Hey, I dont think the SiS 684FX can do dual channel. I read that its aimed at the middle market that dont necessarily need dual channel. The Everst proggy is showing that you only have one stick of 512 in slot #1 at the moment, but some pics I saw show the SiS 684FX board to actually have 3 slots in total. Here are some links:
SiS 684FX pic
bit suggesting board doesn't have dual channel support
:thumbup: