this post was submitted on 01 Nov 2025
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China solves 'century-old problem' with new analog chip that is 1,000 times faster than high-end Nvidia GPUs (www.livescience.com)
submitted 2 days ago by kalkulat@lemmy.world to c/technology@lemmy.world
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"The new device is built from arrays of resistive random-access memory (RRAM) cells.... The team was able to combine the speed of analog computation with the accuracy normally associated with digital processing. Crucially, the chip was manufactured using a commercial production process, meaning it could potentially be mass-produced."

Article is based on this paper: https://www.nature.com/articles/s41928-025-01477-0

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[โ€“] Treczoks@lemmy.world 1 points 7 hours ago (1 children)

I know. My point was that this is horribly imprecise, even if their circuits are exceptionally good.

There is a reason why all other chips run digital...

[โ€“] floquant@lemmy.dbzer0.com 1 points 6 hours ago

How is it imprecise? It's the same thing as taking two containers of water and pouring them into a third one. It will contain the sum of the precious two exactly. Or if you use gears to simulate orbits. Rounding errors are a digital thing.

Analog has its own set of issues (e.g. noise, losses, repeatability), but precision is not one of them. Arguably, the main reason digital took over is because it's programmable and it's good for general computing. Turing completeness means you can do anything if you throw enough memory and time at it, while analog circuits are purpose-made