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A 7950X capped to 65W is around 40% faster than an M1 Ultra. Capped to 105W it's almost 50% ahead (according to CPUMark).

For a workstation there is no comparison in terms of either performance or price. (Mac does have the high-bandwidth unified memory going for it which can make a difference in some situations.)

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Yes, there are configurations where a PC is a way better machine for the money, especially where Apple doesn't offer a directly comparable alternative. However, that doesn't mean, this applies in general, especially with laptops rather Apple is ahead of the game. So it varies by category and configuration.

It will be interesting to see whether Apple can continue with M3s, etc. I think they are facing pretty hard process limitations and I'm not sure that adding parallelism will get them huge gains on normal workloads, so they may be stuck at a plateau for a while, but we'll see.

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