Instances›AWS EC2›m8idn›m8idn.8xlarge
Compute
vCPUs32
Memory128 GiB
Mem / vCPU4.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
Type1 × 1,900 GB NVMe SSD
Bandwidth10,000 Mbps
Throughput1250 MB/s
IOPS40,000
Networking
Performance50 Gigabit
Max ENIs8
IPv6Yes
GPUNone
Family sizes
m8idn.large2 vCPU · 8 GiB
m8idn.xlarge4 vCPU · 16 GiB
m8idn.2xlarge8 vCPU · 32 GiB
m8idn.4xlarge16 vCPU · 64 GiB
m8idn.8xlarge32 vCPU · 128 GiB
m8idn.12xlarge48 vCPU · 192 GiB
m8idn.16xlarge64 vCPU · 256 GiB
m8idn.24xlarge96 vCPU · 384 GiB
m8idn.32xlarge128 vCPU · 512 GiB
m8idn.48xlarge192 vCPU · 768 GiB
m8idn.metal-48xl192 vCPU · 768 GiB
m8idn.96xlarge384 vCPU · 1536 GiB
m8idn.metal-96xl384 vCPU · 1536 GiB
m8idn.8xlarge

m8idn.8xlarge is AWS's general-purpose EC2 size at 32 vCPU and 128 GiB. In the name, "m" is the general-purpose line, "8" is the generation, "idn" marks Intel processors, local NVMe storage and enhanced networking and "8xlarge" is the size within the m8idn family. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in May 2026. AWS has since shipped m9g; m9g.8xlarge is the direct replacement at this size, scoring 1,176,038 CoreMark/s against this instance's 767,294 — roughly 53% more throughput for the same vCPU count. The closest Spot shape is gp.vs2.2xlarge at 16 vCPU, so this instance maps to 2 of them — 32 vCPU and 128 GiB across the fleet, $3.06/hr on AWS in US East (N. Virginia), from $0.082/hr on Rackspace Spot. 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

m8idn.8xlarge gives you 32 vCPU and 128 GiB in a single machine. The largest comparable Spot node, gp.vs2.2xlarge, is 16 vCPU and 64 GiB, so the equivalent here is 2 nodes rather than one.

Spot runs as managed Kubernetes, so a 2-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 32 cores and 128 GiB in one process, it does not.

No local diskm8idn.8xlarge comes with 1 × 1,900 GB NVMe SSD attached to the machine. Spot nodes use network storage only, so that disk doesn't come with it. If you were using it as fast scratch space, you'd move to a persistent volume or object storage, which are slower to read.
Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$3.055$1.498$0.082
$2.973 savings
US Central, Chicagono AWS region$0.082
US Central, Dallasno AWS region$0.102
Hong Kong$0.022
Sydney, Australia$0.322
London, UK$0.442
US West, San Jose$0.302
US Central, Dallas 2no AWS region$0.002
US East, N. Virginia 2$3.055$1.498$0.302
$2.753 savings
When to use it
Good for
  • ●Development, staging and CI environments
  • ●Small to mid-size relational databases
  • ●Backend services with no single dominant resource
  • ●Workloads that fit inside 128 GiB of RAM
  • ●Jobs that want 1 × 1,900 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at 50 Gigabit
  • ●Anything that shards cleanly across 2 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●The working set needs more than 128 GiB of RAM
  • ●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
  • ●The work is single-threaded. Most of these 32 vCPU would sit idle.
$2,230/mo on AWS on-demand against $60/mo on Rackspace Spot for the 2-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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