Hello guys i dont understand to much in hardware but can any one tell me on what settings could i run Bf3 with a hd 6750 1gb gddr5 dx11 with a cpu of intel core 2 duo e8400? right now i have a 9500gt so if the other gc isnt really recommended can some one recommend me a better gc with about the same price maybe abit higher or lower, thank you for your time.
The 6750 is pretty good GPU for the $. The 6770 would be the logical upgrade for about $10-20 more, but I don't know if that fits within your budget. I'm not sure what resolution your gaming under, but I'd expect that you should be able to play BF3 with decent settings up to 1680 x 1050 or so. It'll dpend on how much RAM you have too and what resolution your gaming under.
As long as it's a quality PSU. Generic and/or weak PSU's at 500w aren't the same thing as a quality 500w PSU. Don't assume that all 500w PSU's are made the same.
Well, recommended PSU for GTS 450 is 400W, and for HD 6770 its 450W. Of course though, if he has a crap PSU which cannot deliver enough power - it will not run - you are right, it needs to be a quality PSU.
Well if we had some more information (like make and model of the PSU) than we would know if his PSU was good enough for a 6770 or better. If it's an Antec Earthwatts 500w PSU than he'll be fine, but it's an off brand than I wouldn't touch it with a 10' pole