Once again, @ErrataRob derails my brilliant plan to build an MSP430 workstation and server platform.https://twitter.com/ErrataRob/status/980907462973902849 …
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ARM chips that use half the power are half as fast. There are no ARM chips that run as fast as Intel's fastest chips.
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You can always have same perf (assuming //izable jobs) just by adding more cores. At perf parity, ARM is ~half power consumption.
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That's what everyone thinks. Not people who know CPUs, of course, but everyone else.
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Apparently it's what
@Cloudflare thinks.https://twitter.com/eastdakota/status/976560820611031040?s=20 …
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That's because it's a network processor that includes fixed-function accelerators for crypto and compression that would otherwise be done in software on Intel CPUs.
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I've seen similar results on big compile jobs, no acceleration. Need to test myself sometime.
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My semi-educated guess is that you can do way better than 1/2 power consumption (maybe as low as 10%) just by using a larger array of simpler cores rather than higher-end out-of-order ARMs.
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Of course if Intel made simple cores they could be competitive here too, but they abandoned the Atom microarchitecture that was the closest thing they had (and likely their only hope for making chips unaffected by Spectre).
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As a plus. ARM64 supports many core designs and has a wealth of proven 'extensions' offering some cool custom chip perspectives.
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