AGP2PCIX adapter built:
http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1386098580

Voodoo5 5500 mod from 3.3v only to 1.5v only AGP4x

http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1383162416

Voltmod guide to Voodoo5 5500 PCI (GPU and RAM), Voodoo4 AGP (GPU) and Voodoo4 PCI (GPU and RAM)
http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1380984242

Yes I do Not ready to go public and no time to finish the work yet.

Later edit:
http://abload.de/img/011020136csz4.jpg

Voodoo5 cards modded with 4ns/4.8ns fast RAM, GPU voltmod and overclocked up to 207Mhz stable.

http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1372485869

Thanks M14Radu for allowing me to mod his hardware!

I'm sure that with better back cooling you could go to a higher clock, so keep up the good work and let us know when there's news

What the F[!]
Sorry about that; sorry for asking, had no idea...

Still have the card? Were the problems fixed?

I have tried many. Don't worry, soon you will receive your own V5 5500 AGP that I recently modded to 128Mb and you will have the chance to do more tests that I lack the free time for.

Forgot to mention: with the default driver included with Win XP it does work. I remember narrowing down the quirk to the miniport part of the driver.

QuoteOriginally posted by goriath
Could be a matter of bios settings?
Could you list which motherboards have problems with the modded Voodoo5 under 2k/XP?

I have tried all I could with Epox KT333 (8k3a) and Toshiba i815 (Equium 8000s) and with a AGP V5 5500 128Mb Windows 2k/XP will not load to desktop. However, on Tyan S2466, ECS RS400-A and Biostar K8T890-A9 there were no such problems. I have modded a small number of these cards for some people and maybe they can share the results they got on different motherboards.

Worth mentioning for those wanting to use AGP 3.3V 3dfx cards on modern systems: ECS's AGP Express and Biostar's XGP tested compatible (they are in fact integrated AGP2PCI-like adapters:
http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1185303152/60

Empty RAM slots, like on the Voodoo4 AGP.
http://www.vgamuseum.info/images/stories/palcal/3dfx/97_voodoo_3_2000_pci_rev.c_3dfx_top_hq.jpg

@Glide: Voodoo5 128Mb about 15 percent better performance in benchmarks and is able to start games that won't run on the original 64Mb card. With the AGP there is the issue of compatible motherboards. Under Windows 9x the card has no problems, but Under 2k/XP/2003 it will not go to desktop on some motherboards. The PCI variant has no such problem.
On the other hand, the Voodoo4 AGP 128Mb will not run correctly under Win 9x but works just fine with 2k/XP.
@Nightbird: Can't do the Voodoo3 yet as I have no money available to buy the cards, so unless I receive a donation (2xVoodoo3 PCI SGRAM is what I need) it will take some time. I think I found the loophole to perform the mod to 32Mb, but until someone tries it, will never know...

Not sure anyone here cares about it, but I'll keep this thread updated.
Voodoo Graphics mods from 4Mb(2+2) to 6Mb(2+4 and 4+2) and 8Mb(4+4) project is finalized.
http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1366485713