Question on FSB and RAM

[Geocross]

Hey all - question for ya. If I buy PC1600 RAM and a 1.2 ghz athlon(200mhz), and I change the FSB to 133, does that mean my RAM will be running as if it was PC2100 RAM? I don't see why I don't just go this route (I'm going to get the Iwill KA-266 Board). I can get 512!!!MB of PC1600 for a a few buck more than 128MB PC2100, plus the processor will be cheaper than the "c" versions that are still trickling slowly into the market. What do you think?

 

[Geocross]

Also, is my heatsink adequate enough to do this type of overclocking? Double ALso, I'm getting crucial RAM (mushkin doesn't appear to have PC1600)