How to detect android cpu speed?

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The best way to do it in my opinion is to monitor the time it takes to do these actions. If it is taking too much time, then the system is too slow and you can disable fancy features until it is fast enough.

Reading the CPU speed or other specs and attempting to judge the system speed is a bad idea. Future hardware changes might make these specs meaningless.

Look at the Pentium 4 vs the Core 2 for example. Which is the faster CPU, a 2.4 GHz Pentium 4, or the 1.8 GHz Core 2? Is a 2 GHz Opteron faster than a 1.4 GHz Itanium 2? How are you going to know what kind of ARM CPU is actually faster?

To get system speed ratings for Windows Vista and 7 Microsoft actually benchmarks the machine. This is the only halfway accurate method to determine system capabilities.

It looks like a good method is to use SystemClock.uptimeMillis().

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