ASUS GeForce GTX 660 DirectCU II Top OC Edition Review @ Hi Tech Legion
 

The ASUS GeForce GTX 660 DirectCU TOP graphics card pushes the boost clock speed from the reference speed of 1033 MHz to 1085 MHz. The ASUS GTX 660 utilizes the Nvidia GK106 GPU core and features 2GB of GDDR5 memory. Memory is clocked at 6008 MHz effectively and supported by three memory controllers creating a 192-bit memory bus. The GK106 core features five SMX units housing a total of 960 CUDA cores and 80 texture units. ASUS further refines the GTX 660 by applying a custom cooling solution, utilizing direct contact copper heatpipes to dissipate heat more efficiently. On top of the custom cooling solution is the DIGI VRM+ power design that ASUS uses with their cards, providing better voltage control and stability.

http://www.hitechlegion.com/reviews/...0-directcu-top