This tool discovers you have Windows 8 installed on and SSD and adjusts the appropriate system settings (see below). Whether you installed Windows 8.1 on an SSD or moved Windows 8.1 to an SSD, or upgraded from Windows 8 to 8.1 all that is required is to run wisat. When I came back to the machine over an hour after that I rebooted and found that Windows 8.1 had optimized itself for SSD’s. On the same day as install and after installing all drivers / Windows Updates I let my machine sit idle (all power options off). On a clean install I have observed that WinSAT will run by itself eventually. (When I say wait a few minutes I mean let it sit idle for at least 5 minutes.) To optimize Windows 8.1 for an SSD you only need to run WinSAT, reboot, wait a few minutes for it to change the settings (just to be sure), reboot.
With Windows 8.1 the WEI score is no longer displayed and if you have upgraded to Windows 8.1 WinSAT isn’t run. Under Windows 8 you could tell that WinSAT had been run because you had a visible WEI score in your system properties. It does so by running the Windows System Assessment Tool ( WinSAT for short), detecting you have an SSD, and setting the appropriate parameters for an SSD. Windows 8 has always optimized itself for SSD’s. Windows 8.1 may require user interaction to optimize SSD’s depending on how you’ve installed it.
