EVGA GeForce GTX 570 1280 MB GDDR5 PCI Express 2.0 2DVI-I/Mini-HDMI SLI Ready Limited Graphics Card, 012-P3-1570-AR NVIDIA 2-way and 3-way SLI ready 3800 MHz memory clock and 1464 MHz shader clock PCI Express 2.0 GEForce GTX 570 with 732 MHz core clock 1280 MB 320-bit 0.5ns GDDR5 memory GEForce GTX 570 with 732 MHz core clock PCI Express 2.0 1280 MB 320-bit 0.5ns GDDR5 memory 3800 MHz memory clock and 1464 MHz shader clock NVIDIA 2-way and 3-way SLI ready