should be pretty damn good w/ just 1 installed i actually only got 2 because i got a very good rebate deal on 2 lol i payed 340 and got 2 50$ rebates. I was using a HD5450 before and getting 10-30 (40$) video card now using the HD6850's and getting 45-60 (200ish $ card) 340$ for 2 and 2 50$ rebates 240$ great investment. Now i need to upgrade my processor and ill prob have even better results.