Tom's Hardware > Forum > Overclocking > General Discussions > [Solved] Help with vdroop on Gigabyte GA-P35C-DS3R

[Solved] Help with vdroop on Gigabyte GA-P35C-DS3R

Forum Overclocking : General Discussions - [Solved] Help with vdroop on Gigabyte GA-P35C-DS3R

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henrystrawn   10-23-2009 at 10:40:08 AM

After getting assistance from the community about my first OC. Computronix pointed out a major vdroop. Since my BIOS has no line calibration, do I just live with it, or compensate for it with cpu voltage?

E6850 @3.60 (400x9)
BIOS ADJ: DDR voltage +.3, FSB voltage +.1, CPU voltage 1.4125


http://i634.photobucket.com/albums/uu70/henrystrawn/speedfanvoltchart.png

Here is a screen shot of what's goin' on. I started/stopped/started a blend test of Prime 95, to show all fluctuation in Vcore. I have followed Computronix advice, and revisited his 'sticky" on Temperature. I just gave Speed Fan another shot, I haven't set the warning and fan parameters yet. I want to make sure Vista plays nice, first. I can't wait for my windows 7 upgrade to get here. Any suggestion you'll have would be wonderful while I do some reading. Thanx again to all for the help with the overclock.

henrystrawn


Message edited by henrystrawn on 10-23-2009 at 11:18:34 AM
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Best answer from CompuTronix
henrystrawn,

I see you followed my recommendations. The GA-P35-xxxx Vdroop is quite a mess :pfff: when visualized graphically, thanks to SpeedFan's Charts. In this particular instance, I see 1.344 to 1.376, which is 32 millivolts; not good, but not despicable. If you're not comfortable performing the pencil mod, then it's OK to just live with it.

As I mentioned in your previous thread, each downward spike is a potential BSOD crash point. Consequently, sloppy Vcore regulation requires higher settings to maintain stability, while tight Vcore regulation allows lower settings, and thus, lower temperatures.

Also, since you're now running the memory at stock clock, you can probably dispense with the DDR +.3, and as the P35 northbridge chipset isn't at all stressed at 400 Mhz, you can also probably dispense with the FSB +.1.

Comp :sol:
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knotknut   10-23-2009 at 06:11:35 PM

Pencil Mod USE AT YOUR OWN RISK

http://www.overclock.net/intel-mot [...] hread.html


Message edited by knotknut on 10-23-2009 at 06:35:35 PM
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CompuTronix   10-23-2009 at 06:57:53 PM
Best answer

henrystrawn,

I see you followed my recommendations. The GA-P35-xxxx Vdroop is quite a mess :pfff: when visualized graphically, thanks to SpeedFan's Charts. In this particular instance, I see 1.344 to 1.376, which is 32 millivolts; not good, but not despicable. If you're not comfortable performing the pencil mod, then it's OK to just live with it.

As I mentioned in your previous thread, each downward spike is a potential BSOD crash point. Consequently, sloppy Vcore regulation requires higher settings to maintain stability, while tight Vcore regulation allows lower settings, and thus, lower temperatures.

Also, since you're now running the memory at stock clock, you can probably dispense with the DDR +.3, and as the P35 northbridge chipset isn't at all stressed at 400 Mhz, you can also probably dispense with the FSB +.1.

Comp :sol:


Message edited by CompuTronix on 10-23-2009 at 07:00:41 PM
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knotknut   10-23-2009 at 07:25:56 PM

Scrol down to MON's post....edit; its MUN

http://www.overclock.net/motherboa [...] encil.html


Message edited by knotknut on 10-23-2009 at 07:27:18 PM
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henrystrawn   10-23-2009 at 08:09:46 PM

Thanx guys! I actually caught the DS3 vs DS3R layout when I followed the first link. I backed off my DDR to +2, this ram is rated at 2.0-2.1v. Am I correct in manually forcing the voltage? My timing goes to 5-5-5-15 on "auto" and I manual set to 4-4-4-12. Running '95' blend test now. I set the FSB voltage to normal. My only concern is forcing 1.38 vcore at idle, and not really needing it until load. Is the extra "pressure" at 8W consumption really going to have adverse physical effects to the PCB over the next year? Hmmm? There's one way to find out. I am happy with the settings. I think I am done. Thanks for the advice on the unneeded increase in voltage.


Message edited by henrystrawn on 10-23-2009 at 08:12:16 PM
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CompuTronix   10-23-2009 at 08:14:08 PM

Glad we could help. Enjoy your rig! :sol:

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CompuTronix   10-23-2009 at 08:42:47 PM

Well, alrighty then! :D Whoopty doo! :bounce: Tell you what I'll do for you; being the really nice guy that I am, I'll just go ahead and have numerous beers for you ... in rapid succession! :pt1cable:

Message quoted 1 times
Message edited by CompuTronix on 10-23-2009 at 08:46:43 PM
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henrystrawn   10-24-2009 at 12:54:08 AM

I was so confident in the overclock that you guys helped me with that I did an "upgrade in place", without reseting to defaults. Not a single hitch. Now that is confidence! Thanks again to all, couldn't have done it without you. I know that I "should" do a fresh install, by most opinions, but I can do that at a later time, I just have too much stuff loaded on this machine. Computronix thanks again for the guiding hand.

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knotknut   10-24-2009 at 01:05:57 AM

CompuTronix wrote :

Well, alrighty then! :D Whoopty doo! :bounce: Tell you what I'll do for you; being the really nice guy that I am, I'll just go ahead and have numerous beers for you ... in rapid succession! :pt1cable:





I'll drink to that

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one-shot   10-24-2009 at 03:20:14 AM

I did the volt mod on my old P35-DS3L. It worked great. There wasn't any Vdroop on my overclocked E6750. However, you should have a little Vdroop. So if you're brave enough, get out the ohm meter, the pencil and go to work. I think I penciled down to around 1K Ohms.

------------------------------ Antec P182, i7 920 3.7Ghz @ 1.3V, Xigmatek 1283, Asus P6T X58, 3 x 2048MB OCZ Plat DDR3 1600 RAM, 2 EVGA GTX260 Core 216 in SLI, WD 160gb,320GB 1TB WD Black. Corsair 750TX. Acer 24" Monitor. Vista x64 Home Premium.
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