3 ms·

Does more RAM use more power?

• RealityVoid 8y ago
  It should, since the banks need to be constantly refreshed. I think the bigger power consumption for standby phones is RAM.
  • abfan1127 8y ago
    SRAM (not DRAM).
  • gnode 8y ago
    > I think the bigger power consumption for standby phones is RAM. Looking at this analysis, it seems the cellular radio is the largest consumer of power in standby, with RAM being minimal: https://www.usenix.org/legacy/event/atc10/tech/full_papers/Carroll.pdf https://www.usenix.org/legacy/event/atc10/tech/full_papers/C...
    • RealityVoid 8y ago
      It looks like you are correct. I wasn't truly sure of that statement when I made it. It was just mis-remembering something heard in the lecture here[1] and somehow I formed the idea that RAM is a big consumer in standby mode (even though the lecturer did not make such a claim) [1] https://youtu.be/wHVyshkyZ4w?t=1h20m44s https://youtu.be/wHVyshkyZ4w?t=1h20m44s
• cowboysauce 8y ago
  Yes, DRAM cells have to be refreshed every 60 ms or so. More RAM means more cells to refresh which means more power consumption.
• gnode 8y ago
  Yes, although if we're talking about improvements in RAM density (lithography improvements) rather than just putting more equivalent RAM in a machine, then that tends to mean lower power consumption per bit.