c5a.16xlargevsc5ad.16xlarge

c5a.16xlarge is 10% cheaper than c5ad.16xlarge on demand in US East (N. Virginia), saving $210.24 a month.

At a glancec5a.16xlargec5ad.16xlarge
On-demand$2.464/hr10% less$2.752/hr
Lowest rate$0.7715/hrSpot, can be interrupted$0.5734/hr26% lessSpot, can be interrupted
Size64 vCPUs, 128 GiB64 vCPUs, 128 GiB
ProcessorAMD EPYC 7R32AMD EPYC 7R32
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.

Optionc5a.16xlargec5ad.16xlargec5ad.16xlarge vs c5a.16xlarge
On-demandPay by the hour$2.464$2.752▲ 12%
SpotCan be interrupted69% off$0.771579% off$0.5734▼ 26%
1-yr reservedNo upfront37% off$1.55237% off$1.734▲ 12%
3-yr reservedNo upfront57% off$1.06457% off$1.189▲ 12%
1-yr savings planHourly commitment27% off$1.7928% off$1.991▲ 11%
3-yr savings planHourly commitment52% off$1.1952% off$1.332▲ 12%

Key differences

The biggest lead each one has.

Where c5a.16xlarge leads
On-demand price$2.464 vs $2.752 per hour
10% cheaper
Max EBS volumes27 vs 25
8% higher
Where c5ad.16xlarge leads

No clear lead on the measures we compare.

Specs

4 of 41 specs differ. Those are in bold.

ComputeAll 10 matchc5a.16xlargec5ad.16xlarge
vCPUs6464
Physical cores3232
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7R32AMD EPYC 7R32
CPU makerAMDAMD
Clock speed3.3 GHz3.3 GHz
Sustained clock3.3 GHz3.3 GHz
Processor featuresAMD Turbo; AVX; AVX2AMD Turbo; AVX; AVX2
BurstableNoNo
MemoryAll 1 matchc5a.16xlargec5ad.16xlarge
Memory (GiB)128128
NetworkingAll 8 matchc5a.16xlargec5ad.16xlarge
Network20 Gigabit20 Gigabit
Network baseline20 Gbps20 Gbps
Network peak20 Gbps20 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage3 of 12 differc5a.16xlargec5ad.16xlarge
StorageEBS only2 x 1200 NVMe SSD
Local disks–2 × 1,200 GB SSD
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput6300 Mbps6300 Mbps
EBS baseline bandwidth6,300 Mbps6,300 Mbps
EBS max bandwidth6,300 Mbps6,300 Mbps
EBS baseline throughput787.5 MB/s787.5 MB/s
EBS max throughput787.5 MB/s787.5 MB/s
EBS baseline IOPS26,70026,700
EBS max IOPS26,70026,700
Max EBS volumes2725
Instance details1 of 10 differc5a.16xlargec5ad.16xlarge
Familyc5ac5ad
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor128128
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoNo
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for c5a.16xlarge first. Linux, USD per hour.

Regionc5a.16xlargec5ad.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.464$2.752▲ 12%
US East (Ohio)us-east-2$2.464$2.752▲ 12%
US West (Oregon)us-west-2$2.464$2.752▲ 12%
EU (Ireland)eu-west-1$2.752$3.136▲ 14%
EU (Frankfurt)eu-central-1$2.784$3.20▲ 15%
Asia Pacific (Singapore)ap-southeast-1$2.816$3.232▲ 15%
EU (Milan)eu-south-1$2.912$3.296▲ 13%
Middle East (Bahrain)me-south-1$3.04$3.456▲ 14%
Asia Pacific (Sydney)ap-southeast-2$3.20$3.616▲ 13%
Africa (Cape Town)af-south-1$3.296$3.744▲ 14%
South America (Sao Paulo)sa-east-1$3.776$4.288▲ 14%

Keep exploring

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

c5a.16xlargeCompute optimized, c5a family
c5a.16xlarge prices and specsEvery size in the c5a family

Compare c5a.16xlarge with

m5a.16xlarger5a.16xlargec6a.16xlarge
c5ad.16xlargeCompute optimized, c5ad family
c5ad.16xlarge prices and specsEvery size in the c5ad family

Compare c5ad.16xlarge with

m5ad.16xlarger5ad.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 57% 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.