NVIDIA GeForce GTX 660M Mac Edition technical specs and benchmarks
NVIDIA started GeForce GTX 660M Mac Edition sales 1 April 2013. This is a Kepler architecture desktop card based on 28 nm manufacturing process and primarily aimed at office use. 0.5 GB of GDDR5 memory clocked at 5 GHz are supplied, and together with 128 Bit memory interface this creates a bandwidth of 80 GB/s.
Compatibility-wise, this is MXM Module card attached via MXM-B (3.0) interface. An additional none power connector is required, and power consumption is at 50 Watt.
It provides poor gaming and benchmark performance at 1.27 percent of a leader's which is AMD Radeon R9 390 X2.