Problems with Geforce2 and white flickering, please help

[Warhead]

Prelude:
I upgraded my system to:
800 Duron
Epox EP-8KTA+ (VIA KT133)
ELSA Gladiac Geforce2 GTS
and because my old ISA SB didnt work without crackling, SB LIVE! 1024 Player
Problem:
HL and Quake3A work fine, but Project I.G.I. and the helicopter part of 3DMark2000 I get strange
graphic glitches: Sporadic flashing in of a white background, thats what it
looks like. When I deactivate my SB, those glitches disappear. Im not quite
sure, but it could be that turning down hardware acceleration for the SB
does help. Disabling Vsync for D3D does the trick also.
But I hate tearlines...

I try to do a short summary what I tried up till now:
- Geforce and SB dont share a Interrupt with another or any other card
- I tried all possible AGP settings in BIOS and in VIA-drivers
- I have the newest drivers for the cards, for Geforce I tried the ELSA and
several NVIDIA
- I de-/activated the busmaster DMA feature
- I installed DX8, before I was using DX7a
and some more things I cant clearly remember right now.
I'd really appreciate all the help you can give me. Just tell me everything you can think of.

Is it a common driver problem? I noticed that I dont have Vsync in windows with the new system...
I tried Det6.34-6.49. Any ideas?
If someone has the same system please tell me if it works for you.

 

[DioCassius]

I'm not exactly sure what your problem is, but it sounds like something i've witnessed. Do you have agp 4x enabled? If you do, you could try changing the agp drive value. It should be on auto - switch it to EA or DA in the bios. I've got an abit kt7, but it is also based on via kt133, so you should have this option also. Hope this helps.

 

[Warhead]

I did try to alter this setting. But keeping it to xA changes nothing, and other values cause really bad errors.

 

[Lowfat]

I don't know if this helps, but it seems like a D3D problem. I've experienced it even worse, as opengl games worked fine, but D3D games har white horisontal lines across the screen (Geforce 256 DDR by the way). Turned out that the memory on the videocard was faulty, so I returned it and got a new one. Needless to say, it worked fine. So, I would recomend you try another Geforce card (if you can borrow it from a friend or something), or if it's a new card, call support and get it switched for a new one.

 

[billyjak]

Up your I/O voltage to 3.40, should take care of it.
Got this directly from the Herc Q&A sight on GF2 cards.