Undervolting Asus P4 possible?

burcakb · Post by **burcakb** » Fri Jan 28, 2005 1:38 am

Hello all,

I've been away from the Intel platform for a long time. From all that's been written on this site, I know I can't expect to undervolt an Asus P4 board through BIOS.

What I'm wondering is has anyone had any success with software? Say, CrystalCPUID or ClockGen?

I'll have to do some work on one on Sunday, I've got limited time and all I know is it's an Asus board, P4 northwood 3.0 865PE chipset.

Post by **Ralf Hutter** » Fri Jan 28, 2005 5:59 am

In the past, my answer would be "no", but I've recently heard claims that Asus' "AI Booster" can lower the Vcore from within Windows on certain supported boards.

I haven't had the balls to try it yet because I've never had good luck, stability-wise, with software-based apps that control low level hardware functions like BIOS settings. YMMV of course!

tay · Post by **tay** » Fri Jan 28, 2005 6:58 am

Ralf Hutter wrote:I haven't had the balls to try it yet because I've never had good luck, stability-wise, with software-based apps that control low level hardware functions like BIOS settings. YMMV of course!

Funny thing is 8rdavcore allows me to some nice underclocked settings and is stable with prime95 etc at these settings. But very infrequently there is a driver that BSODs while watching divx (it happened three times one evening and never again). Despite this I am sticking with 8rdavcore for now.

Sorry for dragging this further off topic burcakb.

JohnMK · Post by **JohnMK** » Mon Jan 31, 2005 12:43 am

My Asus P5AD2-E Premium allows me to specify a lower than default voltage, slightly. It can go as low as 1.300 volts, within the BIOS. Which is a step below the 1.40 volts default for my 560J (3.6GHz) CPU. It also run sat 3.80GHz just fine at 1.30 volts.

bomba · Post by **bomba** » Mon Jan 31, 2005 8:50 pm

My main rig has a P4 2.4C on a Asus P4P800dlx. I use AI Booster to undervolt/underclock in Windows, works great. This shot shows AI Booster configured for max. underclock and undervolt. The 2.4C is running at 1.2GHz at 1.1Vcore. The Nexus 92mm modded Zalman 7000 is slowed to 706 rpm.