What are Microprocessor speeds are rated in?
The answer is Mega Hertz. Check it out on the Web : -)
My Two Cents Edit: How do people who give bad answers get trust? Hertz measures the REFRESH RATE OF A PROCESSOR. IPC, MIPS, and MFLOPS measure performance / speed with a great deal of accuracy over clock speed. An intel i7 with all its cores but one disabled will crush a single-core Pentium 4 in tests, even if you set the single-core i7 to 2.0GHz and the Pentium 4 to 4.0GHz
No there is no chart unless someone took the time to make one and put it out on the web. Microprocessor speeds are on the CPU. There are only 2 major companies that make microprocessors, Intel and AMD. So go to there web sites and look for a list of Microprocessors and it will show you the speed of each.
The reduction in the size of the circuit in a microprocessor will (generally) allow the device to be run at higher clock speeds. This will be due to shorter circuit pathways. It will also increase the challenges related to keeping the device cool, and there are some other variables that come into play when we scale something like a micro-p down.