Hi there,
I’ve noticed since closing my case (standard RB800 black case) that the temp as reached 76c - Given that there an temperature error in the firmware, I decided to measure it externally and the temp on the heatsink was at 70c.
I need to keep the unit in the case, or upgrade it to rackmount or something, but can someone recommend a bigger heatsink.
P.S MK team - please release some kind of system addon to help with the heat.
we are also waiting
Temperature reports and monitoring them by SNMP should be fixed at MikroTik RouterOs 4.10 version.
don’t forget to upgrade the bootloader as well, it has some important fixes for v4.10
To Normis
i dont understand this
this rb was tested with a thermometer and the temperature was 70 degrees and the question was about a heatsink
But the answer was to upgrade to new ros
what is the problem with mikrotik can they not admit that there is a problem with the rb800
we will return our Rb800 to the supplier and not buy any until we get an answer
Just the temperature reading alone doesn’t indicate that there is a problem. It’s normal for these to become hot, 70C is fine for them. Are there any signs of problems that you think are related to the temperature?
at the moment it is cold outside (16c) and we have no problems (cpu is running at 56c)
3 days ago it was 21c outside and the cpu was running at 71c and the rb just disconnected
then we have to switch off power and wait for the temeprature of the cpu to go down to 65c and then it will work again
when the cpu gets to 71c it disconnects again and we have to disconnect power and wait
if you can not see that this is an cpu overheating problem then what about the other people that have the same problems
when we underclock the cpu to 600 it takes longer to heat up
we would like a answer soonest
thanks
I’m actually finding the system is lagging slightly - I’ve tried to install a larger heatsink but I can’t get it to sit with any pressure thus not help the situation at all.
Could you please create a large heat sink that we could buy - just taller or something? But also airflow is a slight issue - is there anyway to increase the volts/amps to the fan?
yes 3v and 5v fans are useless most fans are 12 volt
If AP heats up, at lower Hz, to the same temperature than it means that enclosure does not dissipate heat quickly enough. Larger CPU Heatsink will not help in that regard. You need to find a way to remove the heat from the enclosure at faster rate than it is created by RB800 and radios.
i have same problem, until now the problem never solve 
If you take the RB800 and the standard case (which is made for them!) the unit cannot substain the heat created. I wanted to buy a router which would not have more load than 22% and even still in its case, the temp after 4 hours reaches 85c on the cpu - at that point I didn’t want it to be damaged so removed the case and the temp dropped to its current 68c.
Like you say, the heat needs to be removed or atleast drawn away. I actually think this is a manfacturing error in the fan volts and the airflow - it needs more of both!
Like I said it would be great if MK can do some kind of add-on to the board to help with this (ideally something that can work in their indoor case!)
Edit:
I’ve been thinking and the easiest - fastest solution would be for MK to make a new case (I understand this may not help everyone but something is better than nothing).
— MK - if you can create a case like the Watchguard - firebox 2 (rackmountable/desktop by adding brackets), with the main’s power feeding 12v power to case fans and of course power to the unit itself, the unit wouldn’ need touching itself.
Please can we get a formal response and something build quickly? The last thing I or anyone needs is dead RB800’s from heat - which may/may not be covered under warranty.
i agree
this is bad design from the manufactor
The problem is that you put your RB800 in a closed box and think it’ll work flawlessly under extreme conditions.
Well where does MikroTik expect you to put it, outside strapped to your tower without an enclosure? And why does the RB600 work flawlessly, even wth an overclocked CPU, in the same enclosure with the same wireless cards?
Also, since when is 21 degrees ambient “extreme conditions”?
Inside the enclosure. 
What do you have for enclosure?
Ut7 box same as for the rb600
Personally my units are closed, but if this was a problem, surely it wouldn’t have been created in the first place?
If you down-clock it to RB600 frequency it’ll produce same amount of heat and should work in whatever box RB600 worked. Higher freq will require enclosures that dissipate heat at greater rate - large surface area (ribbed) and aluminum- or fan cooled case.
Exactly!
