ARM7 is an architecture, not a specific model. ARM7 processor can be made by any licensee of the technology to suit their needs. As such, their clock frequencies can range anywhere from 1 Mhz to 2.5 GHz.
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http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dvi0022a/ar01s02s09.html
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dvi0022a/ar01s02s09.html
processor frequency
processor frequency
processor frequency ~tekno
graphics base frequency
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ARM7
2.2 GHz is a processor frequency, and 800 MHz is a FSB frequency. First defines how many operations can the processor does; second one defines how much information the processor transfers to other components of computer.
It tells you how many operations per second your processor is capable to do. The higher frequency is better. Also you have to take in count a number of cores.
The measurement of processor core frequency is defined in the name of Hertz, which is for cycles per second (this is the frequency you refer to.) This is an electromagnetic waveform frequency. One high and low of the waveform would be equal to one Hertz measurement cycle.