The m6i.12xlarge pairs 48 vCPU with 192 GiB of RAM, the 4.00 GiB-per-vCPU ratio that marks a general-purpose instance. In the name, "m" is the general-purpose line, "6" is the generation, "i" marks Intel processors and "12xlarge" is the size within the m6i family. It runs on Intel Xeon 8375C (Ice Lake) at 3.5 GHz, and AWS introduced it in August 2021. AWS has since shipped m7i, m8i and m9g; m7i.12xlarge is the direct replacement at this size, scoring 1,068,012 CoreMark/s against this instance's 808,353 — roughly 32% more throughput for the same vCPU count. Spot's node ladder tops out below this size, so m6i.12xlarge becomes 3 × gp.vs2.2xlarge (48 vCPU, 192 GiB combined), about 95% below the US East (N. Virginia) on-demand rate. Spot delivers compute as managed Kubernetes, so a node pool of that size is the native shape of the answer rather than a workaround — provided the workload scales horizontally.
| Region | AWS on-demand | AWS Spot | 1-yr Reserved | 3-yr Reserved | Rackspace Spot | You save |
|---|---|---|---|---|---|---|
| US East, N. Virginia | $2.304 | $0.657 | $1.524 | $1.045 | $0.123 | $2.181 savings |
| US Central, Chicago | no AWS region | $0.123 | ||||
| US Central, Dallas | no AWS region | $0.153 | ||||
| Hong Kong | $3.168 | $2.096 | $1.437 | $0.033 | $3.135 savings | |
| Sydney, Australia | $2.880 | $1.396 | $1.905 | $1.306 | $0.483 | $2.397 savings |
| London, UK | $2.664 | $0.806 | $1.760 | $1.211 | $0.663 | $2.001 savings |
| US West, San Jose | $2.688 | $0.714 | $1.773 | $1.225 | $0.453 | $2.235 savings |
| US Central, Dallas 2 | no AWS region | $0.003 | ||||
| US East, N. Virginia 2 | $2.304 | $0.657 | $1.524 | $1.045 | $0.453 | $1.851 savings |