Nic be14 thermal throtelling

Hey, Im using the bpi r4 with the be14 card, I get advertised speed as expected even in 6ghz, though after like 5 minutes it drops down to like 30mbps

my only guess is that the wifi card getting thermal throtelling because the ethernet speed is 1gb as advertised

Have you read out temps? If they are in range (i guess till 70°C) it should be no thermal throtteling

@frank-w It gets to 80 degree, I dont use any heatsink (I only get it power on for testing for now until I DIY somthing for the wifi chip and I live outside the US so it’s hard to get heatsinks in custom sizes, also I use the 2.5 port version so I didn’t buy the metal case)

Speaking of the metal case, you could still use it with the 2.5G version, just don’t put the back panel on.

Really? I just 3d printied one, it not bad at all except the heatsink for the wifi card

Yeah, the dual SFP+ and 2.5GbE versions have the same PCB and one can be converted into the other.

Yeah, that’s make sense, just surprised that you can remove the front plate

@frank-w I didn’t understand your answer, so if it does exceed 70 c, it should throttle? Because I can’t find reference for that behavior (it makes sense, just want to be sure)

I do not know exact temperature,but 70°C is mostly near the point where so action is needed for lowering temp. We could look in driver if there is something,but till now it was a guess :slight_smile:

I would start at

The const used as max is set to 100 in mt7996.h, but there is some calculation in the functions.

Ahh, so it’s a firmware protection, not a hardware one, thanks!!!