9x333, 8x375, or 7x428 on a Q6600 - Which is faster?

[LUH3417]

Now, what about the memory multiplier? Should I run my e6600 at 320 FSB with a 2.5x memory multiplier (2880Mhz), or 333 FSB with a 2.0x multiplier (3000Mhz)... and why? I still can't find a good explanation of the memory multiplier.

I have what I think is a common problem with the e6600 CPU. It will only overclock to FSB 333 x9 = 3Ghz. (stock is 266 = 2.4 Ghz). And the problem is this: if I set the memory multiplier to 2, the 800Mhz memory I bought is wasted; I could have just bought 667 memory.

Some motherboards support a multiplier of 2.4 (or arbitrarily flexible?) which would be ideal, but this Gigabyte GA-965-DQ6 only offers 2.5, which means the memory needs to run at 833 though its only rated for 800. I suppose many memory can handle that memory OC but my question still is, assuming we're "CPU bound" on the overclock and can't push the FSB over 333 (edit: I should say, push the CPU past 3Ghz, whatever CPU multiplier x FSB is used), is there any performance difference between a memory multiplier of 2.0, 2.4, or 2.5? And if so why? Does the memory race ahead and load up bytes ahead of time with the higher multiplier? Would 1066 memory be even better letting me use a multiplier of 3.0? Or, if the overclock is "CPU bound", should most e6600 users just stick to cheaper 667 memory?