Instances›AWS EC2›r7a›r7a.32xlarge
Compute
vCPUs128
Memory1024 GiB
Mem / vCPU8.00 GiB
ProcessorEPYC 9R14 Processor
Clock speedUp to 3.7 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth40,000 Mbps
Throughput5000 MB/s
IOPS160,000
Networking
Performance50 Gigabit
Max ENIs15
IPv6Yes
GPUNone
Family sizes
r7a.medium1 vCPU · 8 GiB
r7a.large2 vCPU · 16 GiB
r7a.xlarge4 vCPU · 32 GiB
r7a.2xlarge8 vCPU · 64 GiB
r7a.4xlarge16 vCPU · 128 GiB
r7a.8xlarge32 vCPU · 256 GiB
r7a.12xlarge48 vCPU · 384 GiB
r7a.16xlarge64 vCPU · 512 GiB
r7a.24xlarge96 vCPU · 768 GiB
r7a.32xlarge128 vCPU · 1024 GiB
r7a.48xlarge192 vCPU · 1536 GiB
r7a.metal-48xl192 vCPU · 1536 GiB
r7a.32xlarge

The r7a.32xlarge is a memory-optimized AWS EC2 instance: 128 vCPU and 1024 GiB of memory, 8.00 GiB per vCPU. In the name, "r" stands for RAM, "7" is the generation, "a" marks AMD processors and "32xlarge" is the size within the r7a family. It runs on AMD EPYC 9R14 Processor at Up to 3.7 GHz, and AWS introduced it in September 2023. AWS has since shipped r8a and r9g; r8i.32xlarge is the direct replacement at this size. No single Spot node covers 128 vCPU and 1024 GiB, so the equivalent is a fleet: 8 × mh.vs1.2xlarge, 128 vCPU and 1024 GiB in total, $9.74/hr on AWS in US East (N. Virginia), from $0.168/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

r7a.32xlarge gives you 128 vCPU and 1,024 GiB in a single machine. The largest comparable Spot node, mh.vs1.2xlarge, is 16 vCPU and 128 GiB, so the equivalent here is 8 nodes rather than one.

Spot runs as managed Kubernetes, so a 8-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 128 cores and 1,024 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$9.738$2.072$6.441$4.417$0.168
$9.570 savings
US Central, Chicagono AWS region$0.168
US Central, Dallasno AWS region$1.048
Hong Kong$0.168
Sydney, Australia$0.168
London, UK$1.048
US West, San Jose$0.016
US Central, Dallas 2no AWS region$1.936
When to use it
Good for
  • ●Real-time analytics over hot datasets
  • ●Database instances that keep the working set in RAM
  • ●Graph and search workloads with large indexes
  • ●Workloads that fit inside 1024 GiB of RAM
  • ●Parallel work that can occupy 128 vCPU
  • ●Network-heavy services — AWS rates this size at 50 Gigabit
  • ●Anything that shards cleanly across 8 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●Starting a new deployment. r8i.32xlarge is the newer generation at this size.
  • ●The working set needs more than 1024 GiB of RAM
  • ●CPU-bound work. You are paying for memory this workload will not use.
  • ●More than 8.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●The work is single-threaded. Most of these 128 vCPU would sit idle.
  • ●Local NVMe or instance-store disk is a hard requirement
Stop overpaying AWS. This compute costs $7,108/mo on AWS vs $123/mo on Rackspace Spot.
  • 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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