If I could buy another 7950GX2, i wouldnt worry about a pair 8800s for a long time.
XP64bit, COD2, BF2, etc, all extremely high fps.
Only thing it will lag in tho is HL2 source based games and fear which arent written properly for SLI.
and by lag i mean no lag at all compared to other solutions anyway for gaming.
AW hell. I might aswell keep it, no use selling it to a bunch of 8800 pushers. im waiting for an 8900 anyway.