It seems to be in line with speculations I read on RWT and other forums. Basically every Opteron can work with un-reg DDR2 if mobo is allowing and your are connecting only 2 DIMMS per CPU! (regular A64 are using spare HT connections for greater Drive Strength which allows 4 unreg memories, Opterons need all HT connectors and that is why you can use only 2 unreg sticks /less Drive Strength/).
It is exactly same situation as it was with AMD760MP bridges. You could insert 2 un-reg DIMMS but if you needed 4 DIMMS the only available option was registered RAM
.
The question now to be answered is:
- is this mobo allowing all Opterons or this particular ones which are ES samples?
There can be some bios limitation not to run with normal Opties, but it can work with ES samples. Just a thought!
Originally Posted by Lightman
It seems to be in line with speculations I read on RWT and other forums. Basically every Opteron can work with un-reg DDR2 if mobo is allowing and your are connecting only 2 DIMMS per CPU! (regular A64 are using spare HT connections for greater Drive Strength which allows 4 unreg memories, Opterons need all HT connectors and that is why you can use only 2 unreg sticks /less Drive Strength/).
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