Single card= 8800GT
Dual card= 2x 3870's or 3870X2.
I'll say the 3870X2
yeah i would say the dual 3870X2
but dont you think its a bit of an overkill?
i would think just one alone is plenty of power to run most of todays games on high.
and whatever you save from not buying another card to crossfire/sli you could put towards when you find your gfx card needs upgrading again.
thats just the way i see it but you might dissagree with me
Nevakonaza
If you are questioning going dual GPUs on lower end nice cards (budget) then I would recommend neither. In comparison to the amount of additional performance you will see the price double is not worth it.