EVGA GeForce GTX 660 SIGNATURE2 2048MB GDDR5 DVI mHDMI DP Graphics Card 02G-P4-2663-KR Microsoft DirectX 12 API (feature level 11_0) Support Base Clock: 1072 MHz Boost Clock: 1137 Memory Clock: 6008 MHz CUDA Cores: 960 2048 MB, 192 bit GDDR5