2015 MacBook Pro: Search Speed
Authorized Apple dealer B&H Photo loaned MPG the Apple 15.4" MacBook Pro Retina (Mid 2015), 2.8GHz / Radeon R9 M370X / 16GB / 1TB, the configuration MPG recommends for power users, photographers, videographers, etc. Save money on AppleCare too.
Searching is faster on the 2015 MacBook Pro, cached or uncached.

2015 MacBook Pro vs late 2013 MacBook Pro: grep search