Hi guys!
I am thinking about buying a new graphics card, but I am not really sure which card I should buy.

My PC: Opteron 185, 2 gigs RAM, Dfi LanParty UT nf4 D ultra (nForce 4). 500W Fortron power supply.

I was thinking about 4870, since there is a really nice price/power ratio, but then I read somewhere, that there could be some problems since I have an nForce chipset. I am not thinking about crossfire (which is not possible on nforce anyway) or sli, I just want a single card. So, does anyone have an ATI card with nforce? Do you think there might be some problems?

Btw I know the cpu might actually slow the card down, but that I don't mind, just need to know if I get full power without problems if I get this card.