I'm not buying a 2013 nMP in 2017 (a month away). So here's what I did starting about a year ago. The result was a MP that's as fast as a 12-core nMP, and faster in disk read times and boot drive speed. First let me say that I need extreme multithreading capabilities that only Xeons can provide. I bought a mint used 2009 4,1 MP. $700. Here are the modifications I made. 1) Upgraded the firmware to 5,1. 2) A pair of x5690 dual hex core (12-core) 3.46GHz CPUs and de-lidded them. $400 3) 96GBs of RAM (16GBx6). $600 4) 512GB Samsung SM951 with the Lycom PCIe card and installed it in slot 3 as my OS/apps boot. 1500MB/s reads. $425 5) Squid m.2 carrier card in slot 2 and installed (4) 256GB SM951 in a RAID 0 giving me 5700MB/s reads. $800 6) (4) 4TB HDDs internally. $500. Graphics card with an AMD R9 280x. $200 7) USB 3 card with four independent lane controllers. $129 Geekbench score - 32000 Read speed from the Squid RAID - 5700GB/s Boot time from SM951 - 10 seconds Total cost = $3.500 So I bought a second 4,1 2009 MP and did the same exact upgrades. This is a MIDI mockup rig that needs every bit of CPU cores and speed, large amount of RAM, and the fastest I/O possible for the sample drive. The two MacPros are in a host/slave environment. These upgrades could extend the useful lives of these 8/year old MacPros. However, I'm very unhappy with Apple's direction. I'm highly invested in OS X/macOS software and training. Some apps have Windows versions but not all. I'm going to begin a social media campaign asking for Apple to take care of the pro user by providing bi-yearly Mac Pro updates, or demand Tim Cook's head. I've had enough of Apple taking away products for no apparent reason. And I'm going to do something about it, and hopefully very loudly. Until then, if you want a Xeon based Mac, try my formula above. You won't be disappointed. Even with a few weeknesses (internal SATA II, 1333MHz RAM, no TB) they're screamers.