It's fairly simple to overclock the B&W, but just make sure to only do it 50Mhz at a time, just make sure that you don't blow your processor, and to keep track of which speeds work.

You can usually bump the speed up about 50-100mhz.

Mine was originally a 350Mhz model, and I bumped it to 400Mhz with no problem, but when I tried 450Mhz, it would just chime and not boot up.

YMMV though, as I might just need to add a fan, and new thermal paste.