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Forum Discussion
CPU temperature below ambient temperature Case# 21233008
I received an RMA Pro Business edition to replace my Ultra 6 plus.
I have noticed that the CPU temperature runs about 8 celcius below the ambient temperature.
It is currently reading 11 celcius and the temperature of the room is 19.
This seems to be impossible as there is no active cooling nor is there any process like evaporation that would allow this temperature to fall below ambient.
Does anyone else see this?
I am running 4.2.23
I have noticed that the CPU temperature runs about 8 celcius below the ambient temperature.
It is currently reading 11 celcius and the temperature of the room is 19.
This seems to be impossible as there is no active cooling nor is there any process like evaporation that would allow this temperature to fall below ambient.
Does anyone else see this?
I am running 4.2.23
23 Replies
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- Received a reply from netgear support asking me to monitor the unit.
Does anyone see temps as low as this? I am concerned that the fan control may not work properly if it's based on incorrect temperatures. - I found this thread which seems to suggest that others, including mdgm have experienced very low CPU temperature readings without being too concerned. Seems to be a problem with the calibration.
viewtopic.php?f=51&t=55502&hilit=CPU+temperature
viewtopic.php?f=51&t=45849&p=261338&hilit=CPU+temperature#p261338 - I wouldn't rely on those values too much. The diode/chip creator also says it has a +/- of 10C.
The Ultra 6 (non-Plus, Atom based) will commonly read below 10C, not possible. - Ok, thanks ,that's useful to know.
- Interestingly, after initially asking me to "monitor the Nas", they now want to know what firmware I'm running, whether my old Nas had similar temps and whether I'd cleared the browser cache.
- Support seem to think this is not normal.
I have sent in logs and they have asked me to do OS reinstall which has made no difference - the nas cpu is apparently 10.5 celcius in a room of 19 celcius.
I will refer them to this thread and see what they say. - Now support want to telnet into my NAS. Seems a bit over the top if you ask me.
Now I need to remove all disks, initialise blank disk, then put the NAS into tech support mode.
I'll post outcome. - Instructions from netgear for tech support mode setup are not that clear:
Told me to port forward but forums suggest this is not necessary with 4.2.23.
Told me to give LAN ip, but unit ip changes to 192.168.168.168 as soon as it enters telnet mode.
I do not use dhcp on my network. The display says 0.0.0.0. Anyone know if I need to set up dhcp to get the Nas to get an ip?
Did not ask me to give telnet number, I've given it anyway. - Yes DHCP is needed for the NAS to get an I.P. in tech support mode (put the NAS back into tech support mode after doing this).
Since maybe 4.2.9(?) port forwarding is no longer needed. It is only needed if the secure tunnel back to NetGear doesn't work for some reason. - Thanks, done.
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