Vista? It seems performance is worse in Vista then in XP then because those scores are still very low for the clocks. Lightman got around 3900 2k6 CPU score IIRC at 2.6GHz. The bandwidth is especially bad, like single channel.

This is Sandra with the support patch at around DRR2-840 4-4-4-4 with apps in background (WCG) running:



Yours should be much higher.