We have 4 of these in use at the moment. All are running with the cases hot to the touch. They’re really hot. But they seem to be running fine. We have ours rack-mounted and this is definitely contributing to the we high temperatures.
The RJ45 SFP+ converter is genuinely hot enough to burn skin though. I think that’s also normal!
Please read previous comments, @normis already gave an explanation (Fri Mar 29):
“The device has a very high performance CPU and no active cooling, the enclosure is made to act as a heatsink. It is designed to be hot.
Without active cooling fans, you can’t make it cooler. Even just running idle at low CPU frequency it will be hot.”
Currently there have not been any changes regarding to its working temperature.
While devices are being used in tested ambient temperature range, there should not be any problems:
RB4011iGS+RM
Tested ambient temperature -40°C to 70°C
RB4011iGS+5HacQ2HnD-IN
Tested ambient temperature -40°C to 45°C
My RB4011 is in an upright position, which gives it more ventilation. It was a very hot summer in my region - +50 in the shade.
The temperature of the router did not rise above +44.
Really? Your RB4011 was cooler than the ambient temperature in the room? This can’t be correct data.
What was your actual room temperature (with conditioner maybe?) where the RB4011 was standing?
Anyway, my RB4011 with Wifi is running at 24.3V and 45-46C with almost no load currently and reading all the comments in here I got the confirmation I needed, it’s kind of expected to be this hot. (felt hot to touch; googled; landed here; not concerned anymore and just in case considering changing the router position to vertical or at least diagonal)
Temperatures for devices like this, using a higher power arm processor, are known to be hot, they are designed for this.
Lets compare it for instance with a raspberry pi 4 board, that can run as hot as 80 degrees celcius and that still is no problem at all.
One of the engeneers of the board even said the device can run for longe periods with temperatures around 90 degrees.
https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=243500&start=300#p1507295
So please don’t worry about 50 or even 60 degrees on the RB4011.
Yes, ~45 degrees seems to be the norm for this device.
Here’s a comparison between RB3011 and and RB4011 that replaced it around a month ago.
100% agree
I had several problems with RB4011 that I never had with RB2011 in the same scenario. Router hung up several times. I had to manually restart it.
I have 5 RB4011 working in different locations. Last week three RB4011 crashed completely, no ethernet connection, no possible reset, no netinstall. Unable to recover the device.
I’ve already sent RMA to the manufacturer. It is worrying because this device by size and performance (CPU, no fans, size, gigabit ports) was ideal for the job I need to do.
The temperature was not the problem. It happend at night.
The same router blocking issue has happened with us also multiple times all the connections to the router gets lost need to manually reboot the device to make it functional. this is a serious issue with rB4011iGS. this has never happened with Rb2011 or RB3011 which we have been using in production for years..
I choose this option for cooling down my device http://forum.mikrotik.com/t/rb4011/122850/372
I don’t think temperature is an issue. I have one deployed in a room full of industrial ovens. It’s showing 71C and it’s fine. And no, you can’t touch it because it’s so hot. But it’s been like that for about 6 months, so I think it’s fine. And even if it dies, it’s cheap enough to put another one in.
If cooler is hot it doesnt mean device is overheating it just means cooler is doing its job and taking the heat away from CPU or internal components.Did you ever had passively cooled GPU ?Its heatsink runs so hot even at idle that u cant touch it, but device is cool and works fine.
My 2011 is running @ 35C and my 4011 is running @ 37C. Both are wifi versions.
RB4011 42 celcius overclocked at 1800Mhz and stays amost the same no matter what ( with some variance from 41 to 43 celcius )
the whole boy acts as a heatsink. I do not think it is running hot at all
Hi Guys, I’ve a RB4011iGS (Wifi version) and IMHO the router is intended to be in a rack with ventialtion and Air conditioner so that’s the ideal I think, in my country now is summer and without ventilation and air conditioner it was running like 45° Celcius, I’ve made a cooler base (at my own) with some stuff that I’ve, and I’ve managed to decrease around 15°C now is working around 30°C without Air Conditioner On, when I do that is working around 26°C so in my opinion, is not prepared to work without external cooling and I think that at the end, it will affect the life of the router.
Here’s a picture of how it looks, just with a single cooler you can increase the performance and router life:
Here’s the temp with the cooler base and air conditioner on:
