^right.. Your FSB: DRAM is maybe has set it fixed 3:10 in BIOS. Changing this setting will affect that ratio. The choice, however, is different in each BIOS & Mobo so I can't tell you what value you choose. Try experiment with all possible values and sees them in CPU-z.
^Careful! The OP is running DDR3; with those voltages and timings, he could damage his ram.
@OP: Look up your ram on the manufacturers website and see what the specs are. You may want to loosen the timings a little for OCing, but you don't want to raise the voltage by more than ~.01 of the default. Depending on how far you want to go with your OC, set your memory clock accordingly (eg While OCing your cpu, you want to focus on its stability first, so you want to make sure the ram never goes over spec--when your cpu is at its desired/stable level, you can bring the memory up as high as that will go: see an OCing guide for more details).
When you set it to 667, it will only actually be 667 if you leave the CPU FSB at stock settings. You need to set it to the next lowest setting available, this way it will multiply the new, higher FSB against a lower setting so that it is not run out of spec.