this post was submitted on 08 Mar 2026
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'Consider a system with no DRAM' replaced by a 'recycling fiber loop': John Carmack envisages bold future to avoid AI-driven RAM crisis (www.techradar.com)
submitted 4 days ago by tal@lemmy.today to c/technology@lemmy.world
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[โ€“] ms_lane@lemmy.world 10 points 3 days ago (1 children)

It's an interesting idea, but what's the floor size for a pair of 200TB/s fibre transceivers vs. 32GB of HBM?

It's it's not significantly less, this doesn't seem like it'd be particularly helpful outside the 200TB/s of streaming data.

[โ€“] tal@lemmy.today 5 points 3 days ago* (last edited 3 days ago)

I'm assuming that the point is the bandwidth.

goes looking for HBM bandwidth

https://en.wikipedia.org/wiki/High_Bandwidth_Memory

It says that HBM 4, which came out one year ago, can do 2 TiB/s.