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Re:macOS Catalina by jamienicol on Tuesday October 08, 2019 @02:49AM (#21189455)
It's a very odd trick given that Catalina still supports my 7 year old macbook pro. Why not force me to upgrade sooner if it's all about the money?

Not saying I agree with apple's decision, but it's surely it's just about reducing their own engineering costs.

Re:macOS Catalina by RantyDave on Tuesday October 08, 2019 @11:54PM (#21199857)
I think sidecar uses h265 so it's probably a question of the GPU either having dedicated h265 hardware or having enough grunt to run some kind of shader.