The ASUS GTX Titan Z is a brand new high performance graphics card with dual NVIDIA Ge Force graphics processing units (GPUs) running at 876 MHz & GPU Tweak for real-time graphics tuning. GPU Tweak helps modify clock speeds & voltage levels, as well as cooling fan speeds to let gamers overclock the GTX Titan Z graphics card with complete confidence. Additional features like 12GB GDDR5 memory & NVIDIA GPU Boost 2.0 provides users with the visual performance required for todays cutting-edge games. An online streaming function also lets users share their gaming action live with friends. Specifications Graphics Engine: NVIDIA Ge Force GTX TITAN Z Bus Standard: PCI Express 3.0 Open GL: Open GL 4.4 Video Memory: 12GB GDDR5 GPU Boost Clock: 876 MHz GPU Base Clock: 705 MHz CUDA Cores: 5760 Memory Clock: 7000 MHz Memory Interface: 768 bit Output 1 x Native DVI-I 1 x Native DVI-D 1 x Native HDMI 1 x Native Display Port 1.2