Why does CPU run at half speed after SSD upgrade?
My iMac 10,1 Late 2009 3,06 Core2Duo returns almost exactly half the score it should (I have another machine, same specs at hand for reference).
Software solutions tried so far:
- reset PRAM
- tried two different startup drives
- used one of these on the second machine, results there ok
- eliminated all Startup apps
Hardware changes. I replaced the optical drive with a Samsung 1 TB SSD EVO 840. So I still have the original HDD in the machine.
What could cause the CPU to throttle? Can a defective CPU run, albeit slowly?
Any other hardware problems which could cause this behavior?
Is this a good question?