Looks like dual channel only gets rid of the odd missed cycles where ram is accessed when the bus isn't ready (dual channel, so if one isn't ready during a bus cycle the other is, that's how I read it). So I think that's very little benefit (a few missed bus transmits? Drop in the pan compared to the big picture).
I think you're good Grits.
I'm starting to worry, however... Turns out my stick of 512MB is CS 3. I've heard people griping about how they didn't like such high ram latency so they went with 2.5 or less.... But then part of me thinks "It's so infinitesimally small a delay, how much will I even notice?!" So I don't know what to expect when I put this sucker in my new case*.
*: If/when the new case ever gets here!