i have two years whit this PC and is not so bad:
*windows 7 64bits (of course!!!!!!!!)
*Core2Quad 9400 2.66Ghz 45nm
*2x2gb ddr2 800 Kingston (i gonna buy another 4GBRAM when Storm Of War release)
*XFX Radeon HD 5850 Black Edition 1Gb DDR5 765Mhz/1440steam/ 4.5Gbps (I buy this in January2010, very nice videocard, u$s300? dont remember )
*Power&Cooling Silencer 750Watts (elementary for big videocards,i buy this too in january2010 u$s 150)
*1/2 Terabyte Western Digital 32mb (is okay for me, only i have 2 GB of music)
*Mother Assus P5QLE (have a maximum of 16gbram, is a little old but is okay)
*DVD/RW 20x dual layer LG
*LCD Samsung P2350n 23" (nice inversion, in nov 2009, now is more expensive,)
*sound: Edifier C2 2.1+1 : (nice)
*jostick : microsoft sidewinder

(time of changes, but in il-2 work fine)
1200 res and very high texture in wings of prey. works fine.
Are so much the differences between Core2Quad 9400 2.66 and I7 ????!!!!!!!!