Instances›AWS EC2›i3en›i3en.3xlarge
Compute
vCPUs12
Memory96 GiB
Mem / vCPU8.00 GiB
ProcessorXeon Platinum 8175
Clock speed3.1 GHz
Architecturex86_64
Storage
Type1 × 7,500 GB NVMe SSD
Bandwidth4,750 Mbps
Throughput593.75 MB/s
IOPS20,000
Networking
PerformanceUp to 25 Gigabit
Max ENIs4
IPv6Yes
GPUNone
Family sizes
i3en.large2 vCPU · 16 GiB
i3en.xlarge4 vCPU · 32 GiB
i3en.2xlarge8 vCPU · 64 GiB
i3en.3xlarge12 vCPU · 96 GiB
i3en.6xlarge24 vCPU · 192 GiB
i3en.12xlarge48 vCPU · 384 GiB
i3en.24xlarge96 vCPU · 768 GiB
i3en.metal96 vCPU · 768 GiB
i3en.3xlarge

The i3en.3xlarge is a storage-optimized AWS EC2 instance: 12 vCPU and 96 GiB of memory, 8.00 GiB per vCPU. In the name, "i" is I/O, meaning local storage, "3" is the generation, "en" marks extended capacity and enhanced networking and "3xlarge" is the size within the i3en family. It runs on Intel Xeon Platinum 8175 at 3.1 GHz, and AWS introduced it in May 2019. AWS has since shipped i4i, i7i and i8g; i7ie.3xlarge is the direct replacement at this size, scoring 270,621 CoreMark/s against this instance's 184,483 — roughly 47% more throughput for the same vCPU count. The nearest Spot node is mh.vs1.2xlarge at 16 vCPU and 128 GiB — 4 more vCPU and 32 GiB more memory, $1.36/hr on AWS in US East (N. Virginia), from $0.021/hr on Rackspace Spot.

Match qualityNo local disk

i3en.3xlarge comes with 1 × 7,500 GB NVMe SSD attached to the machine. Rackspace Spot nodes use network storage only, so that disk does not come with it.

If you were using the local disk as fast scratch space — temporary files, a local cache, an index — you will need a persistent volume or object storage instead, and both are slower to read. If it was just extra space you never depended on, nothing changes.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$1.356$0.389$0.924$0.590$0.021
$1.335 savings
US Central, Chicagono AWS region$0.021
US Central, Dallasno AWS region$0.131
Hong Kong$1.790$1.224$0.779$0.021
$1.769 savings
Sydney, Australia$1.626$0.375$1.112$0.708$0.021
$1.605 savings
London, UK$1.578$0.387$1.079$0.686$0.131
$1.447 savings
US West, San Jose$1.500$0.224$1.024$0.652$0.002
$1.498 savings
US Central, Dallas 2no AWS region$0.242
When to use it
Good for
  • ●Data warehousing and log processing
  • ●Distributed file systems and search indexes
  • ●Transactional databases with heavy random I/O
  • ●Workloads that fit inside 96 GiB of RAM
  • ●Jobs that want 1 × 7,500 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at Up to 25 Gigabit
Avoid if
  • ●Starting a new deployment. i7ie.3xlarge is the newer generation at this size.
  • ●The working set needs more than 96 GiB of RAM
  • ●GPU or FPGA acceleration is needed
  • ●Workloads that never touch local disk. The instance-store premium is wasted.
  • ●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 $990/mo on AWS vs $15/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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