getting up to 500fsb sanely? And I understand new bios allows vfsb up to 1.45v anyway, so it should be fine there I'd imagine?
Can't wait to jump ship from ds3.
edit: Also, any ballpark resistance I'd want to aim for for the vdroop mod that seems to be most on target in terms of removing droop and maintaining set vcore?
Just wanted to post an update now that I have the board. My p5b vanilla came with the ability to scale vdimm up to 2.45v!! Guess this means no vdimm mod needed for me :). Droop and drop is horrid though. 1.40v set results in 1.35v idle and 1.30v load. Good lord. Then again, the ds3 I had wasn't too much better. 1.375v set results in 1.328v idle and 1.296-312v load.
edit: damn. looks like any setting above 2.1v in bios is not real. I'll post back when I get a new battery for my dmm, but it might be going back to 1.8v or something.