The dual channel vs. single channel performance debate was really intriguing me, so I headed down to the local Frys and picked up their last two 1 GB sticks of RAM (Mushkin #4700769, $99). I ran my own little benchmark using DVD2OneX. I encoded a DVD movie (previously decrypted and ripped to my hard drive Mac the Ripper) with DVD2OneX and measured the time it took to go from 0 to 50% complete. With 1.5 GB RAM (Single-Channel) it took 15 minutes and 21 seconds to encode from 0-50%. With 2 GB of RAM (Dual-Channel) it took 15 minutes and 16 seconds to perform the same task. More details at my blog: http://papac.homeip.net/joe/blog/index.html I hope this helps some of you in choosing memory upgrades.