We’ve all seen processor specs like; 2.0ghz to 4.3ghz. I read this throttled CPU speed is a function of CPU temperature; the cooler the CPU gets the faster it can run. I’d like to understand this a bit more. Many have gone to installing larger CPU heat sinks, larger fans, even manually controlling fan speed. These actions are done to keep the CPU cooler / to keep the CPU from getting too warm. 

So, anyone have an answer to when / what temperature limits allow the CPU to run at a higher clock rate than the base 2.9ghz? If my CPU runs at under 30C, is it running at 3.5ghz (some frequency other than the base 2.9?) 

Is there an accurate program that will let me look that what speed the CPU is running at? 

Are making the fan / heat sink modifications allowing our CPU’s to run faster? 

When we turn our system on in the morning, does it start off running at 4.3ghz, then slow down as the CPU warms up?

These are interesting questions to me. Hoping someone has factual answers to the above.

 Thanks, Scott.