Thank you both/ I actually do have an SSD as the boot drive. A Samsung 850 Evo 500GB. I wanted to replace the original HDD with a compatible one. Wasn't sure how compatible it had to be. Thank you both for the advice. I will primarily use it for storage and for games that I'm not concerned with how fast they load. I mainly have World of Warcraft installed on the SSD. Not really a fan of SSHD's. I will consider one now though. Not sure if I really need one unless I start putting a lot of games on it. I will probably buy a 3.5 inch 2tb+ unless someone can steer me with a convincing suggestion towards a SSHD of comparable size.