[Beowulf] Opteron downrates DDR400 to DDR333 performance?
ballen at gravity.phys.uwm.edu
Mon Feb 6 07:23:59 PST 2006
> according to the chart in the AMD doc, if you already have two 2-rank dimms
> installed, further dimms need to be single-rank dimms to stay at ddr400.
> the wording of the doc makes it seem like this is actually up to the board
> vendor, though - how they configure the memory controller in bios.
> it is, after all, one of those cases where faster is by definition closer
> to the point of failure. what actually happens depends on the bios.
I'd be grateful for a pointer (URL + page number) to the chart in the AMD
doc. I apologize if you have already circulated this -- I didn't realize
the relevance of the thread until rather late.
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