試試看 Linux Mint 17 Xfce，而且17是long term support (LTS)版
不過如果連Home Starter 都跑不順吧，那的確是有點慢。

http://blog.linuxmint.com/?p=2656

Make sure to read the “Release Notes” to be aware of important info or known issues related to this release.

System requirements:

x86 processor (Linux Mint 64-bit requires a 64-bit processor. Linux Mint 32-bit works on both 32-bit and 64-bit processors).
512 MB RAM (1GB recommended for a comfortable usage).
10 GB of disk space
DVD drive or USB port


如果還是跑不大動，那試試 LXDE
http://lxde.org/
http://lxde.org/zh-tw/lxde/