ZOTAC nVidia GeForce 8400GS TurboCache 512 MB DDR2 VGA/DVI/TV-out Low Profile PCI-Express Video Card (ZT-84SEH4P-FSL) Video Memory: 256MB (Up to 512MB with TurboCache) Memory Interface: 64-bit Memory Clock: 667 MHz Engine Clock: 459 MHz Chipset: GeForce 8400GS