Gah no time to read tthis all to see if I already posted it.
I found out CPUNB = +50% mem speed
I asked Brian about it and all I got was "memset is you friend" (brian has the amd memory record IIRC)
I find out later... AMD support says 3 times cpunb to mem clocks. MEnaing real mem clocks not effective.. IE 1600MHz ram is really 800MHz and need 2400 MHz cpunb....
I hate being right... makes me feel all responsible and stuff.
edit: what does this mean to you the OCer? keep cpunb low and mem clocks low and 4.6GHz is easy