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Old 04-24-06, 02:56 AM   #11
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Join Date: Dec 2003
Location: aberystwyth, wales
Posts: 31
Default Re: Performance of my shiny new 7800GS a bit disapointing

Trying to tie this down a bit, I've noticed an interesting thing...

The card is actually quite fast (not as fast as I'd hoped for, but better than the terrible scores I've been getting) if you just run around in the same room for a while. It seems the slowness only comes when you see new stuff for the first time.

I'm not sure exactly how to explain this. Perhaps the engine is having to send the card new data, and there's a problem there? With 512megs of RAM on the card I'd have thought there would be enough space to pre-load everything.

The CPU probably would be a bottleneck on Doom3 engine if the card was running as expected, but remember I also get very poor performance in ut2004, and the CPU is more than fast enough for that engine.

Maybe enabling fast writes would help. I've tried this but couldn't get it working. I added the line:

options nvidia NVreg_EnableAGPSBA=1 NVreg_EnableAGPFW=1

to /etc/modules.conf, but when I restarted it still wasn't enabled.
Jim1 is offline   Reply With Quote