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Apple's A20 Pro shatters Geekbench 7 single-core record — 2nm chip beats desktop Intel Core i9 and AMD Ryzen 9 by up to 32%
(www.tomshardware.com)
A20 Pro vs Intel Ultra 7 Series 3
Even higher, since those Apple silicon chips are very efficient.
You misread. OP mentioned price/performance, and I think you're referring to performance/watt.
Oh, you mean the upfront price per chip, not the operating cost. Funny enough, the A20 chips are no more expensive (and possibly cheaper) than their Intel and AMD counterparts. The main issue is that the A20 is locked inside an iPhone, which is overpriced.
You can't buy them standalone. There's no way to compare them.