Average CPU Power

Average CPU Power

The Average CPU Power (abbreviated ACP), is a scheme to characterize power consumption of new processors under "average" daily usage (especially server processors), the rating scheme is defined by AMD for use in its line of processors based on the K10 microarchitecture (Opteron 8300 and 2300 series processors). This rating is similar to Intel's TDP used with Pentium and Core 2 processors, measuring the power consumption of high workloads, which in numbers are slightly lower than the TDP value of the same processor.

AMD claims the ACP rating includes the power consumption when running several benchmarks, like TPC-C, SPECcpu2006, SPECjbb2005 and [http://www.streambench.org/ STREAM Benchmark] (Memory Bandwidth) [ [http://www.anandtech.com/IT/showdoc.aspx?i=3091&p=2 AnandTech report] , retrieved September 10, 2007] [ [http://www.dailytech.com/AMD+Unveils+Barcelona+Architecture/article6299.htm DailyTech report] , retrieved September 10, 2007] [ [http://images.dailytech.com/nimage/5925_large_amd_explains_acp.pngDailyTech image] detailing ACP, retrieved September 10, 2007] which AMD said is a better method as a power consumption measurement for datacenters and server intensive workload environments. AMD has said that the ACP and TDP values of the processors will co-exist, and do not replace one another, all server products will seen two power figures starting from the codenamed "Barcelona" server processor onwards.

ACP compared to TDP

*55 Watt ACP - 68 Watt TDP
*75 Watt ACP - 95 Watt TDP
*105 Watt ACP - 125 Watt TDP

See also

*Performance per watt
*SPECpower

References

* [http://www.amd.com/us-en/assets/content_type/DownloadableAssets/43761A_ACP_WPv7.pdf Average CPU Power Whitepaper] , AMD
* [http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_8796_12353,00.html Power Efficiency] , AMD
* [http://images.dailytech.com/nimage/5925_large_amd_explains_acp.pngIntroducing Average CPU Power] , DailyTech


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