DIAMOND RADEON R9 270X Diamond Radeon R9 270x is Pitcairn clocked at 1050Mhz with 2GB GDDR5 clocked at 5600mhz. Diamond Radeon R9 270x has 256Bit memory interface with 1280 shaders with directx 11.2 with TDP of 180. Sapphire Radeon R9 270x is Pitcairn clocked at 1020Mhz with 2GB GDDR5 clocked at 5600Mhz. Sapphire Radeon R9 270x has 256Bit memory interface with 1280 shaders with support for directx 11.2 with TDP of 180. Benchmark software for testing are Battlefield 3, Bioshock Infinite, Dirt 3, Farcry 3, Hitman Absolution, Max Payne 3, Resident Evil 6 and Tomb Raider 3. CPU is AMD FX 8350 with Gigabyte GA78LMT S2P using Windows 8 Operating System."