Techs & Trends
A better and/or faster processor allows apps to run faster. Raw processor speed is measured in MHz or GHz. (1 GHz = 1,000 MHz.) However some processors are more powerful than others, so even if two different processors both run at 1 GHz, if one is more powerful, it may run software apps much faster.
So what makes one 1 GHZ processor "more powerful" than another 1 GHZ processor, and how can I tell one from the other?
The best way to tell which processors are faster is to check out benchmarks of actual devices.
Note that some phones have better implementations (supporting chips and circuitry, etc.) of specific chips than others, so even if two phones have the same processor, one make be faster. So phone benchmarks are often more important than knowing the processor type.