I did alot of goggle-ing, can't find a straight answer, but http://www.tomshardware.com/reviews/...rd,1923-5.html
said that "Performance is also comparable to a pair of 9600 GTs in SL" then "Two 9600 GT cards in an SLI configuration will offer performance similar to that of a dual-GPU 9800 GX2, for a bit more than half the price."
If that is true, it would be the best bang for the bucks for crossfire! but the Evga has the step-up program, when 9900gtx comes out, the 9800gtx will drops like hot cake i predict, then can switch to a new card by the time it comes out.
As of right now, please tell me what you think, and what would you choose?
I'm quite sure the performance of the 4850 with GDDR3 due out mid June will be similar, without issues in games that do not support Crossfire. So, that would be the reason to wait.
At any rate, I wouldn't recommend two 3850's or 3870's right now, as just getting one and then going CrossfireX later with a dual GPU card is a better solution. For anyone with a single PCIe x16 board, I'd definitely recommend waiting for the 4xxx series.