In another thread from a senior member whs : I absolutely recommend to put the OS on the SSD. And leave all system files on the SSD. Just get rid of the hiberfile (the command is powercfg - h off) and reduce the pagefile to 2GBs. And if you got SP1 via the update cycle, delete the backup files. The command is DISM /online /Cleanup-Image /SpSuperseded. All this together saves you about 18GB of SSD space (assuming 8GB of RAM). But, I like to hibernate my computer all day long. I only shut it down at night. Though this seemed to speed up logging into windows with the regular 7200 rpm HDD, I do not notice any benefit with the new SSD. Both resuming from hibernation and booting takes about the same time. Should I get rid of hiberfile ? Then I guess I will have have to shut down the computer everytime ?