The BIOS probably defaulted to manual something you had in Auto. Clocks will never fluctuate when you tell it not too. Sounds like you had it in C-state where the multi changed upon load. They're made to do that. You know how to stop it from doing that? I do...thousands others do too. You really made a thread about this and it wasn't fixed within a minute?
And for future reference, "Power" is the common term of "Energy sucked from the wall", not benchmarks. I have a 60-watt light bulb at my desk; never passed one benchmark.
But you outshoot us Americans with non-plastic rifles, so I'd love to hear your take on what ails ya