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IDProjectCategoryView StatusLast Update
0002523SpeedFanFan controlpublic2016-06-14 01:13
ReporterOttexr Assigned Toalfredo  
Status assignedResolutionopen 
PlatformIntel 775OSWindowsOS VersionXP SP3
Product Version4.49 
Summary0002523: Speedfan doesn't read RPM less than 700 on Noctua S12A
DescriptionOn the fan Noctua S12A-PWM, if the speed is set to less than ≈ 700 ≈ 45%, Speedfan, all recent versions, reads it to be 0. The fan obviously does rotate below, and is read normally in BIOS and HWmonitor. Moreover, when having launched HWmonitor, Speedfan starts to read the normal speed too. So i was wondering maybe Speedfan doesn't make all necessary initiation, that surfaces only with this fan? Speedfan did read RPM normally when i used it with Scythe slipstream fans, but not Noctua. (Noctua's people think it is a software issue, by the way.) Maybe you can check the sources of HWmonitor, maybe they have something extra that you deemed unneeded?....
Steps To ReproduceAttach Noctua S12A-PWM fan.
Setup Speedfan.
TagsNo tags attached.
Motherboard ModelAsrock P45DE
Video Card ModelSeveral: NV 9500GT, ATI 4550, ATI X1600



2016-06-10 01:13

reporter   ~0007990

With my Vardar 240 F3's Speedfan reports 0 RPM if I set the fans to less than 25% despite the fact that they are still spinning.


2016-06-14 01:05

reporter   ~0007992

Last edited: 2016-06-14 01:13

“HWmonitor”, what i meant, was check the sources of “Open hardware monitor”, because that's what is accessible, but i checked on HWmonitor and Open H. M., both have the same.

Issue History

Date Modified Username Field Change
2016-06-08 19:30 Ottexr New Issue
2016-06-08 19:30 Ottexr Status new => assigned
2016-06-08 19:30 Ottexr Assigned To => alfredo
2016-06-10 01:13 SteinerKD Note Added: 0007990
2016-06-14 01:05 Ottexr Note Added: 0007992
2016-06-14 01:08 Ottexr Note Edited: 0007992
2016-06-14 01:13 Ottexr Note Edited: 0007992