c5a.12xlargevsc5ad.12xlarge

c5a.12xlarge is 10% cheaper than c5ad.12xlarge on demand in US East (N. Virginia), saving $157.68 a month.

At a glancec5a.12xlargec5ad.12xlarge
On-demand$1.848/hr10% less$2.064/hr
Lowest rate$0.5765/hr16% lessSpot, can be interrupted$0.6838/hrSpot, can be interrupted
Size48 vCPUs, 96 GiB48 vCPUs, 96 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.12xlargec5ad.12xlargec5ad.12xlarge vs c5a.12xlarge
On-demandPay by the hour$1.848$2.064▲ 12%
SpotCan be interrupted69% off$0.576567% off$0.6838▲ 19%
1-yr reservedNo upfront37% off$1.16437% off$1.30▲ 12%
3-yr reservedNo upfront57% off$0.79857% off$0.892▲ 12%
1-yr savings planHourly commitment27% off$1.34328% off$1.493▲ 11%
3-yr savings planHourly commitment52% off$0.89252% off$0.999▲ 12%

Key differences

The biggest lead each one has.

Where c5a.12xlarge leads
On-demand price$1.848 vs $2.064 per hour
10% cheaper
Max EBS volumes27 vs 25
8% higher
Where c5ad.12xlarge leads

No clear lead on the measures we compare.

Specs

4 of 41 specs differ. Those are in bold.

ComputeAll 10 matchc5a.12xlargec5ad.12xlarge
vCPUs4848
Physical cores2424
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.12xlargec5ad.12xlarge
Memory (GiB)9696
NetworkingAll 8 matchc5a.12xlargec5ad.12xlarge
Network12 Gigabit12 Gigabit
Network baseline12 Gbps12 Gbps
Network peak12 Gbps12 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage3 of 12 differc5a.12xlargec5ad.12xlarge
StorageEBS only2 x 900 NVMe SSD
Local disks–2 × 900 GB SSD
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput4750 Mbps4750 Mbps
EBS baseline bandwidth4,750 Mbps4,750 Mbps
EBS max bandwidth4,750 Mbps4,750 Mbps
EBS baseline throughput593.75 MB/s593.75 MB/s
EBS max throughput593.75 MB/s593.75 MB/s
EBS baseline IOPS20,00020,000
EBS max IOPS20,00020,000
Max EBS volumes2725
Instance details1 of 10 differc5a.12xlargec5ad.12xlarge
Familyc5ac5ad
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor9696
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.12xlarge first. Linux, USD per hour.

Regionc5a.12xlargec5ad.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$1.848$2.064▲ 12%
US East (Ohio)us-east-2$1.848$2.064▲ 12%
US West (Oregon)us-west-2$1.848$2.064▲ 12%
EU (Ireland)eu-west-1$2.064$2.352▲ 14%
EU (Frankfurt)eu-central-1$2.088$2.40▲ 15%
Asia Pacific (Singapore)ap-southeast-1$2.112$2.424▲ 15%
EU (Milan)eu-south-1$2.184$2.472▲ 13%
Middle East (Bahrain)me-south-1$2.28$2.592▲ 14%
Asia Pacific (Sydney)ap-southeast-2$2.40$2.712▲ 13%
Africa (Cape Town)af-south-1$2.472$2.808▲ 14%
South America (Sao Paulo)sa-east-1$2.832$3.216▲ 14%

Keep exploring

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

c5a.12xlargeCompute optimized, c5a family
c5a.12xlarge prices and specsEvery size in the c5a family

Compare c5a.12xlarge with

c5.12xlargem5a.12xlarger5a.12xlargec6a.12xlarge
c5ad.12xlargeCompute optimized, c5ad family
c5ad.12xlarge prices and specsEvery size in the c5ad family

Compare c5ad.12xlarge with

c5d.12xlargem5ad.12xlarger5ad.12xlarge

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.