I think Im through with testing this CPU - Im well happy with the end result - 490x9 = 4410. Spent the whole day testing the stability with prime and all looks good. Got 490FSB stable by adjusting the NB and CPU clock skew. Could push a touch further but cant be bothered!

Its the Best CPU ive had to date.

CPU 1.40
NB 1.45
VTT 1.48
DDR2 980