Sapphire ATI Radeon HD 4850 X2 2G GDDR3 PCI-E

I/O Output: Dual DL-DVI-I x 4 +HDTV
Core Clock: 625 MHz amp; Stream Processors: 2 x 800
Memory Clock: 993 MHz, 1986 Mbps
PCI Express 2.0 x16 bus interface
2x 1024MB /2x256bit GDDR3 memory interface
Dual Slot Dual Fan Active Cooler with Fan Speed Control
HDMI compliant via dongle
7.1 Audio Channel Support
Microsoft® DirectX® 10.1 support
Shader Model 4.1 support