CPU-Z - Core Speed?

[Infrared]

CPU-Z running on a 2008 Mac Pro:



I don't think I understand what the core speed is.

Why isn't it 2.8GHz?

Is this a speedstep situation?

Thanks.

 

[Quu]

That is most definitely Speedstep at work. Your FSB is correct.

Speedstep on Intel platforms reduces the Multiplier and keeps the FSB speed constant so if your FSB is correct (which it is) then your CPUs lower speed is due to the Multiplier being reduced by speedstep (Normal behaviour)

 

[Infrared]

That is most definitely Speedstep at work. Your FSB is correct.

Speedstep on Intel platforms reduces the Multiplier and keeps the FSB speed constant so if your FSB is correct (which it is) then your CPUs lower speed is due to the Multiplier being reduced by speedstep (Normal behaviour)

Ah, thanks very much. I have a bit of reading to do, it seems.

For a second I was worried Apple might have underclocked it

 

[inca]

Just for fun, could you post the mainboard and other tabs from CPU-Z, please?

 

[Eidorian]

Intel processors clock down to a x6 multiplier when idle (400 MHz x 6 = 2,400 MHz) you get full speed when in use (400 MHz x 9 = 2,800 MHz).