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Soundwave said:
Chicho said:

All the cards on the video were UHS-I or lower that tops at 180 MB/s and the fastest one outperformed the switch gamecard  by 0.16 second but lost to the internal storage by 2.07 seconds loading Zelda. A UHS-II SD card tops at 312 MB/s. A  UHS-III SD card tops at 624 MB/s. 

I'm aware of UHS-II ... UHS-II cards just aren't that common, especially in the Micro SD format, they are generally full sized SD Cards and the Switch doesn't support those. 

But past that, 312MB/sec is still slow as shit. If Nintendo uses any moderately good more modern flash storage, it's going to be way faster than that. UHS-II cards also cost more and are harder to find.

If Nintendo is to offer a higher speed memory card, I think it's very possible they will just make their own based off an existing format (like UFS external cards) but make it proprietary and keep all that profit themselves and ensure the best compatibility and performance. But that idea is probably going to upset some people. 

Instead of trying to develop their own high-speed memory cards, they should simply use M.2 SSDs, specifically in the 2230 format like the Steam Deck, for instance.

For less than 20 bucks you can have 256GB sticks on Amazon, and 1TB cost ~70 bucks. Nintendo can't possibly even just come close to those prices with their own propietary format, and even older ones with just 500MB/s to 1000 MB/s (which are getting pretty rare these days) should be fine. They could give their own branded ones a kind of casing both for protection and as a heatsink (and logo display), but that's about it. So for memory extensions there shoudn't be much of a problem.

The bigger question would be about the physical media like game cards or gamepaks. The ones used in the Switch are obviously too slow going forward, so here Nintendo will need some better replacements - and potentially somewhat bigger ones to get enough connectors for the higher speed on them.