how many watts is ur PSU... I have a 750w and I'm using a 1x5850 windows 7 x64 i got 4GB of ram... and a E6550 overclocked to 3.4GHz.. no games crash... i play Aion, CoDMW2, GRID, Bioshock 2, GTA4, Dirt 2, IL2 of coarse, DCS:BS... and other games when i get bored... IL2 is the only game i used to have problems with...
I used to have a cheap sparkle 650w and my computer crashed left and right... at first i thought it was my motherboard so i bought a new one... but it still did it... so i bought new ram... still did it... shoulda realized it was cause my comp just wasn't getting enough juice so i went for a more expensive PSU and got a name brand coolmaster 4-rail 750w sustained PSU with >80% efficiency and my computer ran 10x faster and never crashed
