The rev. 1 P5P800 does not support the Cedar Mill stepping of the P4. I'd like to use this board for a Windows XP build to mess around with late-model AGP cards, I know there was a modded BIOS that allows for this CPU stepping to be used. Anyone have access or know where to get the BIOS or how to mod the official BIOS? Thanks.
IMO, best bet is to get an Asus P5PE-VM (i865G/LGA775). It has native support for Conroe X6800.
Edit: Checked eBay, just a few months ago, they seemed plentiful and going for around $30. Hmm...
Thanks, ordered one along with a Core 2 X6800 (for $40 for both) to see what I can get out of some of these old AGP cards. Particularly want to see how the Matrox cards and Voodoo5 5500 do with this CPU.
Is that board compatible with AGP 3.3v cards? I highly doubt it.
wrote:Is that board compatible with AGP 3.3v cards? I highly doubt it.
Good point, only 1.5V and 0.8V so I guess no V5 testing, unless I find a cheap PCI version... bummer!
For practical purposes, pretty much all 3.3V only AGP cards will be bottlenecked by a high end P3 system.
wrote:For practical purposes, pretty much all 3.3V only AGP cards will be bottlenecked by a high end P3 system.
That's why you get a KT333 and stick a 3200+ on it, or grab one of those rare(ish) universal AGP socket 478 SiS board and stick a 2800MHz prescott in there.
Apparently there's a lot of NOS i865G / LGA 775 motherboards for around $50 US shipped.
https://www.ebay.com/itm/ASRock-775I65G-R3-0- … rd/291286875270
wrote:wrote:... or grab one of those rare(ish) universal AGP socket 478 SiS board and stick a 2800MHz prescott in there.
I have one like that, although the 2800 is a northwood, not a preshott 😎.
I'll probably be testing mainly with a 128MB Matrox Parhelia and maybe a G400 MAX card just to see how they perform. The Parhelia is interesting due to its AA implementation but I know on period hardware it's performance was underwhelming, don't expect that to change much even with an X68000 CPU but it should be fun to mess around with!
