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Desktop mainboard is equipped with Crucial, DDR4-2400, PC4-19200 2x16GB, CT2K16G4SFD824A, CL=17, dual Ranked, x8 based, unbuffered, non-ECC, 1.2V, 2048Meg x64bit modules. What is power consumption for idling 16GB (16Gbit x8 packages) dram module and for module at fulltime read/write/termination workload?

(Some numbers found before suggested 1.9 Watts for idling and up to 4.7 Watts for intense workload profile through module, but no overclocking or overvolting. Are these values reasonable? Old numbers for DDR2 and DDR3, interesting, but year 2008 knowledge: https://www.infoq.com/articles/power-consumption-servers)

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  • Those values are reasonable on a per module basis - is 2 DIMMS = twice the power. Note that I gave said reasonable - I don't know them to be correct for these specific modules.
    – davidgo
    Commented Jan 6, 2019 at 9:10
  • Thx @davidgo - Mobile LPDDR4 numbers tend towards "1.1V 2y-nm 4.35Gb/s/pin 8Gb LPDDR4 mobile device"¹ and that is almost 40% below LPDDR3 parts at (probably) top power demand. [1] researchgate.net/publication/…
    – beyondtime
    Commented Jan 6, 2019 at 19:02
  • "Plenty of portable devices have required under 1W (watt) even over 12.8GB/s/ch data bandwidth to run the Ultra High Definition (UHD) displays. This requirement leads next generation low power DDR memory standard namely, LPDDR4. The conventional Pseudo-Open Drain (POD) has utilized VDDQ termination to operate over 1.6Gbps."² - means 64pins/ch - [2]_01/2014 researchgate.net/publication/…
    – beyondtime
    Commented Jan 6, 2019 at 19:37
  • "Power efficiency is 2.4mW/Gbps/pin in 20nm mobile DRAM process, which is 44% lower value than that of LPDDR3."³ - [3]_01/2013 researchgate.net/publication/…
    – beyondtime
    Commented Jan 6, 2019 at 19:44
  • DRAM table for idle vs. performance power profile: superuser.com/a/1122236/981508
    – beyondtime
    Commented Oct 10, 2021 at 18:56

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