Inaccuracy of the RPM poll if the cooler costs more than one fan with a total connection

VictorVG

Well-Known Member
Inaccuracy of the RPM poll - cooler SNOWMAN M-T6S uses dual 120 mm fan have rotation speed 800 - 1600 rpm ±10% , but I see wrong max rpm value highest 2000 rpm :) - is not real. I do not pay attention to this - funny, and okay. I am more interested in when I get out of the time to change the thermal tax -the CD -850 was not the best, worked for about two years and under the replacement, I want to use ZEZZIO ZT-PY6 (thermal conductivity 13 W/mk, thermal resistance <0.025 C-Inh/W, works from - it works from - 50°С to +200°С), there are other options, but they have thermal conductivity below.

And also interesting - not all radiators for memory modules are useful:) - on a machine where the CPU is overheated, there are RDIMM Samsung M393B2G70QH0-CMA without radiators, and on the second LRDIMM Samsung M393B2G70QH0-CMA with factory radiators and there DIMM2 will have to be replaced - it is overheated (up to +63°С) with a high counting load that causes memory controller errors. It is good that I have spare some LRDIMM Samsung M386B4G70DM0-CMA3, then other submodel - Samsung M386B4G70DM0-CMA4 is have some RAM and thermal sensor chip, but another iMB and with them we will get problems up to random kernel panic and incremental count WHEA error's.
 

Attachments

  • 1.jpg
    1.jpg
    147.3 KB · Views: 5
  • 2.jpg
    2.jpg
    135.1 KB · Views: 5
  • bug.jpg
    bug.jpg
    40.5 KB · Views: 5
If there are multiple fans connected to one sensor (e.g. using a Y-splitter), the counting might not be accurate.
It's not possible to automatically detect the correct counting and you might need to adjust the value in HWiNFO.
 
This is understandable, like the reason - people are accustomed to “Is there a sensor? We need to interrogate!”, and the fact that signals from several independent sensors connected in to on input can have a time shift (“phase shift”) that causing an error of the fan rotation rate error - for heating equipment creating cooling systems, this phenomenon lies outside their universe. :)

And then the simplest solution suggests itself - we consider the number of revolutions according to the RPM = RPM/N formula - then N is number of wire pin 3 connectors fans. This will allow you to take into account the temporary difference between the moments of arrival at the Super I/O chip signal from the tachometer of individual fans, which generates the phenomenon of "multiplication of speed".
 
Last edited:
Back
Top