EVGA GeForce GTX 660Ti FTW LE 3072MB GDDR5 DVI-I DVI-DHDMI DP SLI Graphics Card 03G-P4-3666-KR Base Clock: 915 MHz Boost Clock: 980 MHz Memory Clock: 6008 MHz CUDA Cores: 1344 PCI-Express 3.0 3072MB 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