m8azn.metal-12xlAWS Pricing, Specs & Benchmarks

The m8azn family is a generation-8 general-purpose line running on AMD EPYC (x86_64) — typically ~10% cheaper than the Intel sibling at comparable single-thread performance. m8azn.metal-12xl provides 48 vCPUs and 192GB of RAM (a 1:4 vCPU-to-memory ratio), priced at $4.9550/hr On-Demand — about $3567.63 per month at 24×7 utilization.

General-purpose instances are sized for application servers, mid-sized databases, caching fleets, and any workload where you want a balanced 1:4 vCPU-to-memory ratio without burstable credit accounting. If your workload doesn't match that profile — for example, if you're running a memory-bound app on a compute-optimized instance, or a CPU-pegged batch job on a burstable t-series — you'll likely pay for capacity you can't use or run into bottlenecks you didn't anticipate. The pages for sibling families (linked further down) cover those alternatives in detail.

In the AWS instance-naming convention, the digit after the series letter is the generation — higher is newer. This appears to be one of AWS's newer generations in the series, so for most fresh workloads it's a reasonable default within its category. The family suffix tells you about hardware variants: "n" = enhanced networking (typically 25–100 Gbps depending on size); "z" = highest single-thread frequency in the family.

Pricing varies by region (sometimes meaningfully — the gap between the cheapest and most expensive AWS region for the same SKU is often 15–30%). The regional pricing table further down shows where m8azn.metal-12xl is cheapest today, both On-Demand and Spot. Spot pricing for m8azn.metal-12xl is currently $1.1750/hr — roughly 76% off On-Demand — which makes the instance viable for fault-tolerant batch jobs, CI fleets, and any workload that can tolerate interruption with short notice.