Case: Cooler Master 690 II Advanced
CPU: Intel Q6600 SLACR @3.4GHz @1.28v
Motherboard: Gigabyte GA-G33M-DS2R
RAM: 8GB G.Skill [email protected]
Power Supply: Corsair HX750W
Cooling: Corsair H80
Video: Gigabyte GTX 460/EVGA GTX 570 HD
HDD: Western Digital 320GB Caviar Blue (OS)
500GB Caviar Black (Storage)
OS: Windows 7 Professional 64-bit
GTX 460 768MB with core overclocked to 850MHz (couldn't seen to get anything above 850MHz stable) and memory at stock frequency (I have no heatsinks on my RAM chips):
Tests run on Battlefield 4 on Low graphics settings, as it was completely unplayable on any other graphics quality level.
Min FPS: 18
Max FPS: 61
Average FPS: 32-46.4 (averages across multiple test runs)
GTX 570 1.25GB:
Min FPS: 21
Max FPS: 67
Average FPS: 43
Game feels considerably less glitchy with a GTX 570 than it does with a GTX 460, and much more comfortably playable. The 460 is weird because it's usually in the 25-40 FPS range, but will randomly drop down to 10-15 FPS at times (and all the way down to 1-5 FPS if played at Medium settings or above). So, the 460 will randomly become like watching a slideshow while in a game.
460 is unplayable for most modern games at that resolution. It's just too old. You would have to run minimal settings at 1080p. It would look better to drop down to 720p and up the settings slightly, but even then there is only so far you could go.