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Apple Discusses Push Towards High-End Mac Gaming in New Interview
(www.macrumors.com)
This is a most excellent place for technology news and articles.
If Apple ever actually entered the gaming market, (and I probably have a better chance of winning the lottery than them joining the gaming market)... I would fully expect that specific parts namely the GPU will have to be Apple approved. Probably nothing more than a small chip that authenticates it as Apple approved, much like they do with their laptops and cell phones currently. So if you think GPU price is are high the exact same GPU but Apple approved will have even higher cost. Because Apple is just a fashion brand really you're going to pay the fashion tax.
I honestly can't see that big of a market for this. A 4090 is supposed to be $1,600 MSRP. I would fully expect the Apple version of that to be $2,000 MSRP at minimum for the same product just with the Apple approved stamp.
Apple doesn’t support add-in GPUs anymore since switching to Apple silicon. Their iGPUs though are better than other iGPUs, performing in line with mid range discrete GPUs. They want the experience to be more console-like than PC-like though, you buy a standardized set of hardware and that’s that.