> Q2: > given the minuscule work-load, is there any preference/preclusion between > employing the 'usual' x86 processor or 2 Arm Ampere processors? Both offer > Linux. Cost is effectively same.
You should check if the software you want to use is available for the desired platform. Distributions might provide dovecot packages for ARM while the official dovecot repository might not. Then you would have to compile the sources yourself. Rspamd uses hyperscan, a high performance regular expression library by Intel that does not run on ARM (IIRC). There are forks like Vectorscan that might not run stable yet. In general Linux runs smooth on both platforms, it depends more on your particular needs. > Bonus Q: (sheer curiosity) > Might the latter answer change in a 'real' enterprise environment? Currently ARM processors often outperform x86 in terms of performance per watt which is interesting for hosting/cloud providers, especially in countries where electricity got quite pricey due to green energy transformation regulations. Moreover Ampere processors bundle lots of cores which is good for load that can be distributed whereas x86 processors with fewer cores but higher frequency might be better suited for latency-sensitive applications. Best regards, Gerald
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