Another round of speculative-execution vulnerabilities

> At roughly 1ft/ns, this means your typical ATX mobo cannot operate faster than 500MHz. Knock a nought off that, to give a 3cm chip, and you've stuck a nought on your chip speed, 5GHz. Careful placement of components will nudge that speed up, but if components need to communicate "across chip", you're stuffed ...

We're already seeing that in RAM speeds where there's a tug-of-war over having it on-CPU/off-CPU, each new DDR version has a huge jump in latency that needs to be papered over with more cache, DIMMs on large boards need buffer chips, DDR5 (iirc) now *requires* ECC to survive normal operation…

I wouldn't be surprised if a few years from now we start seeing hard NUMA become mainstream. Back to the days of having an empty slot close to the CPU because the manufacturer was too cheap to populate it!