Do you guys set up a dedicated scratch disk for photoshop? And is it only useful if you are doing very big projects or would it help just a normal photo-editing workflow? I have a samsung 840 pro ssd that I have my operating system and photoshop. And I have a red hdd for storage, but that leaves me with 2 empty msata bays in my laptop, so I was thinking of getting a ssd for one to use for a scratch disk for photoshop. Basically I am looking to get the pictures resolved as fast as possible (when importing a batch of photo's I mean) and have the actual ps processes as speedy as possible.