I have been clocking this for the past week or so and have managed the following clocks
3.72ghz 8x465 FSB at 1.4v
It is definitely an FSB wall that is holding this back as voltages on north and southbridges had to be increased to remain stable from 450 FSB upwards.
It seems also that temps are wrong as in some of the E series chips as this idles at 40c+ on watercooling.
They have some instock at £221 at ebuyer!!!!!!!!