Need help with overclocking, System Memory Multiplier question

I wrote down notes from the some guides, and it says to make the System Memory Multiplier equal to or less than the rated speed of your RAM. My ram is 1066, so I try to set it to a number closest to that?

So if I have my CPU at 2.5ghz now, which is 200 FSB, I would set the SSM to 4.00A so (200FSB X 4.00 = 800) and 800 is the closest I can get to 1066?

I have a Gigabyte mobo and E5200 cpu if that helps.

Equal to or less than sounds pretty succinct to me. There are many articles on various wikis explaining multipliers

What kind of motherboard do you have?Snotweasel530

That RAM is not on the QVL. Whats the auto setting have it set at? Some boards have problems with setting the correct voltage for certain sticks. You may need to modify the voltage.