Core concept
1 OCPU = 1 physical core (2 hyperthreads). Different from AWS vCPU which is 1 thread.
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How it works
Ampere A1 is ARM. Some workloads need porting. Cheap + performant.
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Trade-offs + gotchas
E5 for general Linux workloads. A1 for cost-sensitive ARM-compatible. X9 for Windows/enterprise.