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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.
1 or 2.5g sure, not 5 or 10.
Anecdotal, but I'm doing 10g over a 100ft 5e cable. It's not technically supported, but it does work on short runs.
I’m hoping for the best I can get right now. 1G is the choke point and rated speed, but I’ll take anything better if I don’t have to restring that cable.
My fastest current devices are 2.5gE, but I mostly want to loosen the choke point