c5a.12xlargevsc6a.12xlarge

c6a.12xlarge is 1% cheaper than c5a.12xlarge on demand in US East (N. Virginia), saving $8.76 a month.

At a glancec5a.12xlargec6a.12xlarge
On-demand$1.848/hr$1.836/hr1% less
Lowest rate$0.5765/hr4% lessSpot, can be interrupted$0.6006/hrSpot, can be interrupted
Size48 vCPUs, 96 GiB48 vCPUs, 96 GiB
ProcessorAMD EPYC 7R32AMD EPYC 7R13 Processor
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.12xlargec6a.12xlargec6a.12xlarge vs c5a.12xlarge
On-demandPay by the hour$1.848$1.836▼ 1%
SpotCan be interrupted69% off$0.576567% off$0.6006▲ 4%
1-yr reservedNo upfront37% off$1.16434% off$1.214▲ 4%
3-yr reservedNo upfront57% off$0.79856% off$0.8083▲ 1%
1-yr savings planHourly commitment27% off$1.34328% off$1.327▼ 1%
3-yr savings planHourly commitment52% off$0.89252% off$0.8865▼ 1%

Key differences

The biggest lead each one has.

Where c5a.12xlarge leads

No clear lead on the measures we compare.

Where c6a.12xlarge leads
On-demand price$1.836 vs $1.848 per hour
1% cheaper
EBS baseline bandwidth15,000 Mbps vs 4,750 Mbps
3.2× higher
Network baseline18.75 Gbps vs 12 Gbps
56% higher
Clock speed3.6 GHz vs 3.3 GHz
9% higher

Specs

14 of 40 specs differ. Those are in bold.

Compute3 of 10 differc5a.12xlargec6a.12xlarge
vCPUs4848
Physical cores2424
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7R32AMD EPYC 7R13 Processor
CPU makerAMDAMD
Clock speed3.3 GHz3.6 GHz
Sustained clock3.3 GHz3.6 GHz
Processor featuresAMD Turbo; AVX; AVX2AMD Turbo; AVX; AVX2
BurstableNoNo
MemoryAll 1 matchc5a.12xlargec6a.12xlarge
Memory (GiB)9696
Networking3 of 8 differc5a.12xlargec6a.12xlarge
Network12 Gigabit18750 Megabit
Network baseline12 Gbps18.75 Gbps
Network peak12 Gbps18.75 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differc5a.12xlargec6a.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput4750 Mbps10000 Mbps
EBS baseline bandwidth4,750 Mbps15,000 Mbps
EBS max bandwidth4,750 Mbps15,000 Mbps
EBS baseline throughput593.75 MB/s1,875 MB/s
EBS max throughput593.75 MB/s1,875 MB/s
EBS baseline IOPS20,00060,000
EBS max IOPS20,00060,000
Max EBS volumes2727
Instance details1 of 10 differc5a.12xlargec6a.12xlarge
Familyc5ac6a
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.12xlargec6a.12xlargeDifference
Asia Pacific (Mumbai)ap-south-1$1.128$1.122▼ 1%
US East (N. Virginia)Used in summaryus-east-1$1.848$1.836▼ 1%
US East (Ohio)us-east-2$1.848$1.836▼ 1%
US West (Oregon)us-west-2$1.848$1.836▼ 1%
Canada (Central)ca-central-1$2.016$2.009Same
EU (Ireland)eu-west-1$2.064$1.97▼ 5%
EU (Frankfurt)eu-central-1$2.088$2.095Same
Asia Pacific (Singapore)ap-southeast-1$2.112$2.117Same
EU (London)eu-west-2$2.184$2.182Same
US West (N. California)us-west-1$2.28$2.29Same
Asia Pacific (Tokyo)ap-northeast-1$2.304$2.311Same
Asia Pacific (Hong Kong)ap-east-1$2.328$2.333Same
Asia Pacific (Sydney)ap-southeast-2$2.40$2.398Same
South America (Sao Paulo)sa-east-1$2.832$2.83Same

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

c5.12xlargec5ad.12xlargem5a.12xlarger5a.12xlarge
c6a.12xlargeCompute optimized, c6a family
c6a.12xlarge prices and specsEvery size in the c6a family

Compare c6a.12xlarge with

c6g.12xlargec6i.12xlargem6a.12xlarger6a.12xlargec7a.12xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 56–57% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

Connect AWS account

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