ASUS DirectCU II 28nm Graphics Card HD7970-DC2-3GD5 20% cooler and 14dB quieter performance with ASUS exclusive DirectCU II thermal solution ASUS DIGI+ VRM technology with 12-phase Super Alloy Power for precise digital delivery and enhanced durability VGA Hotwire hardware overvolting and GPU Tweak software tuning. One card drives up to six screens with AMD Eyefinity 6: four DisplayPorts and dual DVIs provided! Engine Clock 925 MHz.