MSI RADEON R9 290X MSI Radeon R9 290x is Hawaii clocked at 1080Mhz with 4GB GDDR5 clocked at 5000Mhz. MSI Radeon R9 290x has memory interface of 512Bits with 2816 shaders with directx 11.2. MSI Radeon R9 270x is Pitcairn clocked at 1100Mhz with 2GB GDDR5 clocked at 5600Mhz. MSI Radeon R9 270x has memory interface of 256Bits with 1280 shaders with support for directx 11.2. Benchmark software is 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."