Not being familiar with the Core2Duo range, I was wondering if the £15 price difference between the 2 chips was worth paying for the extra performance, considering that I'm not averse to overclocking, provided it's easy and failsafe.
On another note, is the 6320 worth the extra £15 again on top of the 4400, if the PC is to be used for general internet/e-mail/occasional gaming.
I will probably be adding a P5B basic and 2gb of TwinX Corsair memory at 4-4-4-12, whatever that means.