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 Name | c6i.8xlarge |
| vCPUs | 32 |
| Memory | 64 GiB |
| Memory per vCPU | 2 GiB |
| Processor | Intel Xeon 8375C |
| Clock speed | 3 GHz |
| CPU architecture | x86-64 |
| Network performance | 12.5 Gbps |
| EBS max bandwidth | 10 Gbps |
| EBS throughput | 1250 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 |
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 Name | c6i.8xlarge |
| vCPUs | 32 |
| Memory | 64 GiB |
| Memory per vCPU | 2 GiB |
| Storage | 1900 GB NVMe SSD |
| Processor | Intel Xeon 8375C |
| Clock speed | 3 GHz |
| CPU architecture | x86-64 |
| Network performance | 12.5 Gbps |
| EBS max bandwidth | 10 Gbps |
| EBS throughput | 1250 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 |
Amazon EC2 C6i and C6id product details and pricing
| Instance | CPU | Memory (GiB) | Instance Storage (GB) | Network Bandwidth (Gbps) | EBS Bandwidth (Mbps) | On-Demand hourly rate for US East |
| c6i.large | 2 | 4 | EBS-only | Up to 12.5 | Up to 10 | $0.09 |
| c6i.xlarge | 4 | 8 | EBS-only | Up to 12.5 | Up to 10 | $0.17 |
| c6i.2xlarge | 8 | 16 | EBS-only | Up to 12.5 | Up to 10 | $0.34 |
| c6i.4xlarge | 16 | 32 | EBS-only | Up to 12.5 | Up to 10 | $0.68 |
| c6i.8xlarge | 32 | 64 | EBS-only | 12.5 | 10 | $1.36 |
| c6i.12xlarge | 48 | 96 | EBS-only | 18.75 | 15 | $2.04 |
| c6i.16xlarge | 64 | 128 | EBS-only | 25 | 20 | $2.72 |
| c6i.24xlarge | 96 | 192 | EBS-only | 37.5 | 30 | $4.08 |
| c6i.32xlarge | 128 | 256 | EBS-only | 50 | 40 | $5.44 |
| c6i.metal | 128 | 256 | EBS-only | 50 | 40 | $5.44 |
| c6id.large | 2 | 4 | 1×118 NVMe SSD | Up to 12.5 | Up to 10 | $0.10 |
| c6id.xlarge | 4 | 8 | 1×237 NVMe SSD | Up to 12.5 | Up to 10 | $0.20 |
| c6id.2xlarge | 8 | 16 | 1×474 NVMe SSD | Up to 12.5 | Up to 10 | $0.40 |
| c6id.4xlarge | 16 | 32 | 1×950 NVMe SSD | Up to 12.5 | Up to 10 | $0.81 |
| c6id.8xlarge | 32 | 64 | 1×1900 NVMe SSD | 12.5 | 10 | $1.61 |
| c6id.12xlarge | 48 | 96 | 2×1425 NVMe SSD | 18.75 | 15 | $2.42 |
| c6id.16xlarge | 64 | 128 | 2×1900 NVMe SSD | 25 | 20 | $3.23 |
| c6id.24xlarge | 96 | 192 | 4×1425 NVMe SSD | 37.5 | 30 | $4.84 |
| c6id.32xlarge | 128 | 256 | 4×1900 NVMe SSD | 50 | 40 | $6.45 |
| c6id.metal | 128 | 256 | 4×1900 NVMe SSD | 50 | 40 | $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
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