7 ms·

Raspberry Pi 4 doesn't need a fan. People just like to put them on because because micromanaging CPU temperature is part of the hobby for some. Yes it might thr

by merpkz 3mo ago

Raspberry Pi 4 doesn't need a fan. People just like to put them on because because micromanaging CPU temperature is part of the hobby for some. Yes it might throttle its CPU speed when going full tilt for some time, but lets be real how many workloads require poor Raspberry Pi to be loaded 100% for prolonged periods of time?

rjzzleep 3mo ago
If it throttles CPU it means by definition means that a fan helps. Also constant heat increases failure rate.
- parineum 3mo ago
  Cycles of heating and cooling are what increases failure rates. The thermal expansion and contraction causes issues.
  - rjzzleep 3mo ago
    Permanent heat doesn't?
    - magicalhippo 3mo ago
      From what I've gathered, heat absolutely does[1] affect[2] it[3]: Subsequently, in 1967, Black of Motorola experimentally derived a median time to failure (MTTF, i.e., operational lifetime) model for EM in Al interconnects, showing that the time to failure due to EM is inversely proportional to both the current density and the absolute temperature of the interconnect. [1]: https://infinitalab.com/blog/ic-failure-analysis-defect-types/#Common_IC_Failure_Mechanisms https://infinitalab.com/blog/ic-failure-analysis-defect-type... [2]: https://resources.system-analysis.cadence.com/blog/msa2020-blacks-equation-for-mttf-due-to-electromigration https://resources.system-analysis.cadence.com/blog/msa2020-b... [3]: https://www.mdpi.com/2079-9292/14/15/3151#sec3-electronics-14-03151 https://www.mdpi.com/2079-9292/14/15/3151#sec3-electronics-1...
    - numpad0 3mo ago
      Thermal cycles, heat, current, all contribute to degradations and failures. It just so happens that cycling is the worst and everyone knows "it's the power cycles that kills computers". Doesn't mean at all that electronics can't be damaged countless other ways.
  - ssl-3 3mo ago
    That's one way to put it. Another way is that my great grandchildren won't care about inheriting my collection of hobbyist SBCs, and therefore nor should I.
msh 3mo ago
Running plex/jellyfin :)

by merpkz 3mo ago

rjzzleep 3mo ago

If it throttles CPU it means by definition means that a fan helps. Also constant heat increases failure rate.

parineum 3mo ago
Cycles of heating and cooling are what increases failure rates. The thermal expansion and contraction causes issues.
- rjzzleep 3mo ago
  Permanent heat doesn't?
  - magicalhippo 3mo ago
    From what I've gathered, heat absolutely does[1] affect[2] it[3]: Subsequently, in 1967, Black of Motorola experimentally derived a median time to failure (MTTF, i.e., operational lifetime) model for EM in Al interconnects, showing that the time to failure due to EM is inversely proportional to both the current density and the absolute temperature of the interconnect. [1]: https://infinitalab.com/blog/ic-failure-analysis-defect-types/#Common_IC_Failure_Mechanisms https://infinitalab.com/blog/ic-failure-analysis-defect-type... [2]: https://resources.system-analysis.cadence.com/blog/msa2020-blacks-equation-for-mttf-due-to-electromigration https://resources.system-analysis.cadence.com/blog/msa2020-b... [3]: https://www.mdpi.com/2079-9292/14/15/3151#sec3-electronics-14-03151 https://www.mdpi.com/2079-9292/14/15/3151#sec3-electronics-1...
  - numpad0 3mo ago
    Thermal cycles, heat, current, all contribute to degradations and failures. It just so happens that cycling is the worst and everyone knows "it's the power cycles that kills computers". Doesn't mean at all that electronics can't be damaged countless other ways.
- ssl-3 3mo ago
  That's one way to put it. Another way is that my great grandchildren won't care about inheriting my collection of hobbyist SBCs, and therefore nor should I.

msh 3mo ago

Running plex/jellyfin :)