Asus ATI Radeon CuCore HD5770 1 GB DDR5 PCI-Express Graphics Card EAH5770 CUCORE/2DI/1GD5 DVI/VGA/HDMI/HDTV 1080I support 1GB of DDR5 memory; Memory Clock: 4800 MHz; Memory Interface: 128 bit Radeon HD5770 ASUS Cooler: CU Core Fansink Engine Clock: 850MHz ASUS Cooler: CU Core Fansink Radeon HD5770 Engine Clock: 850MHz 1GB of DDR5 memory; Memory Clock: 4800 MHz; Memory Interface: 128 bit DVI/VGA/HDMI/HDTV 1080I support