Why Amazon EC2 C5 Instances?
Amazon EC2 C5 instances deliver cost-effective high performance at a low price per compute ratio for running advanced compute-intensive workloads. This includes workloads such as high-performance web servers, high-performance computing (HPC), batch processing, ad serving, highly scalable multiplayer gaming, video encoding, scientific modelling, distributed analytics and machine/deep learning inference. The C5 instances are available with a choice of processors from Intel and AMD.
Amazon EC2 C5a and C5ad Instances now available
C5a and C5ad instances are powered by custom 2nd generation up to 3.3 GHz AMD EPYC processors and provide additional options to help customers optimize both cost and performance for a variety of compute intensive workloads. The C5ad instances have local NVMe storage for workloads that require very low latency and storage access with high random read and write IOPS ability.
Bare metal variants, C5an.metal and C5adn.metal, are coming soon.
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Features
Product Details
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C5
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C5n
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C5a
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C5
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C5 and C5d instances feature either the 1st or 2nd generation Intel Xeon Platinum 8000 series processor (Skylake-SP or Cascade Lake) with a sustained all core Turbo CPU clock speed of up to 3.6 GHz. The new C5 and C5d 12xlarge, 24xlarge, and metal instance sizes feature the 2nd generation Intel Xeon Scalable Processors (Cascade Lake) with a sustained all-core Turbo CPU frequency of 3.6GHz. These instances provide up to 25 Gbps of network bandwidth and up to 19 Gbps of dedicated bandwidth to Amazon EBS. With C5d instances, local NVMe-based SSDs are physically connected to the host server and provide block-level storage that is coupled to the lifetime of the instance.
Model vCPU Memory (GiB) Instance Storage (GB) Network Bandwidth (Gbps)
EBS Bandwidth (Mbps) c5.large 2 4 EBS-Only Up to 10 Up to 4,750 c5.xlarge 4 8 EBS-Only Up to 10 Up to 4,750 c5.2xlarge 8 16 EBS-Only Up to 10 Up to 4,750 c5.4xlarge 16 32 EBS-Only Up to 10 4,750 c5.9xlarge 36 72 EBS-Only 10 9,500 c5.12xlarge 48 96 EBS-Only 12 9,500 c5.18xlarge 72 144 EBS-Only 25 19,000 c5.24xlarge 96 192 EBS-Only 25 19,000 c5.metal 96 192 EBS-Only 25 19,000 c5d.large 2 4 1 x 50 NVMe SSD Up to 10 Up to 4,750 c5d.xlarge 4 8 1 x 100 NVMe SSD Up to 10 Up to 4,750 c5d.2xlarge 8 16 1 x 200 NVMe SSD Up to 10 Up to 4,750 c5d.4xlarge 16 32 1 x 400 NVMe SSD Up to 10 4,750 c5d.9xlarge 36 72 1 x 900 NVMe SSD 10 9,500 c5d.12xlarge 48 96 2 x 900 NVMe SSD 12 9,500 c5d.18xlarge 72 144 2 x 900 NVMe SSD 25 19,000 c5d.24xlarge 96 192 4 x 900 NVMe SSD 25 19,000 c5d.metal 96 192 4 x 900 NVMe SSD 25 19,000 -
C5n
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C5n instances feature the Intel Xeon Platinum 8000 series (Skylake-SP) processor with a sustained all core Turbo CPU clock speed of up to 3.5 GHz. C5n instances provide up to 100 Gbps of network bandwidth and up to 19 Gbps of dedicated bandwidth to Amazon EBS. C5n instances also feature 33% higher memory footprint compared to C5 instances. C5n.18xlarge instances support Elastic Fabric Adapter (EFA) to run tightly-coupled HPC applications at scale on AWS.
Model vCPU Memory (GiB) Instance Storage (GB) Network Bandwidth (Gbps)
EBS Bandwidth (Mbps) c5n.large 2 5.25 EBS-Only Up to 25
Up to 4,750 c5n.xlarge 4 10.5 EBS-Only Up to 25 Up to 4,750 c5n.2xlarge 8 21 EBS-Only Up to 25 Up to 4,750 c5n.4xlarge 16 42 EBS-Only Up to 25 4,750 c5n.9xlarge 36 96
EBS-Only 50 9,500 c5n.18xlarge 72 192 EBS-Only 100 19,000 c5n.metal 72 192 EBS-Only 100 19,000 -
C5a
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C5a and C5ad instances offer leading x86 price/performance for a broad set of compute-intensive workloads and feature 2nd generation 3.3GHz AMD EPYC 7002 series processors built on a 7nm process node for increased efficiency. C5a and C5ad instances provide up to 20 Gbps of network bandwidth and 9.5 Gbps of dedicated bandwidth to Amazon EBS. With C5ad instances, local NVMe-based SSDs are physically connected to the host server and provide block-level storage that is coupled to the lifetime of the instance.
Model vCPU Memory (GiB)
Instance Storage (GB)
Network Bandwidth (Gbps)
EBS Bandwidth (Mbps)
c5a.large 2 4 EBS-Only Up to 10 Up to 3,170 c5a.xlarge 4 8 EBS-Only Up to 10 Up to 3,170 c5a.2xlarge 8 16 EBS-Only Up to 10 Up to 3,170 c5a.4xlarge 16 32 EBS-Only Up to 10 Up to 3,170 c5a.8xlarge 32 64 EBS-Only 10 3,170 c5a.12xlarge 48 96 EBS-Only 12 4,750 c5a.16xlarge 64 128 EBS-Only 20 6,300 c5a.24xlarge 96 192 EBS-Only 20 9,500 c5ad.large 2 4 1 x 75 NVMe SSD
Up to 10 Up to 3,170 c5ad.xlarge 4 8 1 x 150 NVMe SSD Up to 10 Up to 3,170 c5ad.2xlarge 8 16 1 x 300 NVMe SSD Up to 10 Up to 3,170 c5ad.4xlarge 16 32 2 x 300 NVMe SSD Up to 10 Up to 3,170 c5ad.8xlarge 32 64 2 x 600 NVMe SSD 10 3,170 c5ad.12xlarge 48 96 2 x 900 NVMe SSD 12 4,750 c5ad.16xlarge 64 128 2 x 1200 NVMe SSD 20 6,300 c5ad.24xlarge 96 192 2 x 1900 NVMe SSD 20 9,500
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