You'd have to check out the specs on the RAM in question to determine whether or not two sticks would be preferable to one.
I'm not a hardware guy but that gets into what speed the RAM runs at, in addition to specs on the motherboard like FSB speed.
There's a ton of info available on this online, far more than I ever cared to learn about, frankly. If you scratch the surface about a week's worth of work further on the subject, you'll know far more than most do, even those who work with the stuff.
Also since you're in comp. sci., building a computer is a great exercise. I recommend a good book on something relating to the A+ cert. before you try it, lest you do something like find a CPU that isn't compatable with a given motherboard.
Been a while since I put one together but I learned a ton in the process. Such as the simple fact that hacking together a new computer in a salvaged case can ground a good motherboard and lend all the symptoms of a wholly defective one.
So, sorry I can't give a straight answer to your question (good one, by the way, I'll have to look into it). Hopefully I helped with my input, however.
Also, take a look at the challenges. There's a lot of good stuff in there.
"I'm going to get into your sister. I'm going to get my hands on your daughter."