btw I know someone who just got this setup:
-2 x 8600GT cards in SLI
-e6300@2.8ghz
-2gb ddr800
And got the following results:
3DM01 : 40500
3DM05 : 15023
3DM06 : 7871. SM2 : 3579, SM3 : 3058, CPU : 2441
Doom 3 : 1152x864, high detail, 8xAA, 8xAF - 71.5FPS
Lost Planet DX9 performance test : 1152x864, all high detail, no AA - 26FPS average
Which, IMO sucks.