M3A overclocking

[Thesavage]

Yes you are correct, however not all applicatios exhibit the same behaviour switching between ganged and unganged.eg (below is a good analysis of the Phenom cpumemory subsystem)
http://www.lostcircuits.com/cpu/amd_phenom/9.shtml
Also the effect of northbridge frequency,
http://www.lostcircuits.com/cpu/amd_phenom/21.shtml
http://www.lostcircuits.com/cpu/amd_phenom/22.shtml
Also George ou posted a table with the link between memory speed core speed and the efficiency of the memory controller at various frequencies(if i could only find where i saved it)
And this would help to explain some differences at various frequencies.

[justapost]

Yes you are correct, however not all applicatios exhibit the same behaviour switching between ganged and unganged.eg (below is a good analysis of the Phenom cpumemory subsystem)
http://www.lostcircuits.com/cpu/amd_phenom/9.shtml
Also the effect of northbridge frequency,
http://www.lostcircuits.com/cpu/amd_phenom/21.shtml
http://www.lostcircuits.com/cpu/amd_phenom/22.shtml
Also George ou posted a table with the link between memory speed core speed and the efficiency of the memory controller at various frequencies(if i could only find where i saved it)
And this would help to explain some differences at various frequencies.

That you for the links. That article covers most of the current phenom issues.

I tried to find out why the results drop if i set a nb speed>9. Thought the bios adjusts the ref HT in a way that the nb speed does not exceed the speed at 9x. KTE mentioned that this is not the case. I ran CB10 4xCPU at 8 ht multi and 8-10 nb multi.
Difference between 8 and 9 multi ~200 (7100 vs. 7300). Between 9 and 10 multi the points firts dropped ~100 points.
I compared memory subtimings and found that the max async latency has changed.
Using the same latency the difference shrunked to ~30. I ran each bechmark five times and used the average.
Sems the drops where caused by timing changes.
Looked for a way to change the CPU VDDC via registers. Found the msr-register where the value is stored, but it is empty. I assume it is not used. Hope the next bios will allow changing the prozessor voltage again.