Originally Posted by Jon
From what I've read only the microsoft ahci driver passes trim to the drive in windows 7. Unfortunately the only way I can think of to see if trim is working is to benchmark the drive, then run the trim from the toolbox and compare the results. If performance goes up then it needed a trim and therefore wasn't being done by the OS. But I'm trying not to worry too much in case I drive myself crazy with it!
With the ms ahci driver the system takes 2x longer to boot :/
I haven't noticed a performance drop when benchmarking yet so hopefully it's ok.