They can also use upscaling techniques like Nvidia DLSS and AMD's FidelityFX to render at a lower HD resolution and upscale to UHD. This would be 50% faster than M1 performance in an iPhone. The GPU for VR also needs to be around 4TFLOPs (Half-Life Alyx VR minimum is a ~4TFLOP Nvidia 1060) so I'd expect 3nm chips to be the minimum for something like this. I assume the host device would be an iPhone/iPad as it needs a big enough battery to work for long periods of time. There will be wifi 7 at some point - (30Gbps+, 2024). Perhaps wifi 6 is efficient and fast enough but continual heavy wifi transmission tends to heat up the device. It says it doesn't need line-of-sight and can in theory handle 100Gbit/s with practical demos of over 1GB/s (8Gbit/s). They'd have an extra LED light on the phone and a receiver on the headset. Some kind of light transmission technique is an alternative: Maybe they can use wifi as a fallback but the current wireless standards aren't great for high bandwidth, low power data transfer. If they use custom chips for wireless transmission like the W1 chips in the headphones, it could require one in the host device. I don't know how you could possibly think it wouldn't be. My, probably vain, hope is that any Apple VR device will not be exclusive to the Apple ecosystem.
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