UPDATE // I thought it'd be useful if I stick a link to the Spreadsheet here at the top of the thread: Last updated - 26th Jan 2014 Latest Test Mule Spreadsheet Some of you may have seen my recent article about Lightroom on the New Mac Pro. ...... If you're interested in running the exact same tests, using the exact same images, I've now made the 'Test Mule' folder available along with a Procedures document explaining exactly how everything was done. All the details here: Test Mule - Benchmark Your Machine If you run the tests, I'd be grateful if you'd drop me a line with the results. It'd be good to get some sort of comparable database going from a Lightroom users POV. There's so much out there at present about the nMP but the focus (unsurprisingly) has been on video work. Hopefully this will be of some use to photographers.