A question to G31M-ES2L users.

lardfest · Post by **lardfest** » Tue Jun 22, 2010 4:20 am

Does the bios allows undervolting of memory voltage?

yuu · Post by **yuu** » Fri Jun 25, 2010 12:01 pm

No (it is 1.9 by default)

2x2GB A-DATA 800 1:1 IBT
1.60 138W
1.70 139W
1.80 140W
1.90 141W
2.00 142W
2.10 143W
2.20 144W
2.30 145W

b_rubenstein · Post by **b_rubenstein** » Sat Jun 26, 2010 10:45 am

yuu wrote:No (it is 1.9 by default)

That's with the voltage set to [Auto]. If the SPD value is 1.8v ad the voltage is set to [Normal] it will receive 1.8v. the Auto setting Gigabyte BIOS' will almost always set the voltage higher than nominal.

yuu · Post by **yuu** » Sat Jun 26, 2010 10:57 am

The "Normal" Also sets the 1.9V, in fact if you leave your voltage to Normal. you receive a big bump when overclocking. at 350Mhz it is 1.3V on MCH., and 1.4V on 400Mhz or something like that, and memory could go to 2.0V probably that way. Unless they fixed with some of the latest bioses.

The new P45 series do the opposite, Normal means that voltage doesn't budge from default no matter what.

b_rubenstein · Post by **b_rubenstein** » Sat Jun 26, 2010 7:09 pm

yuu wrote: The new P45 series do the opposite, Normal means that voltage doesn't budge from default no matter what.

The behavior describing the P45 I have also observed on the following Gigabyte boards here in my house:

- GA-EP35-DS3R
- GA-EP35-DS3L
- GA-EP45-UD3L
- GA-G41M-ES2L

With voltage set to [Normal] the voltage is lower at stock speeds and doesn't rise when OC'd.

line · Post by **line** » Sun Jun 27, 2010 2:06 pm

I don't think Gigabyte's G31 boards ever go under 1.9V. My choice today would be the GA-EG41MF-US2H because it's their best build with regard to layout and features. This board can run the memory at standard voltage (under 1.9V anyway) if you set the voltage to Normal.

At the same time, I also advise against getting a Gigabyte G31 board because of a prevalent DPC latency issue that can give you audio glitches. You won't notice it under XP unless you use the "notebook" power profile, but if you install Windows 7 the issue will surface. There are two ways to work around it: either tweak the power profile to use more power (go to the advanced power settings and change minimum CPU duty cycle from 0% to 100%), or go to BIOS and disable one of the CPU power saving features.