Stacked vs. non-stacked 2GB RAM

[Dave00]

I've been looking to add some RAM to my new MacBook (revision B). I've always had a policy of maxing out the RAM, since that seems to be the most bang for your buck as far as performance. Anyway, of course I didn't buy the Apple installed 4GB, as that would cost nearly as much as the machine! I've been looking at places to buy RAM, and I came across a term I wasn't familiar with - Stacked. According to the RamJet site, stacked 2GB ram sticks run hotter and use more power. Problem is, no other site than RamJet mentions anything about stacking. And, all of the sticks I've been able to find seem to take 1.8V, which suggests to me that they shouldn't vary in power consumption. Of course, the RamJet sticks are considerably more expensive. Any thoughts?

Dave

 

[Draddy]

Doesn't stacked mean all the RAM chips are on one side instead of both?

If so, I could see how it could use more power in a micro level, but I don't know of anybody who has made that claim before.