I'm new and my opinion won't mean much to anyone but as far as I'm aware and I'll be looking into this momentarily and editing my comment if I'm wrong, you can still 'defrag' a SSD but it's a much different meaning :P Such as creating a RAM disk if you have a nice amount of RAM you create a RAM drive for caching and temporary internet files, if you have another drive you can move your Windows Temporary Files to it, you could use the ram for this too but that would take a lot of space and depending on the games you play you'll need your RAM more than the small performance boost. Disable Windows from creating a Paging File on your SSD as well. Not all SSDs support Trim so it's a good idea to make sure it's running on your PC and I guess you could call this optimizing or tweaking your performance but in my mind it's still 'defragging' because you're reducing the amount of clusters on your SSD as well as the amount of junk. :P
