I am using a Asus Sonic Master Netbook during commuting or traveling. This is a notoriously underpowered piece of hardware (2GB RAM, 1.1GHz Celeron CPU) but it is rather handy. Unfortunatly is became over the time rather slow.

After i have replaced the 300GB disk by a 210GB SD RAM disk the thing has become  even with a memory utilization of 99% resonably fast for its purpose.