short answer,no. You woud need a FSB of 800mhz to reach 1:1 with 1600mhz ram.
With slower ddr2 ram a lot of people went 1:1 for a nice performance gain, especially with a FSB of 400 and ddr2 800mhz ram. There's no point in tying with your ram. you might as well run it as close to rated speed, and enjoy the higher bandwidth.