Changes between Initial Version and Version 1 of Ticket #23837, comment 10


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Timestamp:
2024-08-21T15:41:35+02:00 (11 months ago)
Author:
taylor.smock

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  • Ticket #23837, comment 10

    initial v1  
    1111From a power efficiency standpoint, the current/last generation of CPU chips are ~450 (see [https://www.cpu-monkey.com/en/cpu_benchmark-cpu_performance_per_watt cpu performance-per-watt] which uses benchmark result/average energy required). The earliest CPU they have on that chart is from 2019 at ~100.
    1212
    13 This means that for the same unit of work, a current CPU is going to use ~75% less power than a 5 year old CPU. This probably scales to even older CPUs, but that is a guess (~5% less power than a 10 year old CPU, assuming a further 75% improvement on performance per watt from 10 year old cpus to 5 year old cpus -- this actually matches something [https://ir.amd.com/news-events/press-releases/detail/957/amd-exceeds-six-year-goal-to-deliver-unprecedented-25-times amd] had set as a goal -- about 4% of the energy usage per work unit from 2014 to 2020).
     13This means that for the same unit of work, a current CPU is going to use ~75% less power than a 5 year old CPU. This probably scales to even older CPUs, but that is a guess (~95% less power than a 10 year old CPU, assuming a further 75% improvement on performance per watt from 10 year old cpus to 5 year old cpus -- this actually matches something [https://ir.amd.com/news-events/press-releases/detail/957/amd-exceeds-six-year-goal-to-deliver-unprecedented-25-times amd] had set as a goal -- about 4% of the energy usage per work unit from 2014 to 2020).
    1414
    1515In short, assuming the following: