![]() ![]() ![]() The Mac Pro Xeon CPU is considered “workstation-grade,” and doesn’t provide this hardware acceleration. One of the speed advantages of the iMac is that it uses an Intel technology called “QuickSync.” This is a special processor “engine” inside many consumer-grade Intel CPUs that accelerates H.264 compression for certain encoding settings for example, when compressing for Apple devices, QuickTime or MPEG-4 movies using the H.264 codec. Select the system that meets the needs of the compression tasks you need to accomplish. Different compression tasks yield significantly different completion speeds. If video compression is your primary use for a new computer, you may be better off buying a top of the line iMac. When running Apple Compressor 4.1 as a bench-mark, the new Mac Pro is faster for some compression tasks and significantly slower for others when compared to a recent model iMac. The purpose of this test was to judge compression speed, not image quality, in an effort to compare these two systems though compressed image quality seemed comparable between the two systems. What I learned surprised me, as you’ll see in this article. There are a variety of excellent performance reviews of the new Mac Pro on a variety of sites, so I decided to compare the Mac Pro with an iMac from a different perspective: video compression.
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