Moved memory into black slots Eva200's pot black confirms clunk's earlier findings.
think it's given me a bit more headroom not confirmed yet
decided to give transaction booster a test:-
Settings:-
9x400@2:3 = 1200 Memory 5,5,5,15 2.35v
1) Transaction Booster Auto
http://homepages.nildram.co.uk/~chsm...2x32m%20Pi.JPG
1) Transaction Booster Enabled=1
http://homepages.nildram.co.uk/~chsm...20tboost=1.JPG
Seems to give around 2% performance boost.