Get to the next level with the EVGA Ge Force GTX 680. This card delivers truly game-changing performance that taps into the powerful new Ge Force architecture to redefine smooth, seamless, lifelike gaming. It offers brand new, never before seen features that will redefine the way you think about performance graphics cards. Expect more from your graphics card that just state-of-the-art features & technology; get faster, smoother & a richer gaming experience with the EVGA Ge Force GTX 680. Performance NVIDIA GTX 680 1536 CUDA Cores 1111 MHz GPU 1176 MHz Boost Clock Memory 4096 MB, 256 bit GDDR5 6008 MHz (effective) 192.25 GB/s Memory Bandwidth Interface PCI-E 3.0 16x DVI-I, DVI-D, HDMI, Display-Port SLI Capable Resolution & Refresh 240 Hz Max Refresh Rate Max Analog: 2048x 1536 Max Digital: 2560x 1600 (Dual Link DVI Only) Operating System Support Windows 8 32/64bit Windows 7 32/64bit Windows Vista 32/64bit Windows XP 32/64bit Requirements Minimum of a 550 Watt power supply. (Minimum recommended power supply with +12 Volt current rating of 38 Amps.)