Depends really, its also down to your PCI-E version as well, as the 2.0 standard has 2.5 more gb's of bandwidth to play around with.
The 4870x2 is the best single card solution to buy, but the gtx 280 performs better in crysis (probally due to the relentless driver updates for the game, and was the main reason i bought one cause i love that game

). I would suggest rather than going out splashing out on something brand new tht ur pc may or may not handle, save up for a couple of months and buy yourself a new mobo/cpu/ram. Expecially as intel are bringing out a new series of cpu on the 45nm process.
Good thing about the 4870x2 is you won't need your heating on in the winter
Albeit, i'm particularly interested in newer benchmarks as nvidia have churned out some new drivers claiming 15% performance increases and physx support.
Edited by evensis on 08/09/08 4:15am