2.4Ghz CPU now running at 1.6Ghz

[Matthew-1985]

I have a Core 2 Duo E6600 that should run at 2.4Ghz but it's now running at 1.6Ghz with a voltage of between 1.15 and 1.2. So CPU-Z tells me anyway.

Is this the thermal throttling thing? Speenfan says the CPU is running at 55C so is this to hot? Or is my CPU broken?

 

[Matthew-1985]

I am running Vista but I think it is slowing down. When I play a game it seems to go really slow so the speed must be dropping more. I've ordered a new heatsink/fan (the stock one was always quite crap, used to idle at about 40c) so hopefully that will sort it out.

Thanks for the help guys.

 

[Matthew-1985]

Ok I got a new cooler and the temps seem ok. BIOS was telling me it was about 35c but speedfan tells me that its about 55c. Is speedfan known to be wrong all the time?

Also CPUZ still tells me that it's running at 1.6Ghz. I checked the BIOS and all the settings there are fine and it can't be speedstep as that is turned off.

Anyone know that could be making it slow because something is. I havn't installed any new hardware or software and there's nothing else using the CPU.

I really don't have a clue on this one.