Probably a fairer comparison would be something that runs natively using vulkan or metal on both Apple's M1 and X86/Nvidia that isn't heavily optimized for just one of those. There aren't that many modern games that you could reach for here. But probably something that can target both vulkan and metal would be what you'd want. The upcoming x-plane v12 is something I might like a mac studio for.

What's interesting here is that is that we're haggling over comparing something that is an SOC design with fairly modest energy usage and cooling with a video card and cpu (presumably) that need a lot of power and cooling. Imagine Apple putting a few of these CPUs in the mac pro next year (or whenever they release that).

Of course these things are pricey. 5K for the 64 core model, ouch. I think they are going to be making lots of money selling these.

As for intel, amd, and nvidia. They each need to get their act together on the SOC front. They are not for crippled laptops anymore but for high end work stations as well. Nvidia should re-assess what they want now that their arm acquisition is off the table. IMHO they should get rid of amd/intel as the go-to cpu for their gpu and just build their own SOC and target it at gaming machines, workstations, etc. There's no good reason to stick with x86 anymore either. License ARM, or maybe hop on the Risv V bandwagon.