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Rec.Autos.Simulators Archive

SLI mode and GPL

5 posts by 4 people · 14 Oct 1998 - 18 Oct 1998

Mike Dietz 14 Oct 1998#427636
With the dramatic decrease in price in VooDoo2 cards 2 12 megs for $229 I was wondering how GPL would benefit via the increase over a 8 meg Voodoo2 card ? Would I see a big increase in higher resolutions in fps. I am not interested in eye-candy per se but it is so much easier to driver when you can see further down the track clearly.
I have a PII 300 with 96K ram L2512 cache and a Voodoo2 card. I tried linking two Voodoo2 cards via SLI and it actually decreased my FPS rate in GPL slightly. :( James
David Sca 14 Oct 1998#427638
>I have a PII 300 with 96K ram L2512 cache and a Voodoo2 card. I tried linking >two Voodoo2 cards via SLI and it actually decreased my FPS rate in GPL >slightly. :( This is probably related to the fact that the 3dfx drivers actually underclock both cards by 5Mhz from the registry value when in SLI mode. Apparently, about 1% of the cards displayed stability problems in SLI, so that was 3dfx's "fix" This was recently discovered by Creative Labs and discussed in the voodoo2 newsgroup on the 3dfx news server and at www.voodooextreme.com. ------------------------------------------------------------------------------------------ This space intentionally left blank
Jerry 15 Oct 1998#427917
Quoted text (15 lines)>>I have a PII 300 with 96K ram L2512 cache and a Voodoo2 card. I tried >linking >>two Voodoo2 cards via SLI and it actually decreased my FPS rate in GPL >>slightly. :( >This is probably related to the fact that the 3dfx drivers actually >underclock both cards by 5Mhz from the registry value when in SLI >mode. Apparently, about 1% of the cards displayed stability problems >in SLI, so that was 3dfx's "fix" >This was recently discovered by Creative Labs and discussed in the >voodoo2 newsgroup on the 3dfx news server and at >www.voodooextreme.com. >-------------------------------------------------------------------------
----------------- >This space intentionally left blank I also had SLI decrease performance on my Celeron 448MHz and SLI Creative Labs V2s clocked at 90MHz. With one I ran 36 fps, by myself at 640 x 480 with 19 AI cars. When I enabled SLI that I never went over 30 fps. I thought it was a bug in GPL but maybe it's a 3Dfx driver issue. Don't look for SLI to help with GPL, get a bigger CPU not another V2. By the way, my Genoa V-Raptor 4MB AGP is faster and smoother than either 3Dfx combination at 640 x 480 with GPL. Papyrus definitely wrote for Rendition first then made it work with 3Dfx. Jerry
Jerry 18 Oct 1998#428610
I don't think so. I run 85Hz refresh. Only change is check mark disable SLI in 3Dfx advanced settings. I think 36 frames is max no matter your refresh rate. I have answered all your question truthfully, honestly, and to the best of my ability. I never , never, ever, had SLI running more than 30 frames per second in GPL. Jerry

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