i have a hp laptop with 4 gb ram and 500 gb hdd. i want to play my virtual machine smoothly without any lags. For that what should i upgrade 8 gb ram or ssd. If ssd i have sata1. Can i get sata3 6Gbs and get the maximum speed ? how can i get the max speed of sata 3 in sata1 ? pls hlp me guys