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PC speed gains erased by modern software
(hackaday.com)
This is a most excellent place for technology news and articles.
Single thread performance matter more when your metric is the speed of opening calculator, terminal and other apps. However, the 5900x has pretty good single thread performance already, roughly 1.5x faster than my old processor (i7-4790) and opening apps is pretty fast in my case (<1 second). Something is probably wrong with your setup. Perhaps you accidentally set your desktop power mode to "power saver" instead of "performance"?
Yeah there does seem to be something wrong now that I can see it. Now just need to work out what it is...
Opening a calculator/terminal should be on the order of 1ms or even faster. 1s is absurd
Alas, I'm using gnome so ~1s calculator launch is the best I can get 😬