Hi
I running at 1:1 with my CPU 4400 with 1.48v @242 X11 3,3,3,8, 1T at 2.67v.
To run at ddr 600 with this memory I think you will need to relax the timings, or use a memory divider.
I would use a divider, if I was going higher than 250
When I played around with the voltage I found more stability problems
Simon