Well I've gotta say I'm quite chuffed. Although I'm only running on 256mb of ram atm (had to get rid of a stick that was holding me back) I'm now running 100% stable at 11 x 195 = 2.15ghz. That's pretty damn sweet, especially considering I can't up the voltage for cpu/ram/anything as there is no facility for it.
Running nice and cool too with a quiet panaflo fan. 42C idle and it doesn't go much above that when loaded.
Very happy with that
(Now all I need is another stick of ram that'll do those speeds)