Instances›AWS EC2›m8i›m8i.24xlarge
Compute
vCPUs96
Memory384 GiB
Mem / vCPU4.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth30,000 Mbps
Throughput3750 MB/s
IOPS120,000
Networking
Performance40 Gigabit
Max ENIs16
IPv6Yes
GPUNone
Family sizes
m8i.large2 vCPU · 8 GiB
m8i.xlarge4 vCPU · 16 GiB
m8i.2xlarge8 vCPU · 32 GiB
m8i.4xlarge16 vCPU · 64 GiB
m8i.8xlarge32 vCPU · 128 GiB
m8i.12xlarge48 vCPU · 192 GiB
m8i.16xlarge64 vCPU · 256 GiB
m8i.24xlarge96 vCPU · 384 GiB
m8i.32xlarge128 vCPU · 512 GiB
m8i.48xlarge192 vCPU · 768 GiB
m8i.metal-48xl192 vCPU · 768 GiB
m8i.96xlarge384 vCPU · 1536 GiB
m8i.metal-96xl384 vCPU · 1536 GiB
m8i.24xlarge

The m8i.24xlarge is a general-purpose AWS EC2 instance: 96 vCPU and 384 GiB of memory, 4.00 GiB per vCPU. In the name, "m" is the general-purpose line, "8" is the generation, "i" marks Intel processors and "24xlarge" is the size within the m8i family. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in August 2025. AWS has since shipped m9g; m9g.24xlarge is the direct replacement at this size, scoring 3,487,950 CoreMark/s against this instance's 2,193,158 — roughly 59% more throughput for the same vCPU count. No single Spot node covers 96 vCPU and 384 GiB, so the equivalent is a fleet: 6 × gp.vs2.2xlarge, 96 vCPU and 384 GiB in total, 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

m8i.24xlarge gives you 96 vCPU and 384 GiB in a single machine. The largest comparable Spot node, gp.vs2.2xlarge, is 16 vCPU and 64 GiB, so the equivalent here is 6 nodes rather than one.

Spot runs as managed Kubernetes, so a 6-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 96 cores and 384 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$5.080$1.720$0.246
$4.834 savings
US Central, Chicagono AWS region$0.246
US Central, Dallasno AWS region$0.306
Hong Kong$0.066
Sydney, Australia$6.350$2.233$0.966
$5.384 savings
London, UK$5.874$2.628$1.326
$4.548 savings
US West, San Jose$5.927$1.179$0.906
$5.021 savings
US Central, Dallas 2no AWS region$0.006
US East, N. Virginia 2$5.080$1.720$0.906
$4.174 savings
When to use it
Good for
  • ●Backend services with no single dominant resource
  • ●Queue workers and scheduled jobs
  • ●Web and application servers with mixed CPU and memory demand
  • ●Workloads that fit inside 384 GiB of RAM
  • ●Parallel work that can occupy 96 vCPU
  • ●Network-heavy services — AWS rates this size at 40 Gigabit
  • ●Anything that shards cleanly across 6 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●The working set needs more than 384 GiB of RAM
  • ●The work is single-threaded. Most of these 96 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.
  • ●More than 4.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
$3,709/mo on AWS on-demand against $180/mo on Rackspace Spot for the 6-node equivalent — market-priced, not list-priced.
  • 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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