You can also use flash memory like a thumb drive or SD card for your paging file. In the case your system uses or "swaps" into the swap file it's faster than HDD's. Microsoft calls this technology "ready boost." Here's a quick google link on how to set it up
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&es_th=1&ie=UTF-8#q=set%20up%20ready%20boost&es_th=1