View Issue Details

IDProjectCategoryView StatusLast Update
0002184SpeedFanFan controlpublic2013-10-26 20:46
Reportergpcola Assigned Toalfredo  
Status assignedResolutionopen 
PlatformPCOSWindowsOS Version8.1
Product Version4.49 
Summary0002184: Oscillating fan speed at idle
DescriptionI just downloaded Speedfan 4.49 for the first time in years, hoping to be able to control 3 new GentleTyphoon AP14 radiator fans based on BOTH my cpu and gpu temp - entirely possible using the latest version of Speedfan.

At the moment my loop is in pieces on the floor here so as a test I tried controlling my standard Intel CPU heatsink fan using a Speedfan 'Advanced Fan Control':

I thought this was working as intended because any increase in the load on CPU or GPU results in the fan speed increasing as I wanted, however there is a problem...

Over the course of around half an hour, at idle, I produced this fan speed chart:

These are the associated temps for the same period:

As you can see, there is a badly oscillating fan speed being produced by Speedfan at idle. I don't get this with the Gigabyte Smart Fan application that came with my motherboard, but then I don't get the ability to control fan speed based on two temps with it either

Is this a known issue?

My complete setup:

    PSU: Antec HCG620
    Mobo: Gigabyte Z87X-UD4H
    CPU: Intel 4770K
    GPU: Sapphire 7970 Ghz Edition
    Storage: Samsung 840 SSD + 3 x HDDs
    Case Fans: 2 x Scythe SlipStream 800s
    Radiator Fans: 3 x GentleTyphoon AP14s
    Radiator: Thermochill PA120.3
    Pump / Res: Laing D5 with XSPC reservoir top
    Blocks: YBris Cooling 'Black Sun' on both GPU & CPU
TagsNo tags attached.
Motherboard ModelGigabyte Z87X-UD4H
Video Card ModelSapphire 7970 Ghz Edition



2013-10-26 20:44


2013-10-26_171529.jpg (76,704 bytes)   
2013-10-26_171529.jpg (76,704 bytes)   


2013-10-26 20:45


2013-10-26_171556.jpg (90,361 bytes)   
2013-10-26_171556.jpg (90,361 bytes)   


2013-10-26 20:46


2013-10-26_180130.jpg (78,334 bytes)   
2013-10-26_180130.jpg (78,334 bytes)   

Issue History

Date Modified Username Field Change
2013-10-26 20:44 gpcola New Issue
2013-10-26 20:44 gpcola Status new => assigned
2013-10-26 20:44 gpcola Assigned To => alfredo
2013-10-26 20:44 gpcola File Added: 2013-10-26_171529.jpg
2013-10-26 20:45 gpcola File Added: 2013-10-26_171556.jpg
2013-10-26 20:46 gpcola File Added: 2013-10-26_180130.jpg