last single card comp was won by nvidia GTX285
you are on around 89.4K if you can hit nature cap so there is still some more tweaking there but you are doing pretty good for someone who just started getting into it mate
ATI's achillies heal is nature with nehalem so thats the major issue right now for going red
[edit] yes CPU test in '06 for example will change a lot depending on which card you have (nvidia or ATI) and also which OS you are on and what GFX card clocks you are on