Amazon EC2 C6i Instances

Compute optimized instances powered by 3rd generation Intel Xeon Scalable processors

Amazon EC2 C6i instances are powered by 3rd generation Intel Xeon Scalable processors and deliver up to 15% better price performance compared to C5 instances for a wide variety of workloads. C6i instances feature a 2:1 ratio of memory to vCPU, just like C5 instances and support up to 128 vCPUs per instance, which is 33% more than C5 instances. These instances feature twice the networking bandwidth of C5 instances, and are an ideal fit for compute-intensive workloads such as batch processing, distributed analytics, high performance computing (HPC), ad serving, highly scalable multiplayer gaming, and video encoding.

C6i processor

AWS and Intel have a long-standing relationship dedicated to developing, building, and supporting cloud services that are designed to meet current and future computing requirements for our customers. Please visit the AWS/Intel partner page for more information.

Benefits

Lower TCO

C6i instances deliver up to 15% better price performance than C5 instances. C6i instances also offer new larger sizes with up to 128 vCPUs and 256 GiB of memory, enabling customers to consolidate workloads on less instances.

Flexibility and choice

C6i instances add to the broadest and deepest selection of EC2 instances in the cloud and provide customers 10 different instance sizes that feature varying amount of vCPU, memory, networking, and storage. This enables customers to run a broad range of compute-intensive workloads.

Maximized resource efficiency

C6i instances are built on the AWS Nitro System, a combination of dedicated hardware and lightweight hypervisor which delivers practically all of the compute and memory resources of the host hardware to your instances for better overall performance and security.

Features

Powered by 3rd Generation Intel Xeon Scalable processors

C6i instances are powered by 3rd generation Intel Xeon Scalable processors (code named Ice Lake) with an all-core turbo frequency of 3.5 GHz, and include support for always-on memory encryption using Intel Total Memory Encryption (TME). C6i instances also support new Intel Advanced Vector Extensions (AVX 512) instructions for faster execution of cryptographic algorithms.

High performance

C6i instances support 40 Gbps bandwidth to Amazon Elastic Block Store (EBS) in the largest size and up to 10 Gbps in the four smallest sizes, which is more than double that of C5 instances. C6i instances also support up to 50 Gbps networking, which is twice that of C5 instances. C6i instances provide up to 9% higher memory bandwidth per vCPU compared to C5 instances. Customers can also enable Elastic Fabric Adapter (EFA) on the 32xlarge and metal sizes of C6i.

Built on AWS Nitro System

The AWS Nitro System is a rich collection of building blocks that offloads many of the traditional virtualization functions to dedicated hardware and software to deliver high performance, high availability, and high security while also reducing virtualization overhead.

Product Details

Amazon EC2 C6i instances are powered by 3rd generation Intel Xeon Scalable processors and are an ideal fit for compute-intensive workloads.

Instance Size vCPU Memory (GiB) Instance Storage (GiB) Network Bandwidth (Gbps) EBS Bandwidth (Gbps)

c6i.large

2

4

EBS-Only

Up to 12.5

Up to 10

c6i.xlarge

4

8

EBS-Only

Up to 12.5

Up to 10

c6i.2xlarge

8

16

EBS-Only

Up to 12.5

Up to 10

c6i.4xlarge

16

32

EBS-Only

Up to 12.5

Up to 10

c6i.8xlarge

32

64

EBS-Only

12.5

10

c6i.12xlarge

48

96

EBS-Only

18.75

15

c6i.16xlarge

64

128

EBS-Only

25

20

c6i.24xlarge

96

192

EBS-Only

37.5

30

c6i.32xlarge

128

256

EBS-Only

50

40

c6i.metal 128 256 EBS-Only 50 40

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