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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.
Intel is probably still the gold standard. I'd pay a few bucks more to have something much more reliable.
I guess you're not familiar with the i225-v and its variants. Intel burned their reputation for good NICs with that fiasco.