GIGABYTE RADEON R9 270X is Pitcairn clocked at 1100Mhz with 2GB GDDR5 clocked at 5600mhz. Gigabyte Radeon R9 270x has memory interface of 256bit 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 memory interface of 256bits with 1280 shaders with directx 11.2 with TDP of 180. Benchmarks for testing Gigabyte Radeon R9 270x and Sapphire Radeon R9 270x is as follows:- Battlefield 3, Bioshock Infinite, Dirt 3, Farcry 3, Hitman Absolution, Max Payne 3, Resident Evil 6 and Tomb Raider 3. CPU is the AMD FX 8350 with Gigabyte GA78LMT S2P using Windows 8."