Sylvain Lafontaine (fill the blanks, no spam please) wrote:
Even for those mobo that doesn't require dimms in pairs, is there a BIOS
setting that might have an influence on this?

(in other words, is it possible that with a wrong BIOS setting on some
motherboards, dimms will not be accepted if they are not in pair?)

Not as I've seen. I can't say no, because, just Because I haven't mean
it doesn't exist.

There ARE motherboards that don't like mismatched ram, but they will
accept singles.
And I have seen some DIMMS that don't work singly (Pre PC-100 standard,
non-spd), they reqire another stick on some motherboards, but not
necessiarily a match.

As far as DDR goes, there may be a bios setting to toggle between
single-channel and dual -channel. Maybe if it's set to dual channel, it
won't like single. Best guess, not certianty.