XFX RADEON Double D R9 280X 1000MHz BOOST Ready 3GB DDR5 2XmDP HDMI 2XDVI Graphics Cards R9-280X-TDFD Features XFX Enhanced Double Dissipation Cooling Core Clock: 850Mhz, Boost Clock: 1000Mhz, Memory size: 3GB, Effective Memory Clock, 6.0Ghz, Memory Interface 384-bit, Memory Type: GDDR5 XFX Lifetime Warranty - Registration within 30 days of purchase required Please watch the Instructional Video before use.