Internet speed question

My two Librem 13(v3 and v4) are connected to the internet
one with wifi other with ethernet to the electrictiy grid to the router
I have a macbook air 11" from 2013 with debian
The macbook shows internet speed of around the 40Mpbs Download and upload ofaprox 25Mpbs
the Librems (both the wifi connected and the ethernet via electrical grid and in the same location as the macbook) show approx 6Mpbs download and upload of 5Mpbs

When moved closer to the router the Librem with the wifi shows Download of 100Mpbs

Why is this differences??
In there anything I can do about it?
Thanks

I think what you are seeing for the “ethernet via electrical grid” is simply that that ethernet connection is limited to the speed you saw there. Pretty sure the Librem 13 would reach much higher speeds over ethernet if the ethernet connection itself was fast. You could check this by connecting some other computer to the same “ethernet via electrical grid”, my guess is you will see the same speed then, nothing to do with the Librem 13.

Regarding Wi-Fi I think the Librem 13 has a built-in Wi-Fi chip that works but its performance is not great. If you need faster Wi-Fi far away from the access point, one option is to get an external Wi-Fi gadget to plug into a USB port.

You could check this by connecting some other computer to the same “ethernet via electrical grid”, my guess is you will see the same speed then, nothing to do with the Librem 13.

Or just plug the laptop ethernet cable directly into the router and bypass the ethernet-over-powerline completely, right?

Yes, good idea.

Speed on the MacBook with debian was 18.7
And on the Librem it was 5.6
So it seems that somehow the Macbook has a ‘better’ internet capabilities.
I never new this differences existed.

When the librem is nearer the router I got arond the 100Mbps without a ethernet cable.
The issue is in my room.

Wireless has soooo many variables to it. The wall material, the wall shape, the wall insulation (if any), ceiling and floor material/shape/insulation, content of the room and adjacent rooms, etc. Reflection, refraction, and absorption of radio waves all affect performance. Signal strength is only one aspect of wireless performance, other factors like collisions/interference due to other devices using the same radio frequencies in the area, EMI from infinitely many possible sources, it’s just all around difficult to diagnose wireless performance and we haven’t even gotten to the software/hardware differences between devices.

Also powerline, while more consistent than wireless, is still not comparable to a dedicated ethernet cable. There are many ways the electrical wiring of the building can impact performance of powerline equipment.

It’s about diagnosing the problem.

If you are trying to diagnose the slow ethernet (not wifi) speeds, the best way to find if it’s a problem with the laptop or ethernet-over-powerline. Bypassing the ethernet-over-powerline adapter will help you with the diagnosis.

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OK thanks for all the replies.
I finally changed the position of the laptop in the room and have a remarkable improvement.
Who knew how tricky this stuff is.

Thank you