EVGA GeForce GTX 590 Classified 3072 MB GDDR5 PCI Express 2.0 3DVI/Mini-Display Port SLI Ready Limited Graphics Card, 03G-P3-1596-AR GeForce GTX 590 Classified with 630 MHz core clock 3456 MHz Memory Clock and 1260 MHz Shader Clock GeForce GTX 590 Classified with 630 MHz core clock PCI-Express 2.0 3072 MB 768-bit 0.4ns GDDR5 Memory 3456 MHz Memory Clock and 1260 MHz Shader Clock 331.7 GB/sec Memory Bandwidth NVIDIA Quad SLI ready 80.6 GT/s Texture Fill Rate Microsoft DirectX 11 Support