NVIDIA GeForce GT 545 1.5GB DDR3 PCI Express (PCI-E) DVI Video Card w/HDMI, DisplayPort & HDCP Support NVIDIA GeForce GT 545 1.5GB GDDR3 PCI Express Video Card General Features: NVIDIA GeForce GT 545 graphics processing unit (GPU) 144 CUDA cores 720 MHz core clock 1440 MHz shader clock 1.5 GB (1536 MB) GDDR3 memory 192-bit memory interface 800 MHz memory clock PCI Express 2.0 x16 interface Microsoft DirectX 11 support OpenGL 4.1 support NVIDIA PhysX Technology