c7i.16xlarge is AWS's compute-optimized EC2 size at 64 vCPU and 128 GiB. In the name, "c" stands for compute, "7" is the generation, "i" marks Intel processors and "16xlarge" is the size within the c7i family. It runs on Intel Xeon Scalable (Sapphire Rapids) at 3.2 GHz, and AWS introduced it in September 2023. AWS has since shipped c8i and c9g; c8i.16xlarge is the direct replacement at this size, scoring 1,583,570 CoreMark/s against this instance's 1,461,076 — roughly 8% more throughput for the same vCPU count. The closest Spot shape is ch.vs1.2xlarge at 16 vCPU, so this instance maps to 4 of them — 64 vCPU and 128 GiB across the fleet, about 94% 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 | $2.856 | $0.798 | $1.889 | $1.257 | $0.164 | $2.692 savings |
| US Central, Chicago | no AWS region | $0.044 | ||||
| US Central, Dallas | no AWS region | $0.444 | ||||
| Hong Kong | $3.629 | $2.401 | $1.646 | $0.164 | $3.465 savings | |
| Sydney, Australia | $3.730 | $1.460 | $2.462 | $1.695 | $0.164 | $3.566 savings |
| London, UK | $3.394 | $0.446 | $2.240 | $1.542 | $0.524 | $2.870 savings |
| US West, San Jose | $3.562 | $0.933 | $2.352 | $1.619 | $0.008 | $3.554 savings |
| US Central, Dallas 2 | no AWS region | $0.488 | ||||
| US East, N. Virginia 2 | $2.856 | $0.798 | $1.889 | $1.257 | $0.648 | $2.208 savings |