There are some pre-installed packages around;
Gigabyte's i7 version or Velocity's simpler model.
http://www.velocitymicro.com/wizard.php?iid=239
Not so cheap with its $600 tag, but nearly ¼th of mac mini {in size}.
Looks promising…
~ Ender Nafi
~ · Keehuna Studio
~ · Sorcerers of Design