Instances›AWS EC2›m7gd›m7gd.12xlarge
Compute
vCPUs48
Memory192 GiB
Mem / vCPU4.00 GiB
ProcessorGraviton3 Processor
Clock speed2.5 GHz
Architecturearm64
Storage
Type2 × 1,425 GB NVMe SSD
Bandwidth15,000 Mbps
Throughput1875 MB/s
IOPS60,000
Networking
Performance22.5 Gigabit
Max ENIs8
IPv6Yes
GPUNone
Family sizes
m7gd.medium1 vCPU · 4 GiB
m7gd.large2 vCPU · 8 GiB
m7gd.xlarge4 vCPU · 16 GiB
m7gd.2xlarge8 vCPU · 32 GiB
m7gd.4xlarge16 vCPU · 64 GiB
m7gd.8xlarge32 vCPU · 128 GiB
m7gd.12xlarge48 vCPU · 192 GiB
m7gd.16xlarge64 vCPU · 256 GiB
m7gd.metal64 vCPU · 256 GiB
m7gd.12xlarge

m7gd.12xlarge is AWS's general-purpose EC2 size at 48 vCPU and 192 GiB. In the name, "m" is the general-purpose line, "7" is the generation, "gd" marks AWS Graviton (ARM) processors and local NVMe storage and "12xlarge" is the size within the m7gd family. It runs on AWS Graviton3 Processor at 2.5 GHz, and AWS introduced it in July 2023. AWS has since shipped m8gd and m9gd; m8gd.12xlarge is the direct replacement at this size. The closest Spot shape is gp.vs2.2xlarge at 16 vCPU, so this instance maps to 3 of them — 48 vCPU and 192 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

m7gd.12xlarge gives you 48 vCPU and 192 GiB in a single machine. The largest comparable Spot node, gp.vs2.2xlarge, is 16 vCPU and 64 GiB, so the equivalent here is 3 nodes rather than one.

Spot runs as managed Kubernetes, so a 3-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 48 cores and 192 GiB in one process, it does not.

x86_64 onlym7gd.12xlarge is Graviton (arm64) and Rackspace Spot has no arm64 nodes, so you'd be moving to x86. You'll need x86 builds of your images, and per-core speed differs between the chips — worth testing before you decide how many nodes to run.
No local diskm7gd.12xlarge comes with 2 × 1,425 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$2.563$2.526$1.615$1.107$0.123
$2.440 savings
US Central, Chicagono AWS region$0.123
US Central, Dallasno AWS region$0.153
Hong Kong$0.033
Sydney, Australia$3.221$1.091$2.029$1.391$0.483
$2.738 savings
London, UK$2.971$0.297$1.872$1.284$0.663
$2.308 savings
US West, San Jose$3.016$0.690$1.900$1.303$0.453
$2.563 savings
US Central, Dallas 2no AWS region$0.003
US East, N. Virginia 2$2.563$2.526$1.615$1.107$0.453
$2.110 savings
When to use it
Good for
  • ●Web and application servers with mixed CPU and memory demand
  • ●Microservices and container fleets
  • ●Development, staging and CI environments
  • ●Workloads that fit inside 192 GiB of RAM
  • ●Jobs that want 2 × 1,425 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at 22.5 Gigabit
  • ●Anything that shards cleanly across 3 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●Starting a new deployment. m8gd.12xlarge is the newer generation at this size.
  • ●The working set needs more than 192 GiB of RAM
  • ●You cannot rebuild x86-only binaries or vendor images for aarch64
  • ●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
m7gd.12xlarge runs $1,871/mo on AWS on-demand. The 3-node equivalent on Rackspace Spot: $90/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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