XFX CORE RADEON 7870 1000MHZ 2GB GDDR5 GHOST THERMAL WITH QUADHEATPIPES, DUAL MINI DISPLAYPORT, HDMI, DUAL DVI. PCI-E 3.0, 256 BIT MEMORY BUS, 4.8 GHz MEMORY CLOCK, 1.0 GHz GPU CLOCK, 1280 STREAM PROCESSORS.