> How many TOPS do you need to run state-of-the-art models with hundreds of millions of parameters? No one knows exactly.
Why not extrapolate from open-source AIs which are available? The most powerful open-source AI (which I know of) is Kimi K2 and >600gb. Running this at acceptable speed requires 600+gb GPU/NPU memory. Even $2000-3000 AI-focused PCs like the DGX spark or Strix Halo typically top out at 128gb. Frontier models will only run on something that costs many times a typical consumer PC, and only going to get worse with RAM pricing.
In 2010 the typical consumer PC had 2-4gb of RAM. Now the typical PC has 12-16gb. This suggests RAM size doubling perhaps every 5 years at best. If that's the case, we're 25-30 years away from the typical PC having enough RAM to run Kimi K2.
But the typical user will never need that much RAM for basic web browsing, etc. The typical computer RAM size is not going to keep growing indefinitely.
What about cheaper models? It may be possible to run a "good enough" model on consumer hardware eventually. But I suspect that for at least 10-15 years, typical consumers (HN readers may not be typical!) will prefer capability, cheapness, and especially reliability (not making mistakes) over being able to run the model locally. (Yes AI datacenters are being subsidized by investors; but they will remain cheaper, even if that ends, due to economies of scale.)
The economics dictate that AI PCs are going to remain a niche product, similar to gaming PCs. Useful AI capability is just too expensive to add to every PC by default. It's like saying flying is so important, everyone should own an airplane. For at least a decade, likely two, it's just not cost-effective.