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Lately I have been almost entirely focused on designs for absolutely massive websocket connection density. So that means a deep dive into reworking software selection to unlock significant opportunities past lines of code. Reach low systems engineering far enough and you touch silicon!
Anecdotally, ARM core for core can deliver twice (sometimes more) the rqs as x86 so long as the team behind it understand how to properly build for ARM.
What about baremetal deployment capex? Right now AmpereOne is often “price on request” but expect at least 1/3 cheaper to comparative generation AMD / Intel equivalents. The saving doesn’t stop there, superior power efficiency means energy costs are also down in a similar region 1/3 or more dependent on idle metrics.
This same assessment is likely well known by providers such as Hetzner, which is why their ARM products cost more than x86. Their research evaluation likely revealed the same, that if you are comfortable to exert complete control your stack then it makes very little sense to not choose ARM.
The web hosting industry tends to follow single file. As soon as one company hypes their batch of Epyc purchases, others all stand in line and update their lineup to match. Don’t make that mistake. Conduct research and build your stack first using low cost cloud provider hardware, it will substantially pay off.