ASUS EAH4650/DI/512MD2 (LP) Radeon HD 4650 512 MB 64-bit DDR2 PCI Express 2.0 x16 CrossFire Supported Low Profile Ready Video Card Radeon HD4650 Engine Clock: 600 MHz 1GB of GDDR2 memory. Memory Clock: 800 MHz. Memory Interface: 64bit DVI -I/VGA /HDMI / /HDCP Compliant