I recently bough a new RB4011iGS+5HacQ2HnD-IN and before i had the chance to configure it, the metal became extremely hot ( just at the point of burning your hands ) and we still haven’t reached this summer..
I understand this is to dissipate the heat but i would like to ask two questions as i am considering returning it:
Is it possible ( currently or in a near future ) to lower the CPU frequency with RouterOS or make some other configuration to prevent it from heating this much.
Interesting, mine is not gtting hot at all, despite being fitted into very tight place with no ventilation and serving 500/500 connection, switching local network (over cpu, switch chips are crap on this), vpn, etc…
Under Health, it reports ~45C as temp and it is not definitely “hot” to touch…but this is non-wireless model, maybe radios are generating lot of heat?
OT: I really love form factor of this model, there is no way, I could have fit 8 port switch + ISP “generic consumer” router into that space.
Thank you for your input. It would also be really nice to have other RB4011iGS+5HacQ2HnD-IN users reply. I don’t see how the radio card alone can generate this much heat.
I am really considering returning it…
I have 2 hAP ac which I really enjoy, and they really excel in many ways and are always at ambient temperature..
Could you comment also on my first question?
That is, if I don’t want it to heat this much how can I reduce the CPU frequency or other, by software means, in order to reduce heat even if that means lower performance?
Will this be possible/available for the RB4011iGS+5HacQ2HnD-IN?
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.
Almost al ARM based routers have a little higher temperature then normal as we can see on MISPBE devices. Even my hAP Ac2 have higher temperature then other devices i haved before. But i think its normal, and dont have downsides.
You are complaining but not sharing temp reported on system health menu, please share to have an objective view of the situation
RB4011 is not a tiny device like hAP AC2, this device have twice as much cpu clock and uses Heaviest Out of Order CPU so expect more power consumption then HEAT
Passive cooled devices are designed to work a little hotter that is normal but is important to provide proper air flow
Maybe this device is not right for your needs, dont expect the device to be changed just for you
Datasheet its very clear, Power consumption around 23 watt, passive cooled device, this device will not work cool as a 5-10 watt tiny device, very clear on specs, dont expect this device to work well on a confined situation
Product photos make obvious the cooling fins at the back, and venting holes downside, its very clear you have to ensure proper free airflow for this device
If you cant live with this situation Put and external fan and its done you will have better temperatures
You can reduce the frequency by going to system-> routerboard-> settings-> cpu frequencu. When installed at 800 MHz and the 2.4Ghz WiFi is turned off, the temperature should stop at 37 C. This is idle. But I do not know how it will affect performance.
Today I looked at the temperature on rb4011iGS + rm in idle 34 C. And on rb1100ahx4 the temperature is 40 c with zero loading. The rb1100ahx4 case is barely warm. there the radiator does not touch the hull, but in a dream it seems it should still be hot. Who checked them at 100% loading cpu? What are your temperatures?
Mine runs hot (IMHO too hot) to the touch as well. System heath reports around 45C during the day. Even without the 5GHz radio which I normally disable.
This 4011 replaced a 2011 few weeks ago. Temperature was never a concern on the 2011.
Noted per design the chassis will become hot. However, I think the designed chassis temperature is too high,.
Hi team, I was tasked to evaluate the RB4011 before investing in more units.
This unit feels warm to the touch, even at zero load/shutdown.
Our unit is running RouterOS/firmware 6.43.14
we performed a System > Reset Configuration
no clients connected with LAN or WLAN
the unit was tested sitting in an open space on a table top with at least 2m clearing in all directions
the ambient air temperature was 23.5°C
Test #1 - with the unit powered on, we measured the external temperature at different points on the metal casing at 5 minute intervals after boot:
Time after boot / case temp
5 mins / 28.4 °C
10 mins / 33.0 °C
15 mins / 35.3 °C
20 mins / 37.0 °C
25 mins / 37.8 °C
30 mins / 38.6 °C
35 mins / 39.0 °C
40 mins / 40.2 °C
45 mins / 40.2 °C
50 mins / 40.4 °C
55 mins / 40.8 °C
60 mins / 40.8 °C
Test #2 - logon to the unit (winbox) and shutdown the unit. Our expectations were that the temperature would drop to ambient room temperature as the unit was now powered down (but still connected to PSU):
Time after shutdown / case temp
1 hour / 43.0 °C
2 hours / 43.5 °C
3 hours / 44.5 °C
4 hours / 45.0 °C
10 hours / 45.0 °C
I would be very interested to hear if the above observations are expected?
If the power is connected the cpu is still running, even when you issue a shutdown in routeros. It just does a unix halt all processes and sits there in an idle loop, there is no way for it to power down if it’s like all the other routers i have seen.
Yes, Mikrotik devices have a history of running quite hot. So far I’ve seen no reports of actual problems caused by this, the CPUs are rated for very high temperatures. If your router is actually crashing or exhibiting other strange behavior as a result of the temperature then it’s a problem.
