Accurately measuring CPU power consumption a challenge, authors say
January 24, 2012Traditional measures such as TDP (thermal design power) or CPU architecture-specific benchmarks are no longer good predictors of actual chip power consumption, several computer science professors have charged. Their paper, which will be presented at an Association for Computing Machinery conference in March, advises chipmakers to expose their CPUs' power metering to programmers — something Intel has already done with its “Sandy Bridge” CPUs.