No multi GPU support, not as fast as FCPX

For some reason Compressor does not utilize multiple GPUs for transcoding, unlike FCPX. If you have multiple GPUs (like the Mac Pro) FCPX will utilize both while transcoding in the background, speeding things up by a factor of nearly four over Adobe Media Encoder and others. It’s perfectly reasonable to expect Apple to impliment this in Compressor as well but they have not so you will find no speed benefit if you have multiple GPUs. For shame!

SwithDrawn about Compressor, v4.2.2