Even if the cpu was running 1066 / 1333 the ram could run at 1600 by changing the ratio in the bios.
As far as the ins and outs of bottlenecking go I'm sure someone else will be far more help than me.
Ok thanks nobody else know??
Intel only recommends 1066/1333 Mhz for Ram speeds, but the processor can easily handle higher speeds up to 2000 Mhz, but even with the faster Ram you usually don't see any increase in performance since the processor is not bottlenecked by Ram speed.