What Is a Processor's Frequency (GHz) and What It Really Means
Why you can't compare it between different brands without more context.
GHz indicates how many work cycles the processor performs per second — but comparing only this figure between different processors is one of the most common mistakes when choosing one.
Why you can't compare GHz between different brands or generations without more context: a 3.5 GHz processor can perform better than a 4.2 GHz one from a different or older architecture — frequency is only part of the equation, alongside the internal architecture, the number of cores, and cache.
When is it a valid comparison?
Comparing GHz makes sense only within the same generation and processor family — there, yes, more GHz usually means more performance directly.
Base frequency vs turbo/boost frequency
Modern processors show two figures: the "base" frequency (guaranteed, constant) and the "turbo" or "boost" one (maximum temporarily reachable under certain conditions, not sustained the whole time). Don't confuse the turbo figure (more eye-catching in marketing) with what the processor delivers consistently.
Tip: to genuinely compare processors, use benchmarks (comparative performance tests) instead of only looking at the advertised GHz — they reflect the real combined performance of all factors, not just one in isolation.
Frequently asked questions
Is a processor with more GHz always faster?
Only when compared within the same generation and processor family. Between different brands or generations, other factors (architecture, cores, cache) can make one with fewer GHz perform better.
What's the difference between base and turbo frequency?
The base frequency is what the processor maintains constantly and guaranteed. The turbo (or boost) is the maximum it reaches temporarily under certain conditions, not sustained the whole time.