Sorry man...you're wrong on that.
With DDR ram there're a couple options you have. You do want the fastest rate ram your machine can handle. However, if you have dual channel (if it says DDR2 compliant, then, you're ok) you'll want 2 sticks instead of one. Paired ram is MUCH faster than a single piece with. Ok...not ridiculously, but it is.
The idea is that the timing system of the 2 pieces was tested in the factory and it was noted that their speed was matched within a certain latency. That'll give you better performance.
Think of it this way, you're trying to write a gig of data to a location. Would you rather try to write 1 gig to 1 hard drive or have it write half to 2 discs at the same time. Theoretically, it'd take half the time to write to 2 discs (this isn't anywhere near true, but that's the purpose of raid 0).
It's the same idea with paired DDR ram. You're attempting to minimize any bottlenecks. So, if you can store half your stuff on one chip and half on the other with a good ram controller you're not only going to access data faster b/c it's split apart, but you're changing the actual abstract location of the of the bottleneck and taking it off the actual bus speed of the motherboard.
Did I make sense?
2 billion dollars...sir, I'd handle my grandpa's balls for 2 billion dollars.