OC results with GF 6800LE

Zap

Elite Member
Oct 13, 1999
22,377
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I just got myself a refurb (hey, cheap) Apollo Geforce 6800LE and have spent a tiny bit of time fiddling with it.

"Official" Nvidia settings:
6800LE 8p4v 300/700
6800 12p5v 325/700
6800GT 16p6v 350/1000
6800Ultra 16p6v 400/1100

Software: WinXP, Forceware 71.84, Rivatuner 2/15.4, no BIOS or driver optimizations except for fiddling in Rivatuner, Windows was installed, updates and drivers installed, Rivatuner and 3DMark 2003 installed.

System:
Mobile Celeron 2.4@3.2GHz
1GB (2x512) Kingmax PC3200 running at SPD
Asus P4S800-MX motherboard
etc.

8p4v 300/700 (defaults)
6503

12p6v 300/700 (enabling 4 more pipes, yes enabled all 6 vertex but dunno if that changes much)
7977

8p4v 347/875 (overclocked, stock pipes)
7282

12p5v 347/875 (overclock, pipes, vertex)
8640

Problems and questions:

Pipes are labeled 00, 01, 02, 03. The really bad one is 03. With that enabled, massive corruption. 00 is the other one that I can enable. No visual corruption, but the "test" for overclocking fails the GPU at default speeds even. Without 00 enabled, can get up to 347MHz on the GPU. Bad news, eh? Now, I seem to be able to get both pipes and overclock if I overclock first, then enable pipes. I get some flashing textures in 3D. Should I leave it this way, with both overclock and pipes? Hmmm, probably stick with overclock... dunno.

Enabling more pipelines dramatically increases scores. What the heck does the vertex units do? I think I tried going from default 4 to maximum 6 with nothing else changed and I got around 20 more 3DMarks, negligible.


Ahhh, haven't fiddled around so much with video cards (beyond basic overclocking) since my Matrox G200. Ran that baby on an Asus P5A board with an AMD K6-200. Got around 14 FPS in Quake 3 Test, so overclocked my CPU to 225MHz and tweaked out my G200 with some util that let me change latencies for various bits in the video card. Also, put a fan on the passive heatsink. Quake 3 Test scores jumped to around 48 FPS.