SAPPHIRE FleX HD 5770 1GB GDDR5 .

fully working! Output 1 x Dual-Link DVI 1 x HDMI 1 x DisplayPort 1 x Single-Link DVI-D GPU 850 MHz Core Clock 40 nm Chip 800 x Stream Processors Memory 1024 MB Size 128 -bit GDDR5 4800 MHz Effective for full info, go to http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=643&lid=1&pid=355&leg=0