AWS Amazon EC2

c5n.18xlarge

Part of the C5N Compute Optimized family — High-performance processors for compute-intensive applications.

Name:cCompute Optimized55th GenerationnEnhanced Networking18xlarge18 Extra Large

On-demand, Linux

$3.8880/ hr

~$2,838.24/mo · lowest in Asia Pacific (Mumbai), ap-south-1

Savings Plan, Linux

$1.6260/ hr

From, with a 3-year Compute Savings Plan, No Upfront: −58% vs on-demand rate (us-east-1)

Per unit

$0.0540/ vCPU-hr

$0.0203/GB-hr

Compute

72vCPUs

36 cores • x86_64

Memory

192GB

2.7 GB / vCPU

Network

100 Gbps

Baseline: 100 Gbps

Storage & EBS

2,375MB/s

Max: 80,000 IOPS

On Google Cloud

The nearest Google Cloud machines to c5n.18xlarge by vCPU and memory, at On-demand Linux rates in Northern Virginia (us-east-1 ↔ us-east4).

Machine	Size	On-demand Linux	vs c5n.18xlarge
c5n.18xlargeThis page · AWS, us-east-1	72 vCPU · 192 GiB	$3.8880/hr	—
c4-highcpu-9696 vCPU and 192 GiB for 72 vCPU and 192 GiB, the nearest size up; Intel on both; 36 physical cores vs 48	96 vCPU · 192 GiB	$4.082496/hr	5.0% more
n4-standard-8080 vCPU and 320 GiB for 72 vCPU and 192 GiB, the nearest size up; Intel on both; 36 physical cores vs 40	80 vCPU · 320 GiB	$3.6280/hr	6.7% less
n2-standard-8080 vCPU and 320 GiB for 72 vCPU and 192 GiB, the nearest size up; Intel on both; 36 physical cores vs 40	80 vCPU · 320 GiB	$4.37512/hr	13% more

Matched on vCPU and memory, then CPU vendor, then rate; a larger size is offered only when nothing is the same size. On-demand Linux only: Spot and commitments work differently on the two clouds, so they aren't compared here.

Technical Specifications & Limits

Hardware specs, container thresholds, and system limits

Compute & Processor

ProcessorIntel Xeon Platinum 8124M

Architecturex86_64 (x86_64)

vCPUs / Threads72 vCPUs

Physical Cores36

Clock Speed3 GHz

Intel AVX / AVX2AVX & AVX2 Supported

Intel Turbo BoostYes

Bare MetalNo (Virtualized)

Performance & Benchmarks

CoreMark Score1,160,775

CoreMark / vCPU16,121.9 / core

FFmpeg Transcoding187 FPS

CoreMark per Dollar298,553 score / $

Cost per vCPU-hr$0.0540

Cost per GB-hr$0.0203

Containers & Kubernetes

EKS Max Pods737 pods

Max ENIs15

IPv4/v6 per ENI50

Total Addressable IPs750 total IPs

CNI Prefix DelegationSupported (High Density)

Networking & Bandwidth

Network Performance100 Gbps

Baseline Bandwidth100 Gbps

Burst / Peak Bandwidth100 Gbps

Enhanced NetworkingYes

EFA SupportNo

IPv6 SupportNative Dual-Stack Supported

Storage & EBS Optimization

Storage ConfigurationEBS only

Local NVMe DiskNone (EBS only)

EBS Baseline Throughput2375 MB/s

EBS Max Throughput2375 MB/s

EBS Baseline IOPS80,000

EBS Max / Burst IOPS80,000

Dedicated EBS Throughput14000 Mbps

Platform & Architecture Details

Hypervisor / SystemAWS Nitro System (PCIe Offload)

Nitro EnclavesSupported (Isolated security enclaves)

Normalization Factor144

Generation StatusCurrent Generation (Recommended)

Rates by region

Live on-demand rates across all global AWS cloud regions

Lowest Price Region

$3.8880/ hr

Asia Pacific (Mumbai) (ap-south-1)

Highest Price Region

$5.9760/ hr

South America (Sao Paulo) (sa-east-1)

