If youre passionate about first-person shooters like Call of Duty, massively multiplayer online games like World of War Craft, or real-time strategy games like Star Craft II, Ge Force GTX is for you. & your first step into Ge Force GTX gaming is the EVGA Ge Force GTX 650. Performance NVIDIA GTX 650 384 CUDA Cores 1202 MHz GPU Memory 2048 MB, 128 bit GDDR5 5000 MHz (effective) 80 GB/s Memory Bandwidth Interface PCI-E 3.0 16x DVI-I, DVI-D, Mini-HDMI 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 400 Watt power supply (Minimum recommended power supply with +12 Volt current rating of 20 Amps.) Total Power Draw: 64 Watts