Memory Voltage Adjustment

According to some websites, like www.motherboards.org and www.ocworkbench.com, it is not possible to adjust voltage settings for the memory on the Asus A7V333. This is indeed not the case, as I will show you in the following article.

First, read what they have to say:

http://www.motherboards.org

"I was also very disappointed that the board did not offer settings options for increasing the memory or AGP voltage. This can be a limiting factor when it comes to high FSB overclocking as increasing the voltage makes for a more stable environment."

http://www.ocworkbench.com

"Cons: No AGP, DDR voltages adjustments"

I can't really blame them, as Asus' own site doesn't mention this option at all, and the manual doesn't either. However, it is quite possible to adjust DDR voltage settings on this board using jumpers. First, locate the jumpers placed just left of the AGP port. There should be two of them next to each other.

From the overview picture (From the ASUS website) you can see where the jumpers are located:

And on this closeup:

Settings are as follows:

Setting 1:		~ 2.61 volts
Setting 2:		~ 2.81 volts
Setting 3:		~ 2.93 volts
Setting 4:		~ 3.02 volts

You can adjust these as you please, but beware: high voltage can kill your memory module(s)! My A7V333 was set to 2.81 volts out of the box, which is already a higher setting than the modules are designed for!

Of course it would be preferable to be able to adjust these settings from within the BIOS, but I think jumper settings are better than nothing.

Cpu Voltage Adjustment

The Award BIOS on this board offers CPU voltage adjustments within the 1.75 - 1.85 range. However, by using the jumper named "OVER1" it is possible to overvolt the CPU. This is a well known fact, I just thought I should add it to this article as it concers overvolting. On my Asus board, enabling the "OVER1" jumper gives me up to 2.21 Vcore! This is a very high setting, and must only be used with extreme caution, and extreme cooling.

Final Words

In my opinion Asus have done a good job with this motherboard. Good overclocking possibilites, and very stable even at high speeds. I have a locked Athlon XP AGOIA 1600+ (1400 MHz) running at ~1810 MHz with 1.80 Vcore, with a Glaciator mounted on it. Vddr is set to setting 3 shown above. Timings are 2-2-2-5 on Samsung 6ns DDR 2700.

Overvolting will allow for higher speeds for sure, but in the long run it will wear down the hardware. Good luck!

I have gathered some of this information using this Danish website, thanks goes to whoever wrote that article.

Allan Nielsen