You don't make business decisions on a whim. Especially ones as large as dropping Intel. By the time that decision was made and business strategy was determined, Intel sucked, and AMD was not even close YET. Therefore, Apple decided to scale up their successful phone processors.Mmm.. Synthetic benchmarks.. 13900K performs better single core still and at a fraction of the cost. What a great choice going to their own processor. Apple is doomed. People paying this much money for a machine like that literally have too much money and little common sense. Not to mention you can put a 4090 or soon to be 5090 in the 13900K machine and blow the socks off the Mac Pro at any compute task. and STILL be a fraction of the cost. Apple is literally doomed to repeat the 80's-90's again.
Similarly, just because Intel and AMD are fine NOW, doesn't mean history will NOT repeat itself and cause these processors to hit a wall.
Lastly, things are evolving. It's not just about raw CPU and GPU performance any more. Apple processors have more than CPU cores and a GPU. It has Neural Engines, Media Encoders and very very fast RAM, which the GPU can access all of it. In professional workloads, this can have more benefits than simply a 4090 with very limited memory.
My 13900k and 4090 setup cannot compete with my M1 Ultra Mac Studio in a couple of areas, as mentioned above. Not only faster RAM, but GPU can access all 128GB of it from my main system. I also am able to export my video much much MUCH faster (even with the poor scaling issues of the M1 Ultra) compared to my Windows system.
Also, realize we just got through a pandemic and global shutdowns, chip shortages, etc. A LOT of world issues that impact work, materials, timelines and just the ability to improve a whole lot. Intel's and NVIDIAs solution is mostly pump more power and heat in these. Which is why I have a 1,000 watt power supply for my setup. Never had a system this power hungry before. And HOT HOT HOT, even idle it heats up my office like crazy. I actually need to ban my system from use in hot summer days as my AC can not keep up. Did not have an issue with my 9900k and 1080/5700XT setup.
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