I want a quick drive though - Not one of them standard 5400rpm ones
Compared to the internal HDD, I get quicker loading times with games loaded in the Portable HDD. Only a few seconds but it's noticable. Games like Destiny, Smite, TES:O and FarCry, loaded quicker than internal.
Not sure if the 7200 will make that big a difference, besides, can 1 USB port power a 7200rpm portable drive? The ones I've converted for backup drives tend to require 2 USB ports for power.
Defeats the point when you're limited by the Xbox One's default 3 USB ports.