Hello everyone! My system: Motherboard: GIGABYTE MA790GP-DS4H AMD 790GX DDR2 HDMI HD3300 Cpu: Phenom II X4 940 Quad-Core 3.0GHz 8MB AM2+Black Edition Ram: KINGSTON HyperX 4GB 1066MHz DDR2 CL5 Hdd: WESTERN DIGITAL Caviar Black SATA2 500GB 32MB Vga: HIS HD4870 IceQ 4+ Turbo 1GB 256bit GDDR5 16X Psu: OCZ StealthXstream 600W I was getting blue screens from time to time on my system dunno if it is something about this problem but a few days ago i pushed power button fans worked for 0,5-1 sec and then they stopped. I tried it again but my system didnt work. Thought it was a little problem i checked cables etc but i couldnt fix it. Then i sent it back to pc shop. They just called me to gave information about problem. They told me that my vga and psu is not working anymore.. They sent vga to HIS they said it will be possible to fix it but it will take a month. Now i need to buy new VGA (maybe another 4870 i can crossfire when they fix other one) and a good PSU. Question 1: Do you think OCZ StealthXstream 600W was enough for my system ? Or it wasnt enough and thats why i had too many problems ? (i also had 67 blue screens in 5 months) Question 2: Is it a good idea to buy another 4870 or do you prefer selling 4870 and getting a new vga ? If yes can u gimme links so i can check them. Question 3: What kind of psu do i need to run my system + 2 HIS HD4870 IceQ 4+ Turbo 1GB 256bit GDDR5 16X (crossfire). Can you help me to find a good one ? Thanks in advance..