Strange a64 3200 problem

[lil old me]

Had this system for a while

a64 3200
kingston pc 3000 (bh5)
9800se softmodded
gigabyte k8n non pro

but it would never overclock very well, could get 2319mhz 3dbenchable but that was it. Today I got a new psu, tagan 480w which is meant to be very good. Rails are all fine.

If i use the 9.0x multi i can do 261htt 213 mem and it runs 3dmark fine. But if I use 10.0x i cannot bench 2340 (234 htt)

Also running 1:1 I cannot go above 225. This may be a ram limitation, i have no voltmods but i thought 225 would be attainable with 2.8v.

Temps are fine 44C load @ 1.7v.

Also (but less important) even using 2x htt I cannot go above 280mhz at all, I have read about people getting well over 300 at 2x.

Can anyone help?

Thanks L