is there a way to tell trim is running
?
I don't think you can tell if it is actually running, only that Windows 7 is configured so that it should run. At the command prompt type:
fsutil behavior query disabledeletenotify
DisableDeleteNotify = 1 (Windows TRIM commands are disabled)
DisableDeleteNotify = 0 (Windows TRIM commands are enabled)
For TRIM to actually happen you need to ensure it is also supported by both your drive (the new firmware) and your storage controller driver. At the moment only the standard Microsoft driver is confirmed to pass TRIM from the O/S to the drive. There are rumours that future Intel drivers will support TRIM, but even the recently leaked Rapid Storage release does not support TRIM.