Your best bet would be 97 x 6
Would be 582mhz and up the voltage to 2.4 for stability
with 2.3 it prone to crashes
Cpu runs very cool about 40C average MAXimum 44C
YOu can try for 600, but it also running it over it stability speed
with V2.5-2.8
I had no success, even tried
2.9, 3.0
It was about fried.
So I gave up.