For no particular reason, I'm trying to take a Pentium D 940 from 3.2GHz to >4GHz. The system is liquid cooled (Thermaltake waterblock). I'd like onboard gigabit, AGP/DDR (just to use existing assets). Onboard audio is optional. Under $100 would be good.

Would an ASUS P5P800 work? I think it meets all my criteria, but I don't know if it allows adjusting the multiplier (or are all Pentium D's multiplier locked?). With the GIGABYTE board I have, I can only reach 212x16 (~3.4ghz), but it has no voltage control. And with PC3200, I need to achieve at least 400 FSB. I just don't know if the ASUS P5P800 supports Pentium D's well, and I don't know what other similar boards are available (and possibly cheaper), as long WinXP drivers are available. Just looking for suggestions. And this is just a home project - I just happened to have a D940, 7800GS AGP, and PC3200 DDR, and happened to get a Thermaltake LCS for cheap. Figured I'd shoot for 4GHz..

Thanks!

"with PC3200, I need to achieve at least 400 FSB"

PC3200 runs at 200MHz, not 400MHz.

Bite the bullet & upgrade to PCI-e & DDR2. Here's some descriptions of the current chipsets for the Intel platform:

http://www.xtremesystems.org/forums...

My bad on the 400MHz, thanks. True, the processor would way outperform the RAM. The 7800GS AGP I've got is decent enough, but true, I really need to go with DDR2 on this.

This is just a spare computer to play with, just experimenting with liquid cooling. My other processors are a BE-2350 (45W), E2180 (65W), AM2 4200+ (the 65W and 89W), an older Barton 2600, and a Q6600, all running PCIe/DDR2-PC6400 (except the Barton, it's also AGP/DDR). This spare computer is just stuff I've collected dirt cheap, so I don't might killing it -- ultimately I'd like to hit a stabel 5GHz (I've heard of it being done with a D-series). My other systems are all still air cooled, but they run really stable.

Anyhow, maybe I'll ditch the 7800 (eBay), I don't really need that much video power here. I still need a board that will let me do 800MHz FSB (I'll use some PC6400's I've got around, but their cheepy 5-5-5-15 variety).

I've got an ASUS P5N-E SLI running this D940 stable at a hair over 4GHz. It's hot though, about 58degC at idle. The ASUS mobo S/W reported 70degC with the processor under load, and it seemed to peak at about that (70-71degC). The Vcore is 1.52V. Thermaltake liquid cooling. Used a 1:1 memory ratio. Some Corsair XMS RAM wasn't compatible, using some high grade G.Skill DDR2 memory chips.