I have a 2012 Mac Mini with an i7 processor / AMD Radeon HD 6630M 256 MB and needed to transcode a video from 1080p60i to a smaller size. I started off with compressor and it told me it was going to take 4 hours. I did not deinterlace the video + one pass so as to make the encode time quicker. I then decided to see how long Media Encoder CS5.5 would take, also about 4 hours. I then made a copy of the preferences file from media encoder and moved the footage over to a MBP 2010 with a measly 330m GT graphic card, also dual core I7 same speed. To my surprise it said it was going to take 2 hours! Ok same processor and worse graphics card and half the time, ok that works for me. Now here the kicker, I have a horrid i5 Lenovo laptop that I seldom use, the trackpad is soooo bad but she's a great machine for the price and sometime you have to go over the the dark side. I decided to run my little experiment with Media Encoder CS5.5 and the same footage on this machine, it has a 512Mb 310M Gt card and low and behold it took 50 mins!! And it's a blinking i5 processor. So how come my mini is so slow compared to the MBP and why, oh why is the i5 4x quicker. I am not aware that CUDA works for encoding at all in Media Encoder 5.5 so what is going on here????