Instances›AWS EC2›r6i›r6i.large
Compute
vCPUs2
Memory16 GiB
Mem / vCPU8.00 GiB
ProcessorXeon 8375C
Clock speed3.5 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth10,000 Mbps
Throughput1250 MB/s
IOPS40,000
Networking
PerformanceUp to 12.5 Gigabit
Max ENIs3
IPv6Yes
GPUNone
Family sizes
r6i.large2 vCPU · 16 GiB
r6i.xlarge4 vCPU · 32 GiB
r6i.2xlarge8 vCPU · 64 GiB
r6i.4xlarge16 vCPU · 128 GiB
r6i.8xlarge32 vCPU · 256 GiB
r6i.12xlarge48 vCPU · 384 GiB
r6i.16xlarge64 vCPU · 512 GiB
r6i.24xlarge96 vCPU · 768 GiB
r6i.32xlarge128 vCPU · 1024 GiB
r6i.metal128 vCPU · 1024 GiB
r6i.large

The r6i.large is a memory-optimized AWS EC2 instance: 2 vCPU and 16 GiB of memory, 8.00 GiB per vCPU. In the name, "r" stands for RAM, "6" is the generation, "i" marks Intel processors and "large" is the size within the r6i family. It runs on Intel Xeon 8375C (Ice Lake) at 3.5 GHz, and AWS introduced it in November 2021. AWS has since shipped r7i, r8i and r9g; r7i.large is the direct replacement at this size, scoring 48,385 CoreMark/s against this instance's 36,254 — roughly 33% more throughput for the same vCPU count. Rackspace Spot's mh.vs2.medium is a like-for-like substitute at 2 vCPU and 16 GiB, about 91% below the US East (N. Virginia) on-demand rate.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$0.126$0.052$0.083$0.057$0.011
$0.115 savings
US Central, Chicagono AWS region$0.021
US Central, Dallasno AWS region$0.041
Hong Kong$0.167$0.105$0.072$0.002
$0.165 savings
Sydney, Australia$0.151$0.062$0.100$0.069$0.011
$0.140 savings
London, UK$0.148$0.051$0.098$0.067$0.011
$0.137 savings
US West, San Jose$0.140$0.050$0.093$0.064$0.031
$0.109 savings
US Central, Dallas 2no AWS region$0.031
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 16 GiB of RAM
  • ●Small, steady services that do not need more than 2 vCPU
  • ●Network-heavy services — AWS rates this size at Up to 12.5 Gigabit
Avoid if
  • ●Starting a new deployment. r7i.large is the newer generation at this size.
  • ●The working set needs more than 16 GiB of RAM
  • ●Local NVMe or instance-store disk is a hard requirement
  • ●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
Stop overpaying AWS. This compute costs $92/mo on AWS vs $8/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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