[brucehoult]

You can't yet buy it.

I explicitly limited myself to things you can buy off the shelf RIGHT NOW, today, June 2024.

Of course the RISC-V situation is changing very quickly. By around year end we'll have SoCs with cores 2-3x faster than today (2x in IPC and also higher clock speed). And more big surges in 2025 and 2026 as things such as Ascalon and Veyron and others hit the market in mass production.