mac pro's speed is not fast RMBP 2015。WHY···？

[大小= 4]Hello~ i am using An external Thunderbolt hard disk. it was pretty fluency for edit 4k video of FCPX when 2015`s 15 RMBP. also including speed up is very well. but it was not working so well when i was using MAC PRO (Xeon E5-4Core.D700 GPU) when 2013. it was the same Thunderbolt2. i have no idea whats wrong, i need your help!
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Can you tell us more details about what operation in FCP X is slow on the Mac Pro? Is it moving through the timeline? Applying effects, and if so which ones? Is it exporting to an output file, and if so what codec?

Also is the material you are editing in a camera native format, or proxy or optimized media? If camera native format, what resolution, codec and camera type?

Outside of FCP X you can also test the disk performance using BlackMagic or other utilities: itunes.apple.com/us/app/blackmagic-disk-...st/id425264550?mt=12 That will help determine whether the Thunderbolt disk drive is involved in the slow FCP X performance.

Also a simple thing to overlook is that Spotlight will need to index all of the external drive on the different system (MP) so you need to give it some time.
Not sure this is it, but easy to miss.

Hope this helps, Greg