My 2013 Mac Pro (trash can) came with a 1TB internal SSD which is now limiting given that I process large video files that need a lot of scratch space for rendering. I have two options. One, upgrade the internal SSD to 2TB. OWC offers these at around $1400. The second option is to boot the Mac Pro from a 2TB external SSD connected to the Mac Pro via Thunderbolt. This solution comes in at around $600. Are there any performance negatives with the second option? Any other pertinent remarks will be appreciated.