I was wondering if I move my Unity3d project from HDD to SDD, how it will improve performance? There are two possible cases. First, if you already have your system  (with Unity3d editor) installed on SSD (I hope you do) and a second case is when you have only HDD (I hope you will buy SSD asap). To figure that out I made some simple tests I took a first computer with OS and programs installed on SSD and run all tests on a project which was located on HDD, then I moved the project to the SSD drive...