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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
Plus, if game developers targeted ARM instead of x86, im sure their games would actually run great on those A20s, but they're probably not going to make an ARM version of their game.
I don't think triple-A is meant to run on those chips in anything but low at 1080p60. Not even double-A
The A20 could theoretically handle 4K gaming. Just depends on the game developer. The iPhone 18 Pro has 7 GPU cores, and it has about 12GB unified RAM to share between the CPU, GPU, and Neural Engine.
Plus the ARM instructuin set is a bit more modern, so there is probably performance gains to be had that x86 couldnt handle
For any games running on phones with those A20s, they're already compiling for ARM.
For anything that gets an official MacOS release, they're probably targeting ARM at this point and soon they'll have to. Rosetta 2 support is getting dropped next year (supposedly a limited subset of Rosetta 2 will stay around for old x86 games).