Instances›AWS EC2›m6in›m6in.8xlarge
Compute
vCPUs32
Memory128 GiB
Mem / vCPU4.00 GiB
ProcessorXeon 8375C
Clock speed3.5 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth25,000 Mbps
Throughput3125 MB/s
IOPS100,000
Networking
Performance50 Gigabit
Max ENIs8
IPv6Yes
GPUNone
Family sizes
m6in.large2 vCPU · 8 GiB
m6in.xlarge4 vCPU · 16 GiB
m6in.2xlarge8 vCPU · 32 GiB
m6in.4xlarge16 vCPU · 64 GiB
m6in.8xlarge32 vCPU · 128 GiB
m6in.12xlarge48 vCPU · 192 GiB
m6in.16xlarge64 vCPU · 256 GiB
m6in.24xlarge96 vCPU · 384 GiB
m6in.32xlarge128 vCPU · 512 GiB
m6in.metal128 vCPU · 512 GiB
m6in.8xlarge

The m6in.8xlarge pairs 32 vCPU with 128 GiB of RAM, the 4.00 GiB-per-vCPU ratio that marks a general-purpose instance. In the name, "m" is the general-purpose line, "6" is the generation, "in" marks Intel processors and enhanced networking and "8xlarge" is the size within the m6in family. It runs on Intel Xeon 8375C (Ice Lake) at 3.5 GHz, and AWS introduced it in November 2022. AWS has since shipped m7i, m8in and m9g; m7i.8xlarge is the direct replacement at this size, scoring 699,530 CoreMark/s against this instance's 568,283 — roughly 23% more throughput for the same vCPU count. Spot's node ladder tops out below this size, so m6in.8xlarge becomes 2 × gp.vs2.2xlarge (32 vCPU, 128 GiB combined), $2.23/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

m6in.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.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$2.228$0.672$1.403$0.859$0.082
$2.146 savings
US Central, Chicagono AWS region$0.082
US Central, Dallasno AWS region$0.102
Hong Kong$0.022
Sydney, Australia$2.808$0.817$1.769$1.201$0.322
$2.486 savings
London, UK$2.576$0.289$1.623$0.993$0.442
$2.134 savings
US West, San Jose$2.599$0.651$1.637$1.002$0.302
$2.297 savings
US Central, Dallas 2no AWS region$0.002
US East, N. Virginia 2$2.228$0.672$1.403$0.859$0.302
$1.926 savings
When to use it
Good for
  • ●Small to mid-size relational databases
  • ●Backend services with no single dominant resource
  • ●Queue workers and scheduled jobs
  • ●Workloads that fit inside 128 GiB of RAM
  • ●Parallel work that can occupy 32 vCPU
  • ●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
  • ●Starting a new deployment. m7i.8xlarge is the newer generation at this size.
  • ●The working set needs more than 128 GiB of RAM
  • ●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
Stop overpaying AWS. This compute costs $1,626/mo on AWS vs $60/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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