I always thought processor's FSB was the limit of how fast the RAM could be. However, while configuring a Lenovo laptop, I see options for RAM that's faster than the CPU's FSB
CPU = Intel® Core™ i5-560M Processor (2.66GHz, 3MB L3, 1066MHz FSB)
RAM = 8 GB PC3-10600 DDR3 SDRAM 1333MHz SODIMM Memory (2 DIMM)
Best Answer
In short, no, some benchmarks may reveal a small advantage, but its nothing you would notice in the real world.
http://www.overclock.net/intel-memory/129552-ram-faster-than-fsb-better-performance.html
This answer does not include overclocking the cpu fsb, which is another subject all together.