Instances›AWS EC2›r5›r5.large
Compute
vCPUs2
Memory16 GiB
Mem / vCPU8.00 GiB
ProcessorXeon Platinum 8175
Clock speed3.1 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth4,750 Mbps
Throughput593.75 MB/s
IOPS18,750
Networking
PerformanceUp to 10 Gigabit
Max ENIs3
IPv6Yes
GPUNone
Family sizes
r5.large2 vCPU · 16 GiB
r5.xlarge4 vCPU · 32 GiB
r5.2xlarge8 vCPU · 64 GiB
r5.4xlarge16 vCPU · 128 GiB
r5.8xlarge32 vCPU · 256 GiB
r5.12xlarge48 vCPU · 384 GiB
r5.16xlarge64 vCPU · 512 GiB
r5.24xlarge96 vCPU · 768 GiB
r5.metal96 vCPU · 768 GiB
r5.large

r5.large is AWS's memory-optimized EC2 size at 2 vCPU and 16 GiB. In the name, "r" stands for RAM, "5" is the generation and "large" is the size within the r5 family. It runs on Intel Xeon Platinum 8175 at 3.1 GHz, and AWS introduced it in July 2018. AWS has since shipped r6i, r7i, r8i and r9g; r6i.large is the direct replacement at this size, scoring 36,254 CoreMark/s against this instance's 29,156 — roughly 24% more throughput for the same vCPU count. On Rackspace Spot the same shape is mh.vs1.medium — 2 vCPU, 16 GiB, matched on both dimensions, 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$0.042$0.079$0.054$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$0.050$0.095$0.065$0.011
$0.140 savings
London, UK$0.148$0.045$0.093$0.064$0.011
$0.137 savings
US West, San Jose$0.140$0.041$0.088$0.060$0.031
$0.109 savings
US Central, Dallas 2no AWS region$0.031
When to use it
Good for
  • ●In-memory caches such as Redis and Memcached
  • ●Large JVM heaps and application servers that hold state
  • ●OLAP and business intelligence query engines
  • ●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 10 Gigabit
Avoid if
  • ●Starting a new deployment. r6i.large is the newer generation at this size.
  • ●The working set needs more than 16 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
  • ●Local NVMe or instance-store disk is a hard requirement
  • ●GPU or FPGA acceleration is needed
$92/mo on AWS on-demand against $8/mo on Rackspace Spot for the equivalent — market-priced, not list-priced.
  • 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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