TWO (2) ​AMD RADEON ™ HD 6990 GPUs with ENGINE CLOCK 830 MHzMEMORY 4GB GDDR5MEMORY CLOCK 1250 MHz (5.0 Gbps GDDR5)MEMORY BANDWIDTH 320GB/s (maximum)SINGLE PRECISION COMPUTE POWER 5.10 TFLOPsTERASCALE 3 UNIFIED PROCESSING ARCHITECTURE.

Comes with Crossfire cable to run in dual card setup.