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New open source GPU is free to all — FuryGPU runs Quake at 60fps, supports modern Windows software
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Or Xonotic
I'm not much of a gamer, Gnome Mahjong is mostly good enough for me, but I have enjoyed Xonotic. It's a pretty fast play.