Global Fleet Average

$4.5933/ hr

Across all active regions

Regional Coverage

24regions

Available worldwide

Linux — Available in all 24 regions
Region	On-Demand Price	% vs On-Demand Rate
af-south-1 Africa (Cape Town)	$5.2270
ap-east-1 Asia Pacific (Hong Kong)	$5.1480
ap-southeast-3 Asia Pacific (Jakarta)	$4.4640
ap-south-1 Asia Pacific (Mumbai) Lowest	$3.8880
ap-northeast-3 Asia Pacific (Osaka)	$4.8960
ap-northeast-2 Asia Pacific (Seoul)	$4.3920
ap-southeast-1 Asia Pacific (Singapore)	$4.4640
ap-southeast-2 Asia Pacific (Sydney)	$5.0760
ap-northeast-1 Asia Pacific (Tokyo)	$4.8960
us-gov-east-1 AWS GovCloud (US-East)	$4.6800
us-gov-west-1 AWS GovCloud (US-West)	$4.6800
ca-central-1 Canada (Central)	$4.2480
eu-central-1 EU (Frankfurt)	$4.4280
eu-west-1 EU (Ireland)	$4.3920
eu-west-2 EU (London)	$4.6080
eu-south-1 EU (Milan)	$4.6440
eu-west-3 EU (Paris)	$4.6080
eu-north-1 EU (Stockholm)	$4.1760
me-south-1 Middle East (Bahrain)	$4.8240
sa-east-1 South America (Sao Paulo) Highest	$5.9760
us-east-1 US East (N. Virginia) Lowest	$3.8880
us-east-2 US East (Ohio) Lowest	$3.8880
us-west-1 US West (N. California)	$4.8600
us-west-2 US West (Oregon) Lowest	$3.8880

Windows — Available in all 24 regions
Region	On-Demand Price	% vs On-Demand Rate
af-south-1 Africa (Cape Town)	$8.5390
ap-east-1 Asia Pacific (Hong Kong)	$8.4600
ap-southeast-3 Asia Pacific (Jakarta)	$7.7760
ap-south-1 Asia Pacific (Mumbai) Lowest	$7.2000
ap-northeast-3 Asia Pacific (Osaka)	$8.2080
ap-northeast-2 Asia Pacific (Seoul)	$7.7040
ap-southeast-1 Asia Pacific (Singapore)	$7.7760
ap-southeast-2 Asia Pacific (Sydney)	$8.3880
ap-northeast-1 Asia Pacific (Tokyo)	$8.2080
us-gov-east-1 AWS GovCloud (US-East)	$7.9920
us-gov-west-1 AWS GovCloud (US-West)	$7.9920
ca-central-1 Canada (Central)	$7.5600
eu-central-1 EU (Frankfurt)	$7.7400
eu-west-1 EU (Ireland)	$7.7040
eu-west-2 EU (London)	$7.9200
eu-south-1 EU (Milan)	$7.9560
eu-west-3 EU (Paris)	$7.9200
eu-north-1 EU (Stockholm)	$7.4880
me-south-1 Middle East (Bahrain)	$8.1360
sa-east-1 South America (Sao Paulo) Highest	$9.2880
us-east-1 US East (N. Virginia) Lowest	$7.2000
us-east-2 US East (Ohio) Lowest	$7.2000
us-west-1 US West (N. California)	$8.1720
us-west-2 US West (Oregon) Lowest	$7.2000

Savings Plans: what to know

A Savings Plan commits you to a dollar amount per hour of spend for one or three years, not to an instance: usage up to that amount is billed at the plan's rates and the rest at on-demand, and unused commitment is still billed.
A Compute Savings Plan follows your usage across instance families, sizes, regions and operating systems; an EC2 Instance Savings Plan is locked to one family in one region in exchange for a lower rate (what that flexibility costs).
In US East (N. Virginia) (us-east-1), the 3-year Compute Savings Plan rate (No Upfront) for c5n.18xlarge on Linux is 42% of the on-demand rate, so the instance has to run at least 42% of the hours for the commitment to cost less than on-demand.
On Windows a plan discounts only the compute part of the rate: the Windows license part costs the same as on demand, so the percentage off is smaller than on Linux.
Rates are AWS's effective hourly rate for each payment option; All Upfront pays the whole term's commitment at purchase, which is why its hourly rate is lower; Partial Upfront (at least half up front) isn't shown on this page. The Savings Plans calculator has all three and sizes a commitment for this instance or a mix of them. How AWS applies a plan each hour: how Compute Savings Plans decide what they cover. Sizing one for elastic workloads: managing Compute Savings Plans.