You'd be surprised, check out Hardware Heaven on YouTube, they may have something for you
WanderingCat
I use a TP Link ER605 and it works well. I had to ciall my ISP to get it enabled but that says easy.
I know you said you haven't got any PCI slots available, do you have any M.2 slots available? You might be able to get a M.2 to ethernet if so.
Fastest ever stock CPU sure. But I believe there was some old AMD CPU that got overclocked to more than 8Ghz!
Guess I'm eating a lot of waffles from now on
Or a calzone, depending on the pie
This is sad to see. I have a hOn device which I recently connected to WiFi to see what features it would have. Sadly it had to connect to the internet to work so I didn't play with it too much. I checked this plug-in out then and was hoping I could use it.
Well you can run 10 Gb/s over RJ45 these days too
GPU passthrough using Nvidia cards might be a bit tricky. With older cards they would error out when being passed, although this may be different these days.
what architecture is the CPU?
What did you use in place of the built in firewall?