Karl Bellve said...
|What would be the appropiate BIOS settings? I am using a Tyan K8W with 
|2.04 Bios.
|
|I have 6GB on one cpu (2 x 2GB and 2 x 1GB memory sticks) and 4 GB on 
|the other CPU ( 2 x 2GB memory sticks).

I don't know about this specific board,
but at least some of the dual Opteron
boards floating around don't like you
to mix RAM types on a processor.  On such
systems, you could use the RAM sticks you
have to go 4 and 4 (2x2 + 2x2), or 8 (4x2)
and 2 (2x1), but not 6 and 4 as you have.

Did you check your manual?  If you don't
have one for the K8W, look here:

   http://www.tyan.com/support/html/manuals.html

There may be an issue between bus speeds, processor
speeds, etc.

-Miles