Instances›AWS EC2›r6in›r6in.32xlarge
Compute
vCPUs128
Memory1024 GiB
Mem / vCPU8.00 GiB
ProcessorXeon 8375C
Clock speed3.5 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth100,000 Mbps
Throughput12500 MB/s
IOPS400,000
Networking
Performance200 Gigabit
Max ENIs16
IPv6Yes
GPUNone
Family sizes
r6in.large2 vCPU · 16 GiB
r6in.xlarge4 vCPU · 32 GiB
r6in.2xlarge8 vCPU · 64 GiB
r6in.4xlarge16 vCPU · 128 GiB
r6in.8xlarge32 vCPU · 256 GiB
r6in.12xlarge48 vCPU · 384 GiB
r6in.16xlarge64 vCPU · 512 GiB
r6in.24xlarge96 vCPU · 768 GiB
r6in.32xlarge128 vCPU · 1024 GiB
r6in.metal128 vCPU · 1024 GiB
r6in.32xlarge

The r6in.32xlarge pairs 128 vCPU with 1024 GiB of RAM, the 8.00 GiB-per-vCPU ratio that marks a memory-optimized instance. In the name, "r" stands for RAM, "6" is the generation, "in" marks Intel processors and enhanced networking and "32xlarge" is the size within the r6in family. It runs on Intel Xeon 8375C (Ice Lake) at 3.5 GHz, and AWS introduced it in November 2022. AWS has since shipped r7i, r8in and r9g; r7a.32xlarge is the direct replacement at this size. Spot's node ladder tops out below this size, so r6in.32xlarge becomes 8 × mh.vs1.2xlarge (128 vCPU, 1024 GiB combined), $11.16/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

r6in.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$11.157$2.237$7.029$4.517$0.168
$10.989 savings
US Central, Chicagono AWS region$0.168
US Central, Dallasno AWS region$1.048
Hong Kong$0.168
Sydney, Australia$13.553$2.874$8.539$5.488$0.168
$13.385 savings
London, UK$1.048
US West, San Jose$0.016
US Central, Dallas 2no AWS region$1.936
When to use it
Good for
  • ●Graph and search workloads with large indexes
  • ●In-memory caches such as Redis and Memcached
  • ●Large JVM heaps and application servers that hold state
  • ●Workloads that fit inside 1024 GiB of RAM
  • ●Parallel work that can occupy 128 vCPU
  • ●Network-heavy services — AWS rates this size at 200 Gigabit
  • ●Anything that shards cleanly across 8 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●Starting a new deployment. r7a.32xlarge is the newer generation at this size.
  • ●The working set needs more than 1024 GiB of RAM
  • ●GPU or FPGA acceleration is needed
  • ●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.
Stop overpaying AWS. This compute costs $8,145/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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