Re: Poor performance 1.0-9746 / Quadro NVS 280 PCI / FC6-x86-2.6.19-1
You're using a PCI bus graphics card, so I'd guess that you're getting heavily limited by the much slower PCI bus speeds (as compared to AGP or PCI-E). Its been quite a while since I've benchmarked any PCI graphics cards with SPEC Viewperf, as they really aren't considered to be a performance solution.
About the only thing that I can suggest at this point is to run X at a smaller resolution than 1600x1200 and also to verify that you're using the latest motherboard BIOS. Beyond that, I think you're hitting hardware limitations.