Frequency scaling (original) (raw)
In computer architecture, frequency scaling (also known as frequency ramping) is the technique of increasing a processor's frequency so as to enhance the performance of the system containing the processor in question. Frequency ramping was the dominant force in commodity processor performance increases from the mid-1980s until roughly the end of 2004. The effect of processor frequency on computer speed can be seen by looking at the equation for computer program runtime: However, power consumption in a chip is given by the equation
| Property | Value |
|---|---|
| dbo:abstract | In computer architecture, frequency scaling (also known as frequency ramping) is the technique of increasing a processor's frequency so as to enhance the performance of the system containing the processor in question. Frequency ramping was the dominant force in commodity processor performance increases from the mid-1980s until roughly the end of 2004. The effect of processor frequency on computer speed can be seen by looking at the equation for computer program runtime: where instructions per program is the total instructions being executed in a given program, cycles per instruction is a program-dependent, architecture-dependent average value, and time per cycle is by definition the inverse of processor frequency. An increase in frequency thus decreases runtime. However, power consumption in a chip is given by the equation where P is power consumption, C is the capacitance being switched per clock cycle, V is voltage, and F is the processor frequency (cycles per second). Increases in frequency thus increase the amount of power used in a processor. Increasing processor power consumption led ultimately to Intel's May 2004 cancellation of its Tejas and Jayhawk processors, which is generally cited as the end of frequency scaling as the dominant computer architecture paradigm. Moore's Law was still in effect when frequency scaling ended. Despite power issues, transistor densities were still doubling every 18 to 24 months. With the end of frequency scaling, new transistors (which are no longer needed to facilitate frequency scaling) are used to add extra hardware, such as additional cores, to facilitate parallel computing - a technique that is being referred to as . The end of frequency scaling as the dominant cause of processor performance gains has caused an industry-wide shift to parallel computing in the form of multicore processors. (en) |
| dbo:wikiPageID | 8898329 (xsd:integer) |
| dbo:wikiPageInterLanguageLink | dbpedia-fr:Fréquence_du_processeur |
| dbo:wikiPageLength | 3274 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1074317053 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Voltage dbr:Dynamic_frequency_scaling dbr:Tejas_and_Jayhawk dbr:Overclocking dbr:Frequency dbr:Computer_architecture dbr:Parallel_computing dbc:Central_processing_unit dbc:Computer_architecture dbr:Moore's_Law dbr:Intel dbr:Capacitance dbr:Underclocking dbr:Power_consumption dbr:Voltage_scaling dbr:Multi-core_(computing) dbr:Parallel_scaling |
| dbp:wikiPageUsesTemplate | dbt:About dbt:Reflist |
| dct:subject | dbc:Central_processing_unit dbc:Computer_architecture |
| rdfs:comment | In computer architecture, frequency scaling (also known as frequency ramping) is the technique of increasing a processor's frequency so as to enhance the performance of the system containing the processor in question. Frequency ramping was the dominant force in commodity processor performance increases from the mid-1980s until roughly the end of 2004. The effect of processor frequency on computer speed can be seen by looking at the equation for computer program runtime: However, power consumption in a chip is given by the equation (en) |
| rdfs:label | Frequency scaling (en) |
| owl:sameAs | freebase:Frequency scaling wikidata:Frequency scaling dbpedia-fa:Frequency scaling dbpedia-hr:Frequency scaling dbpedia-la:Frequency scaling dbpedia-sr:Frequency scaling https://global.dbpedia.org/id/2yvKi |
| prov:wasDerivedFrom | wikipedia-en:Frequency_scaling?oldid=1074317053&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Frequency_scaling |
| is dbo:wikiPageRedirects of | dbr:Static_frequency_scaling dbr:Frequency_ramping |
| is dbo:wikiPageWikiLink of | dbr:Energy_proportional_computing dbr:PowWow dbr:Parallel_algorithm dbr:Parallel_computing dbr:Theoretical_computer_science dbr:Multi-core_processor dbr:Static_frequency_scaling dbr:CORE-OM dbr:System_Power_Management_Interface dbr:Parallel_multidimensional_digital_signal_processing dbr:Frequency_ramping |
| is foaf:primaryTopic of | wikipedia-en:Frequency_scaling |