FSB and memory speed

You don't understand this correctly. Quad pumping has nothing to do with the number of cores. Back in the old days (pre P4) you could only send one bit of information per clock cycle. Meaning if your FSB was 100MHz, then you could send 100million bits of information per second. (I think the math is right.) When the P4 came out with its long pipeline, they needed a higher FSB. Instead of increasing the FSB, they "quad pumped" it, allowing 4 bits of info per clock cycle. Now that 100MHz FSB allows for 400million bits of info per second.

So looking at the specs for the Q8200, its a 2.33GHz quad core CPU running on the 1333MHz (effective) FSB. 1333 / 4 = 333 actual clock speed. The memory would run at twice this speed, so you need DDR2-667 ram for stock operation. You can run faster ram by using a different FSB/RAM ratio, but that 1066 or 800MHz ram will slow down as soon as it hits that slow 333MHz FSB. I would get DDR2-800 ram anyways, as its cheap, and allows for overclocking later if you choose to do that. Don't bother with the DDR2-1066.

He just wrote that, it has nothing to do with number of cores, you divide by four because thats the number of bits per clock cycle. Bottom line is: your cpus base clock(and actual FSB speed) is 333Mhz. Believe it, my dual core cpu has quad pumped fsb as well. And youre right about the ddr2, 1066 memory runs at 533Mhz