OK, so far the settings I know, which are NOT discussed in the BIOS Survival Guide . If you should have settings I shouldn't have discussed here yet and which you also couldn't find in the Guide, then let me know please !
Special Note for MR BIOS Users
MR BIOS usually only lets you choose the DRAM speed, like 70ns/60ns/50ns, but it's well known for it's aggressive timing. So if you choose 50ns, you should have performance wise the best configuration - as long as it works.
Flash BIOS upgrades
Wim Bervoets' excellent guide to Flash BIOS upgrades for all M/B manufacturers present on the web ! Not to be missed !