X9100 not hitting full clocks?

XoticPC advertises the X9100 3.06GHz CPU as being capable of overclocking to 3.53GHz. I've never been able to hit this speed, and max at 3.45GHz. I know its only an 80MHz difference, but spread across two cores and in an 8hr render, This could equate out to 10-15minutes less on the render.

Any ideas why I cannot OC to 3.53 GHz? Or is this just wrong and the correct number should be 3.45? Frequency recorded using CPU-Z, RealTemp.

F*M=S
Where F is equal to the Front Side Bus, M is equal to the Multiplier, and S is equal to the total speed.
266 * 13 = 3458

 

are you using rmclock?

I think the multiplier should be 13.5 as the default is 11.5 and i thought the OC options were x1 over and x2 over, but if rmclock is handling your cpu it can't understand half multipliers. What is the OC option called and set to in the bios?

 

Im not sure what the OC option is called; can't restart since I"m in the middle of a render.

I only use RMClock to handle undervolting. Even without RMclock running, the clocks are still the same.

The default is 11.5x. The first stepup in the BIOS is to 12x and the second to 13x; although it calls it 1x and 2x, so technically I should be running at 13.5x.

However:
266x13.5=3591; 60mhz higher than the 3.53 claimed.

 

***bump***

 

I get the same frequency on my X9100 as well, not using RMclock either.

 

No ideas from anybody? Perhaps Justin might have some insight.