AWS introduced EC2 C6i instances in October 2021 as a generational improvement over the C5 family of compute-intensive instances. All C6i and C6id instances are powered by third-generation Intel Xeon 8375C (Ice Lake) scalable (up to 3.5 GHz) processors, and are optimized for use with EBS storage and enhanced networking.

In addition to offering up to 15% better compute performance for the same spend, the C6i family also boasts always-on, transient-key memory encryption through Intel Total Memory Encryption (TME). To enable maximum resource efficiency, C6i instances are built on the AWS Nitro System (dedicated hardware running a minimal hypervisor to maximize the amount of memory and CPU available to your instances). Finally, C6i instances support Intel Advanced Vector Extensions (AVX-512) to enable the quickest execution of cryptographic algorithms.

When to use Amazon EC2 c6i instances

C6i instance high-performance Intel processors are ideal for compute-intensive use cases like:

  • Workload batch processing
  • Media transcoding
  • Video encoding
  • High-performance computing (HPC)
  • Scientific modeling
  • Gaming servers, including large-scale multiplayer gaming
  • Advertising servers
  • Machine learning inference
  • Distributed analytics

Cloud cost management from Anodot automatically recommends when an older-generation instance (like one in the EC2 C5 family) should be upgraded to a C6i instance for your compute-intensive workload.

Amazon EC2 c6i.8xlarge details and pricing options

Amazon EC2 c6i.8xlarge instances are compute-optimized, running on Intel Xeon 8375C (Ice Lake) processors, and offer 32 vCPUs, 64 GiB of memory, and 12 Gibps of bandwidth.

API Namec6i.8xlarge
vCPUs32
Memory64 GiB
Memory per vCPU2 GiB
ProcessorIntel Xeon 8375C
Clock speed3 GHz
CPU architecturex86-64
Network performance12.5 Gbps
EBS max bandwidth10 Gbps
EBS throughput1250 MB/s
Linux On-Demand pricing$1.3600 per Hour
Linux 1 year Reserved pricing$0.8568 per Hour
Linux 3 year Reserved pricing$0.5544 per Hour
Linux Spot pricing $0.6544 per Hour
* Prices shown are for the US East (Northern Virginia) AWS Region. Prices for reserved instances are for 1-year and 3-year “Partial Upfront” payment options.

Amazon EC2 C6id instances

Introduced in May 2022, C6id instances add the ability to the C6i family to leverage up to 7.6 TB of local NVMe-based solid state drive (SSD) block-level storage. They offer significant improvement in performance-for-price over previous-generation C5d compute-intensive SSD instances.

High level benefits over C5d instances include:

  • Up to 15% performance-for-price
  • 138% higher TB storage per vCPU
  • 56% lower cost per TB
  • Always-on memory encryption using Intel Total Memory Encryption (TME)
  • Up to 50 Gbps of networking speed 
  • Up to 40 Gbps of bandwidth to Amazon EBS

The largest c6id.32xlarge size is compatible with the Elastic Fabric Adapter (EFA) EC2 network interface to allow low-latency, highly-scalable inter-node communication.

When to use Amazon EC2 C6id instances

Since C6id instances are calibrated to benefit compute-intensive workloads and those that require high-speed, low-latency local storage, they are especially tuned for use cases like:

  • Raster image manipulation and processing
  • Video processing and encoding
  • Multimedia processing and encoding
  • Batch processing of large datasets
  • Large log file processing
  • Apps that need efficient, sizable caches and scratch disks

Anodot cloud cost management will automatically recommend when an EC2 C6id instance is an optimal match for your compute-intensive workload.

Amazon EC2 c6id.8large details and pricing options

API Namec6i.8xlarge
vCPUs32
Memory64 GiB
Memory per vCPU2 GiB
Storage1900 GB NVMe SSD
ProcessorIntel Xeon 8375C
Clock speed3 GHz
CPU architecturex86-64
Network performance12.5 Gbps
EBS max bandwidth10 Gbps
EBS throughput1250 MB/s
Linux On-Demand pricing$1.6128 per Hour
Linux 1 year Reserved pricing$1.0164 per Hour
Linux 3 year Reserved pricing$0.6240 per Hour
Linux Spot pricing $0.5637 per Hour
* Prices shown are for the US East (Northern Virginia) AWS Region. Prices for reserved instances are for 1-year and 3-year “Partial Upfront” payment options.

Amazon EC2 C6i and C6id product details and pricing

InstanceCPUMemory (GiB)Instance Storage (GB)Network Bandwidth (Gbps)EBS Bandwidth (Mbps)On-Demand hourly rate for US East
c6i.large24EBS-onlyUp to 12.5Up to 10$0.09
c6i.xlarge48EBS-onlyUp to 12.5Up to 10$0.17
c6i.2xlarge816EBS-onlyUp to 12.5Up to 10$0.34
c6i.4xlarge1632EBS-onlyUp to 12.5Up to 10$0.68
c6i.8xlarge3264EBS-only12.510$1.36
c6i.12xlarge4896EBS-only18.7515$2.04
c6i.16xlarge64128EBS-only2520$2.72
c6i.24xlarge96192EBS-only37.530$4.08
c6i.32xlarge128256EBS-only5040$5.44
c6i.metal128256EBS-only5040$5.44
c6id.large241×118 NVMe SSDUp to 12.5Up to 10$0.10
c6id.xlarge481×237 NVMe SSDUp to 12.5Up to 10$0.20
c6id.2xlarge8161×474 NVMe SSDUp to 12.5Up to 10$0.40
c6id.4xlarge16321×950 NVMe SSDUp to 12.5Up to 10$0.81
c6id.8xlarge32641×1900 NVMe SSD12.510$1.61
c6id.12xlarge48962×1425 NVMe SSD18.7515$2.42
c6id.16xlarge641282×1900 NVMe SSD2520$3.23
c6id.24xlarge961924×1425 NVMe SSD37.530$4.84
c6id.32xlarge1282564×1900 NVMe SSD5040$6.45
c6id.metal1282564×1900 NVMe SSD5040$6.45

C6i and C6id instances are available through the following purchasing options:

  • On-Demand Instances
  • Savings Plans
  • Reserved Instances
  • Spot Instances

Written by Anodot

Anodot is the leader in Autonomous Business Monitoring. Data-driven companies use Anodot's machine learning platform to detect business incidents in real time, helping slash time to detection by as much as 80 percent and reduce alert noise by as much as 95 percent. Thus far, Anodot has helped customers reclaim millions in time and revenue.

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