what doc says, but whereas he has PHotoshop on his SSD, with caching you can change what is on your SSD on the fly so you could have Photoshop on and then unload PS and run BF3 from the SSD, it will always be installed on your SATA but will cache itself to the SSD (you can specify it to cache) the problem is that as it is cached it goes off after you turn the computer off/use something else, so the every time you load up a map it will take a SATA amount of time, but after that, other maps will load at SSD speeds if you follow.