Radeon HD4870 512MB GDDR5 PCIe 2.0 Graphics Card

ATI CrossFire Support ATi CrossFireX
OpenGL Support OpenGL 2.1
DirectX Support DirectX 10.1 (Shader Model 4.1)
Graphics Processor ATi Radeon HD 4870
Core Clock Speed 750MHz
RAMDAC Clock Speed 400MHz
Memory Installed 512MB GDDR5
Memory Clock Speed 1800MHz (3600MHz Effective)
Memory Bus 256-Bit
Stream Processors 800