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Realtek's $10 tiny 10GbE network adapter is coming to motherboards later this year
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
I am just wondering if it would be better to go straight to fiber instead of ethernet as most have fiber to the home anyway. That should help with future speed upgrades beyond 10Gbit as well.
Fiber is also more power efficient? Why not?
An SFP+ single mode module alone costs ~20€ at least. Add to that a PCIe extension card and you're way over the cost of copper.
Add to that, that most homes have multiple devices that you want connected. So you need a fiber switch as well. 150usd will get you a mikrotik crs305, with 4 sfp+ ports. And you'll probably want a router, but perhaps you can offload that to your ISP, kinda like routing on a stick.