Galaxy GeForce GTX 570 1280 MB GDDR5 PCI Express 2.0 DVI/DVI/Mini-HDMI SLI Ready Graphics Card, 57NKH3HS4GXK Chipset: GeForce GTX570 Engine Clock: 732 MHz Video Memory: 1280MB DDR5 Memory Clock: 1900 MHz (3800 MHz Effective) Memory Interface: 320-bit Memory Bandwidth: 152 GB/s Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz