EVGA GeForce GTX TITAN Z 12GB GDDR5 768 Bit GPU Graphics Card (12G-P4-3990-KR) Base Clock: 705 MHZBoost Clock: 876 MHzMemory Clock: 7000 MHz EffectiveCUDA Cores: 5760Bus Type: PCI-E 3.0Memory Detail: 12288MB GDDR5Memory Bit Width: 768 BitMemory Speed: 0.28nsMemory Bandwidth: 672 GB/s NVIDIA SLI ReadyNVIDIA SMX EngineNVIDIA GPU BoostNVIDIA Adaptive Vertical SyncNVIDIA SurroundSupports four concurrent displaysMicrosoft DirectX 12 API (feature level 11_0)Support NVIDIA 3D Vision ReadyNVIDIA CUDA TechnologyPCI Express 3.0 SupportOpenGL 4.4 SupportOpenCL SupportNVIDIA FXAA TechnologyNVIDIA TXAA Technology Recommended PSU: 700W or greater power supply with a minimum of 42 Amp on the +12 volt rail