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Ok, I've tested this myself and its working fine.
Changed the resistor value to 1580 Ohms.
Before VDROOP:
BIOS 1.5250V - IDLE 1.5V - LOAD 1.39-1.4V
Q6600 3.6Ghz Unstable and hot :down:
After VDROOP:
BIOS 1.4875V - IDLE 1.45V - LOAD 1.41-1.42V
Q6600 3.6Ghz Orthos Stable :up: :up:
The vDroop is still there with 1.58K Ohm but it's much better! Maybe lower resistance would help, but a little vDroop is fine for me :yepp:
Nice work, I will try here, but there's not a pencil mod that get totally rid of vdrop?
The oscilations on vcore is insane in this motherboard!
I have to set 1.52v on bios to get the minimum 1.46v needed to stabilize my q6600 on 3600mhz (400x9)
Nope, the oscilation is still there :mad:
If you go below 1580 Ohms the vDroop will be lower, in theory. But I don't know how much is safe.
I will try 1400 Ohms this weekend.
Hi Andi64, i have ordered this board and will arrive next week. Ive read somewhere that doing a hard mod on vdroop is more stable, so what vr do you think should be used, 5k ohm? thanks, will anxiously wait for your tests on this mod:) .
Hi!
I think a 5K Ohm VR will do the job, it will give you about 1450 Ohms, tune down to 4K and you will have 1350 Ohms.
I think that with 1300-1200 ohm the vDroop will be near zero (+-0.02 from selected voltage because of the fluctuation :( ) but this is just guessing, I will test at night.
I'm at work right now... sorry for my English, I'm sleepy :p:
Thanks Andi64 will try it on my board, this is my first msi board coming from mostly asus boards the king of vdroop as oskar wu of dfi puts it, i got used to soldering vr's to lessen the vdroop;) .
i'll buy this board.... i'll test on e6750...
I tried here but I don't see any effect, the Vdrop is still the same.
Also with 1.6 bios de fluctuation is more present than 1.1 bios...
I think I will be back to my P5k deluxe...
Hi guys
I need pencil vmch mod for MSI P35 Neo2 FR
Any help or links would be of great help.
Tried it with a pencil, and then with 50k and 10K resistors but it doesn't work on P35D3 (same IC). :)
I've made the Vmch mod. I'll post it. I guess it'll work on other MSI P35 as well.
any updates on this? the v-droop is driving me nuts. currently doing 1.45 vcore for just 3330mhz on my allendale. @ 1.4385 computer will run for over a day, but it has blue screened since vdroop under load has hit 1.37. so far this bluescreen junked my 88% WU:down: testing it with 1.45 to see if it claims another one:sofa:
I just set the voltage in the BIOS to be stable under load factoring in the droop. I currently have my E8400 in the socket, 1.40 set in BIOS, 1.39v idle and 1.37v under 100% load at 4GHz. Considering how the chip never idles, it'll constantly be fed 1.37v. Just part of tweaking the board I suppose, especially during benching :shrug:
well, it seems the board is doing its job, i'm just dissapointed in my 4400's poor overclockability. guess i shouldnt complain though, its was a pretty decent chip for $120 at the time
btw: is there a problem with using live update on vista64? i noticed it would fail to check bios under mobo. i dont want to d/l the update and find out vista64 is responsible for trashing my bios
Are you guys going from Speedfan when reading voltage or from a DMM?
unfortunately, yes. that is the only way i can measure right now. though according to some users, the 1.6 bios is more or less accurate in terms of voltage reading when compared to a voltmeter
Cause with the 1.51 BIOS my Neo2-FR is flashed with, the mosfets around the CPU socket read 1.62v idle and 1.613v running OCCT when I have 1.625v selected in BIOS.
So I'm really hoping that I'm reading CPU vCore and not some other voltage that is scaling with what I select vCore as.
It might be right Dragon Orta. With my E2180 on a Neo2-FR, I've got 1.325 V set in the BIOS at 10x260 but Everest and SpeedFan read 1.36V idle 1.34V load (w/o pencil vdroop mod). I guess my board's vdroop isn't too bad. I'll keep this thread posted as I near 3GHz.
hey andi where did you get this info, and how has it been treating you. Any more info since the last post? I would like to vdroop mod my neo2 also.
for me vdroop is a round 0.2 until i start using higher voltages of 1.4 and above, the vdroop increases quite a bit :/Quote:
Originally Posted by 40sTheme
ok, i found the chip in the picture. It is inbetween the cpu-fan
connector and the first ram slot, that resistor is SO small!
Which revision of the board do you guys own ? 1.1 or 1.2 ?
Considering my vdroop isn't bad at all, absolutely normal I would say, it comes to question whether the pcb revision had/has any effect on that...
Unfortunately I have no clue what changes have been made between the 2 revisions ^^ so just a thought! :)
I have rev 1.2 and my Vdroop is 0.04v. I think I'll try this mod today.
thanks alot
very useful mod
is there're any relations with undervolt ..
i need pics of an undervolt p35 platinum ...
Where does one measure the vcore on this board?
I just measured from the coils around the CPU socket (IIRC)