SAPPHIRE Vapor-X HD5750 1GB GDDR5 PCIE Vapor-X Cooling Technology, under 25dBA operation noise! Microsoft DirectX® 11 Support Shader Model 5.0 Support DirectCompute 11 Programmable hardware tessellation unit Accelerated multi-threading HDR texture compression Order-independent transparency ATI Eyefinity Technology(B.C.) ATI Stream Technology(A.E.) Designed for DirectCompute 5.0 and OpenCL Accelerate Video Tanscoding 40 nm Process Technology

SAPPHIRE Vapor-X HD5870 1GB GDDR5 PCIE Vapor-X Cooling Technology Microsoft DirectX® 11 Support ATI Eyefinity Technology(B.C.) ATI Stream Technology(A.E.) Designed for DirectCompute 5.0 and OpenCL Accelerate Video Transcoding 40 nm Process Technology

SAPPHIRE VAPOR-X HD 4890 2GB GDDR5 PCI-E OC Factory overclocked at 870 MHz Sapphire Patent Pending Black Diamond Choke Quiet and Powerful Dual Slot Vapor-Chamber Cooler, Under 20 dbA in 2D Operation, under 30 dbA in 3D Operation before 85 degree ℃. Solid Capacitors 2 GB of GDDR5 memory

SAPPHIRE VAPOR-X HD 4890 1GB GDDR5 PCI-E Sapphire Patent Pending Black Diamond Choke Quiet and Powerful Dual Slot Vapor-Chamber Cooler, Under 20 dbA in 2D Operation, under 30 dbA in 3D Operation before 85 degree ℃. Solid Capacitors 1 GB of GDDR5 memory DirectX® 10.1 support

SAPPHIRE VAPOR-X HD 4890 1GB GDDR5 PCI-E OC Factory overclocked at 870 MHz. Sapphire Patent Pending Black Diamond Choke Silent and Powerful Dual Slot Vapor-Chamber Cooler, Under 20 dbA in 2D Operation, under 30 dbA in 3D Operation before 85 degree ℃. Solid Capacitors 1 GB of GDDR5 memory