Instances›AWS EC2›m7i›m7i.16xlarge
Compute
vCPUs64
Memory256 GiB
Mem / vCPU4.00 GiB
ProcessorXeon Scalable
Clock speed3.2 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth20,000 Mbps
Throughput2500 MB/s
IOPS80,000
Networking
Performance25 Gigabit
Max ENIs15
IPv6Yes
GPUNone
Family sizes
m7i.large2 vCPU · 8 GiB
m7i.xlarge4 vCPU · 16 GiB
m7i.2xlarge8 vCPU · 32 GiB
m7i.4xlarge16 vCPU · 64 GiB
m7i.8xlarge32 vCPU · 128 GiB
m7i.12xlarge48 vCPU · 192 GiB
m7i.16xlarge64 vCPU · 256 GiB
m7i.24xlarge96 vCPU · 384 GiB
m7i.metal-24xl96 vCPU · 384 GiB
m7i.48xlarge192 vCPU · 768 GiB
m7i.metal-48xl192 vCPU · 768 GiB
m7i.16xlarge

m7i.16xlarge is AWS's general-purpose EC2 size at 64 vCPU and 256 GiB. In the name, "m" is the general-purpose line, "7" is the generation, "i" marks Intel processors and "16xlarge" is the size within the m7i family. It runs on Intel Xeon Scalable (Sapphire Rapids) at 3.2 GHz, and AWS introduced it in August 2023. AWS has since shipped m8i and m9g; m8i.16xlarge is the direct replacement at this size, scoring 1,612,497 CoreMark/s against this instance's 1,339,566 — roughly 20% more throughput for the same vCPU count. The closest Spot shape is gp.vs2.2xlarge at 16 vCPU, so this instance maps to 4 of them — 64 vCPU and 256 GiB across the fleet, 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.

Match qualityScale-out match

m7i.16xlarge gives you 64 vCPU and 256 GiB in a single machine. The largest comparable Spot node, gp.vs2.2xlarge, is 16 vCPU and 64 GiB, so the equivalent here is 4 nodes rather than one.

Spot runs as managed Kubernetes, so a 4-node pool is the normal way to run things rather than a workaround. If your workload already sits behind a load balancer, a queue or a scheduler, it spreads across them without changes. If it needs all 64 cores and 256 GiB in one process, it does not.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$3.226$0.675$2.134$1.463$0.164
$3.062 savings
US Central, Chicagono AWS region$0.164
US Central, Dallasno AWS region$0.204
Hong Kong$4.435$2.934$2.012$0.044
$4.391 savings
Sydney, Australia$4.032$1.906$2.667$1.829$0.644
$3.388 savings
London, UK$3.730$0.404$2.463$1.696$0.884
$2.846 savings
US West, San Jose$3.763$1.079$2.482$1.715$0.604
$3.159 savings
US Central, Dallas 2no AWS region$0.004
US East, N. Virginia 2$3.226$0.675$2.134$1.463$0.604
$2.622 savings
When to use it
Good for
  • ●Microservices and container fleets
  • ●Development, staging and CI environments
  • ●Small to mid-size relational databases
  • ●Workloads that fit inside 256 GiB of RAM
  • ●Parallel work that can occupy 64 vCPU
  • ●Network-heavy services — AWS rates this size at 25 Gigabit
  • ●Anything that shards cleanly across 4 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●Starting a new deployment. m8i.16xlarge is the newer generation at this size.
  • ●The working set needs more than 256 GiB of RAM
  • ●The work is single-threaded. Most of these 64 vCPU would sit idle.
  • ●Local NVMe or instance-store disk is a hard requirement
  • ●GPU or FPGA acceleration is needed
  • ●Sustained full-core CPU load. A compute-optimized family costs less per unit of work.
m7i.16xlarge runs $2,355/mo on AWS on-demand. The 4-node equivalent on Rackspace Spot: $120/mo.
  • Spot sells spare capacity at market prices. It is the cheapest compute on the internet.
  • Prices are set by supply and demand. You pay what the market decides.
  • Compute is delivered as fully managed Kubernetes. All infrastructure is taken care of.
  • Egress costs $0.01/GB after the free allowance. AWS charges $0.09/GB.
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