First up, I do not have an AMD system around to tinker with but I've seen posts from very informed people that in an AMD Bully/Vishy module, you can turn on core off and allow the other to utilize the shared resurces (decoder and fpu are the two i know of).
What intrigues me is, what is actually happening at the machine level. How doe BIOS switch off a core, what is the logic that is implemented at the machine code (?? is that what its called?)/low level language that accomplishes that. how is it physically translated?
Is there no voltage going into the switched off core?
thanks a lot
there is always so much to learn from you guys
I'm not absolutely positive as I have never attempted to disable cores on my wifes AMD system. But I'm pretty sure you cannot disable only a single core per se. Since the cores are seperates in pairs of 2 known a "modules" and there are 4 modules total. I believe you can only disable a single "module" at a time. Which means you can only disable 2 cores at a time.