c5.18xlargevsc5n.18xlarge

c5.18xlarge is 21% cheaper than c5n.18xlarge on demand in US East (N. Virginia), saving $604.44 a month.

At a glancec5.18xlargec5n.18xlarge
On-demand$3.06/hr21% less$3.888/hr
Lowest rate$0.7464/hr25% lessSpot, can be interrupted$0.9928/hrSpot, can be interrupted
Size72 vCPUs, 144 GiB72 vCPUs, 192 GiB
ProcessorIntel Xeon Platinum 8124MIntel Xeon Platinum 8124M
Architecturex86_64x86_64

Prices in US East (N. Virginia)

“Off” is the discount against each type’s own on-demand price. Linux, USD per hour.

Optionc5.18xlargec5n.18xlargec5n.18xlarge vs c5.18xlarge
On-demandPay by the hour$3.06$3.888▲ 27%
SpotCan be interrupted76% off$0.746474% off$0.9928▲ 33%
1-yr reservedNo upfront37% off$1.92837% off$2.449▲ 27%
3-yr reservedNo upfront58% off$1.28264% off$1.412▲ 10%
1-yr savings planHourly commitment28% off$2.21728% off$2.817▲ 27%
3-yr savings planHourly commitment52% off$1.47758% off$1.626▲ 10%

Key differences

The biggest lead each one has.

Where c5.18xlarge leads
On-demand price$3.06 vs $3.888 per hour
21% cheaper
Clock speed3.4 GHz vs 3 GHz
13% higher
Where c5n.18xlarge leads
Network baseline100 Gbps vs 25 Gbps
4× higher
Memory (GiB)192 vs 144
33% higher

Specs

9 of 41 specs differ. Those are in bold.

Compute1 of 11 differc5.18xlargec5n.18xlarge
vCPUs7272
Physical cores3636
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8124MIntel Xeon Platinum 8124M
CPU makerIntelIntel
Clock speed3.4 GHz3 GHz
Sustained clock3.4 GHz3.4 GHz
Processor featuresIntel AVX; Intel AVX2; Intel AVX512; Intel TurboIntel AVX; Intel AVX2; Intel AVX512; Intel Turbo
BurstableNoNo
ECU281281
Memory1 of 1 differc5.18xlargec5n.18xlarge
Memory (GiB)144192
Networking4 of 8 differc5.18xlargec5n.18xlarge
Network25 Gigabit100 Gigabit
Network baseline25 Gbps100 Gbps
Network peak25 Gbps100 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoYes
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage1 of 11 differc5.18xlargec5n.18xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput9000 Mbps14000 Mbps
EBS baseline bandwidth19,000 Mbps19,000 Mbps
EBS max bandwidth19,000 Mbps19,000 Mbps
EBS baseline throughput2,375 MB/s2,375 MB/s
EBS max throughput2,375 MB/s2,375 MB/s
EBS baseline IOPS80,00080,000
EBS max IOPS80,00080,000
Max EBS volumes2727
Instance details2 of 10 differc5.18xlargec5n.18xlarge
Familyc5c5n
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor144144
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesNo
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for c5.18xlarge first. Linux, USD per hour.

Regionc5.18xlargec5n.18xlargeDifference
Asia Pacific (Mumbai)ap-south-1$3.06$3.888▲ 27%
US East (N. Virginia)Used in summaryus-east-1$3.06$3.888▲ 27%
US East (Ohio)us-east-2$3.06$3.888▲ 27%
US West (Oregon)us-west-2$3.06$3.888▲ 27%
EU (Stockholm)eu-north-1$3.276$4.176▲ 27%
Canada (Central)ca-central-1$3.348$4.248▲ 27%
Asia Pacific (Seoul)ap-northeast-2$3.456$4.392▲ 27%
EU (Ireland)eu-west-1$3.456$4.392▲ 27%
EU (Frankfurt)eu-central-1$3.492$4.428▲ 27%
Asia Pacific (Jakarta)ap-southeast-3$3.528$4.464▲ 27%
Asia Pacific (Singapore)ap-southeast-1$3.528$4.464▲ 27%
EU (London)eu-west-2$3.636$4.608▲ 27%
EU (Milan)eu-south-1$3.636$4.644▲ 28%
EU (Paris)eu-west-3$3.636$4.608▲ 27%
AWS GovCloud (US-East)us-gov-east-1$3.672$4.68▲ 27%
AWS GovCloud (US-West)us-gov-west-1$3.672$4.68▲ 27%
Middle East (Bahrain)me-south-1$3.802$4.824▲ 27%
US West (N. California)us-west-1$3.816$4.86▲ 27%
Asia Pacific (Osaka)ap-northeast-3$3.852$4.896▲ 27%
Asia Pacific (Tokyo)ap-northeast-1$3.852$4.896▲ 27%
Asia Pacific (Hong Kong)ap-east-1$3.888$5.148▲ 32%
Asia Pacific (Sydney)ap-southeast-2$3.996$5.076▲ 27%
Africa (Cape Town)af-south-1$4.104$5.227▲ 27%
South America (Sao Paulo)sa-east-1$4.716$5.976▲ 27%

Keep exploring

Each type’s own page, and how it compares with others.

c5.18xlargeCompute optimized, c5 family
c5.18xlarge prices and specsEvery size in the c5 family

Compare c5.18xlarge with

c5d.18xlarge
c5n.18xlargeCompute optimized, c5n family
c5n.18xlarge prices and specsEvery size in the c5n family

Pay the committed rate, with commitment protection

The best committed rate on these two is 58–64% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

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AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.