Right...I've sorted it myself!!!! (and there was me saying i know nothing about computers!!!)

Chip settings are fine.

See below:

The way the HT works, is that the base clock is 200Mhz. The multiplier is 5,
so that equals 1000Mhz. It is capable of a simultaneous 1000Mhz up and
downstream, so the total combined speed is 2000Mhz.

It's using this Hypertransport thing that splits the up and down stream so
you double up the 1000Mhz.

I know mine is set to 200 x 5 = 1000 x2 = 2000Mhz