I have this ram (OCZ3P1600LVAM4GK) running in my Crosshair III but i can't get it stable at DDR1600 7-7-7 with just 1.65V.

Prime blend craps out after one minute, with 8-8-8 timings it runs fine, so does DDR1333 6-6-6.

Giving more volts seems to help, with 1.7V it runs about 5 minutes before it errors.

I haven't tried more volts but i'm reluctant to give over 1.75V as it is supposed to work at just 1.65V.

Any suggestions anyone?