I have recently got a Gigabit Internet connection from Vodafone. However, when I do a speed test on the PC, the results are not what I would like.
"ncpa.cpl" shows me 1.0 GBit / s connection to the router via LAN (router is next to the PC) but in the test I get rates in the range of 300-400 MBit / s.
The PC / mainboard are just over 6 years old and the laptop bought 2 years ago gets about 700-800 Mbit / s from the router via the same network cable.
Vodafone's speed test tells me that the signal up to the router would be great at 1.1 GBit / s.
Now my question: Does installing an additional NIC, which I bridge, bring an advantage? Does anyone have any experience?
No, it has no advantage. Especially since you have to decide which card you ultimately connect to on the internet.
If one of the network cards is really broken, you can replace it. But more network cards for a higher download rate is not possible.
More transmission through honorary network cards is already possible. You get multiport network cards for the server world, but for home users that is pointless. Just as a note.
"But for home users," and that's what it's about here, so I didn't go back at all. But of course you are right, only I found this information, as I said, to be absolutely irrelevant to the questioner in this context, sorry.
Rarely that a network card less than 10 years old is slower than a DSL line as long as you don't have an Internet backbone.