Amazon EC2 C5 Instances
Amazon EC2 C5 instances are the next generation of the Amazon EC2 Compute Optimized instance family. C5 instances offer the lowest price per vCPU in the Amazon EC2 family and are ideal 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.
High compute performance
C5 instances are powered by 3.0 GHz Intel Xeon Scalable processors, and allow a single core to run up to 3.5 GHz using Intel Turbo Boost Technology. C5 instances offer higher memory to vCPU ratio and deliver 25% improvement in price/performance compared to C4 instances, with certain applications delivering greater than 50% improvement. C5 instances provide support for the new Intel Advanced Vector Extensions 512 (AVX-512) instruction set, offering up to 2x the FLOPS per core per cycle compared to the previous generation C4 instances.
POWERED BY NEW HYPERVISOR
C5 instances are powered by a new lightweight hardware-accelerated hypervisor which delivers practically all of the compute and memory resources of the host hardware to the customer's instances.
High performance networking and storage
Next generation Elastic Network Adapter (ENA) and NVM Express (NVMe) technology provide C5 instances with high throughput, low latency interfaces for networking and Amazon Elastic Block Store (Amazon EBS). C5 instances offer up to 25 Gbps of network bandwidth and up to 14 Gbps of dedicated bandwidth to Amazon EBS. C5 instances also feature significantly higher networking and Amazon EBS performance on smaller instance sizes. With new 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 C5 instance.
Larger instance sizes
C5 instances introduce a new larger sized instance, c5.18xlarge. They provide 72 vCPU and 144 GiB of memory and deliver 25 Gbps of network bandwidth. It enables customers to effectively consolidate workloads.
|Model||vCPU||Memory (GiB)||Instance Storage (GiB)||EBS Bandwidth (Mbps)|
|c5.large||2||4||EBS-Only||Up to 3,500|
|c5.xlarge||4||8||EBS-Only||Up to 3,500|
|c5.2xlarge||8||16||EBS-Only||Up to 3,500|
|c5d.large||2||4||1 x 50 NVMe SSD||Up to 3,500|
|c5d.xlarge||4||8||1 x 100 NVMe SSD||Up to 3,500|
|c5d.2xlarge||8||16||1 x 200 NVMe SSD||Up to 3,500|
|c5d.4xlarge||16||32||1 x 400 NVMe SSD||3,500|
|c5d.9xlarge||36||72||1 x 900 NVMe SSD||7,000|
|c5d.18xlarge||72||144||2 x 900 NVMe SSD||14,000|