I have a 2008 Mac Pro (2X2.8 quad-core, 6GB RAM, ATI Radeon 2600 256 MB, 3TB internal RAID) and its time for an upgrade. Machine is heavily used for FCS 7 video production. We film in 1080/60i AVC-Intra 100 and multi-cam edit in FCP. After import of footage, we export to Offline HD JPEG using media manager straight into a Dropbox folder. Media and FCP project gets propagated and our editor who now works from home on his iMac editing proxy video. We use 4 cameras most of the time minimum, sometimes up to 8. Graphics are pre-built in AE on another machine and just layed in timeline. After the edit is complete, he saves the project file in the dropbox, we open in FCP, preview in proxy video on our machine, make corrections if needed, and then reconnect media to original high res files with graphics once complete. The final sequence is rendered out to XDCAM and Apple ProRes 422 HQ for broadcast. We then share the finished sequences to YouTube straight from FCP. This is the workhorse machine workflow. We literally pound this machine with renders, exports, and YouTube uploads simultaneously. I know I could get away with a loaded i7 iMac with Fusion HD or SSD, as much RAM as possible, and Thunderbolt Promise RAID Pegasus R6 with 12TB. Disk speed is fast enough to playback in real-time, actually faster than what I have so I would expect better results. On top of that, couldn't I buy a few Mac Mini's and use QMaster to spread rendering or workload amongst various machines? What is my bottleneck? Processor speed, max RAM space, graphics memory, etc.? I want to render, export, and compress fast. I also want more real-time effects and faster playback with multiple streams of video. Thanks in advance for your advice.