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About: Megahertz myth     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatMicroprocessorsyago:Artifact100021939yago:Chip103020034yago:Conductor103088707yago:Device103183080yago:Instrumentality103575240yago:Microprocessor103760310yago:Object100002684yago:PhysicalEntity100001930yago:SemiconductorDevice104171831yago:Whole100003553 New Facet based on Instances of this Class

The megahertz myth, or in more recent cases the gigahertz myth, refers to the misconception of only using clock rate (for example measured in megahertz or gigahertz) to compare the performance of different microprocessors. While clock rates are a valid way of comparing the performance of different speeds of the same model and type of processor, other factors such as an amount of execution units, pipeline depth, cache hierarchy, branch prediction, and instruction sets can greatly affect the performance when considering different processors. For example, one processor may take two clock cycles to add two numbers and another clock cycle to multiply by a third number, whereas another processor may do the same calculation in two clock cycles. Comparisons between different types of processors ar