4.1>5.1 cMP 3.46GHz running Yosemite 10.10.1 with nVidia drivers and GTX 770 2GB Titanium cooler EVGA version.
Export time : 116 seconds.
I have a thermal take 450w
internal 5.25 PSU sitting here waiting for the dual R9 280x's to turn up... Flashed and modded for Mac, will post results once set up... hoping the time will come down but a large amount!!