A fast RPM hard drive if you need extra space around your laptop to store and work with. It works perfectly with no buffering if you are retouching and editing big size raw photos in pro handles such as PS or Lightroom or Capture One Pro. I have filled the hard drives more than 80% of full capacity and I don't feel any slow down on speed(Convenient hard drives slow down when the size reaches to the full capacity). However, the price is a bit expensive compared to other brands 4TB desktop HDD.