I have: Mac Pro 4.1, Early 2009, 2.66Ghz quad, 500Gb HD. Geekbench 3 score 1896 single-core, 7245 multi-core Mac Mini Late 2012 2.5Ghz, i5, 500Gb HD. Geekbench 3 score 2569 single-core, 5324 multi-core I'm wondering which to use in my main system. I use Microsoft Office a lot, and run Audirvana+ music software into my DAC via USB. I also watch freeview TV and YouTube a lot so streaming is important. With this kind of software and usage, which will be faster and/or more efficient? The Mac Mini is USB-3 rather than USB-2 and no doubt other internals have been upgraded.