Computer performance: Difference between revisions

Revision as of 22:54, 5 July 2021

Revision as of 09:09, 6 July 2021

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System designers building [[parallel computing|parallel computers]], such as [[Google search technology#Production hardware|Google's hardware]], pick CPUs based on their speed per watt of power, because the cost of powering the CPU outweighs the cost of the CPU itself.<ref>{{cite web |url=http://www.eembc.org/benchmark/consumer.asp?HTYPE=SIM |title=Archived copy |access-date=2009-01-21 |url-status=dead |archive-url=https://web.archive.org/web/20050327005323/http://www.eembc.org/benchmark/consumer.asp?HTYPE=SIM |archive-date=2005-03-27 }}[http://news.cnet.com/Power+could+cost+more+than+servers,+Google+warns/2100-1010_3-5988090.html]</ref>

For spaceflight computers, the processing speed per watt ratio is a more useful performance criteriacriterion than raw processing speed.<ref>D. J. Shirley; and M. K. McLelland. [https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2656&context=smallsat "The Next-Generation SC-7 RISC Spaceflight Computer"]. p. 2. </ref>

D. J. Shirley; and M. K. McLelland.

[https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2656&context=smallsat "The Next-Generation SC-7 RISC Spaceflight Computer"].

p. 2.

</ref>

=== Compression ratio ===