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Honestly... you're not going to use it.
The vast majority of web sites are only on 100Mbps links, some on 10Mbps links, and even the ones that can serve faster than that generally don't because of the nature of web traffic.
Then when you're looking at file servers, be it AWS S3, Drive, etc... those will throttle traffic and you won't see crazy speeds at all.
Even if you consider 4k video streams, you're not going to be getting uncompressed data, so you won't actually cap this stuff out.
You probably already have a WiFi system that will be fine... but if not, then don't buy consumer hardware for speed, go straight to office hardware and look at an Ubiquiti AP such as https://www.ubnt.com/unifi/unifi-ap-ac-lite/ and plug it in to your existing router.
I'm presuming your home ethernet is already at 1Gbps because that's been the default for enough years that I'd be surprised if it wasn't.
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Velocio
Do we have a general network thread somewhere? Just got a letter from my fibre provider, as they've upped my speed to a dedicated 200/200 Mbit/s line (and kept the price at £8 a month...). They suggest I buy a TP-Link Archer C2 AC750 through them, but is there anything better I should consider? I'd like high speed and some customisability.