EVGA GeForce GTX660 Ti FTW Signature 2 2048MB GDDR5 192-Bit, Dual DVI-D, HDMI, DP and 3-Way SLI Ready GPU Graphics Cards 02G-P4-3664-KR Base Clock: 1046 MHz Boost Clock: 1124 MHz Memory Clock: 6008 MHz Cuda Cores: 1344 PCI-Express 3.0 2048MB GDDR5 192-bit Nvidia SMX Engine, Nvidia GPU Boost, NVidia Adaptive Vertical Sync, Nvidia Surround, Support for Concurrent Displays, Nvidia PhysX, Nvidia 3D Vision Ready, Nvidia SLI Ready, Nvidia CUDA Technology