Diamond Viper 3850PE3512 ATI Radeon HD 3850 512 MB GDDR3 Ruby Edition Graphics Card PCI-Express x16 graphics card featuring the ATI Radeon 3850 GPU for outstanding gaming performance 512 MB of GDDR3 RAM running on a 256-bit interface at 900 MHz; graphics processor has core clock speed of 725 MHz Supports Crossfire X for easy upgradeability by adding a second graphics card Support for full DirectX 10.1 and Shader Model 4.1, and OpenGL 2.0 Backed by a 1-year warranty