Hi, I have an MSI Wind netbook and the manufacturer has built in 3 levels of overclock in the bios that you activate via a hotkey, none of which it guarantee's to work
I have successfully used up to level 2, if I remember correctly I gained approx 15%
However I never really noticed a difference in performance using it as intended ie: A NETBOOK lol
I'm also lucky in that the MSI supports 2GB ram
. But as previous posters have said ssd is biggest improvement after ram.
A ram upgrade tutorial for aspire one How to upgrade an Acer Aspire One netbook's memory ? reghardware
You will also find some on youtube
Hope this helps