SAPPHIRE RADEON HD 7850 VS 6870 - "The Sapphire Radeon HD 7850 review also featuring the Sapphire Radeon HD 6870. The Sapphire Radeon HD 7850 uses the Pitcairn GPU at 860Mhz and has 2GB GDDR5 memory running at 4800Mhz. The Sapphire Radeon HD 7850 has a 256it Memory Interface, 1024 Shader Processors and DirectX 11.1. We will be benchmarking the Sapphire Radeon HD 7850 to the Sapphire Radeon HD 6870 using Aliens Vs Predator, Battlefield 3, Crysis 2, Dirt 3, Hard Reset, Just Cause 2, Left for Dead 2 and Lost Planet 2."