c5a.16xlargevsc6a.16xlarge

c6a.16xlarge is 1% cheaper than c5a.16xlarge on demand in US East (N. Virginia), saving $11.68 a month.

At a glancec5a.16xlargec6a.16xlarge
On-demand$2.464/hr$2.448/hr1% less
Lowest rate$0.7715/hr1% lessSpot, can be interrupted$0.7818/hrSpot, can be interrupted
Size64 vCPUs, 128 GiB64 vCPUs, 128 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.16xlargec6a.16xlargec6a.16xlarge vs c5a.16xlarge
On-demandPay by the hour$2.464$2.448▼ 1%
SpotCan be interrupted69% off$0.771568% off$0.7818▲ 1%
1-yr reservedNo upfront37% off$1.55234% off$1.619▲ 4%
3-yr reservedNo upfront57% off$1.06456% off$1.078▲ 1%
1-yr savings planHourly commitment27% off$1.7928% off$1.769▼ 1%
3-yr savings planHourly commitment52% off$1.1952% off$1.182▼ 1%

Key differences

The biggest lead each one has.

Where c5a.16xlarge leads

No clear lead on the measures we compare.

Where c6a.16xlarge leads
On-demand price$2.448 vs $2.464 per hour
1% cheaper
EBS baseline bandwidth20,000 Mbps vs 6,300 Mbps
3.2× higher
Network baseline25 Gbps vs 20 Gbps
25% higher
Clock speed3.6 GHz vs 3.3 GHz
9% higher

Specs

15 of 40 specs differ. Those are in bold.

Compute3 of 10 differc5a.16xlargec6a.16xlarge
vCPUs6464
Physical cores3232
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.16xlargec6a.16xlarge
Memory (GiB)128128
Networking3 of 8 differc5a.16xlargec6a.16xlarge
Network20 Gigabit25000 Megabit
Network baseline20 Gbps25 Gbps
Network peak20 Gbps25 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage7 of 11 differc5a.16xlargec6a.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput6300 Mbps13333 Mbps
EBS baseline bandwidth6,300 Mbps20,000 Mbps
EBS max bandwidth6,300 Mbps20,000 Mbps
EBS baseline throughput787.5 MB/s2,500 MB/s
EBS max throughput787.5 MB/s2,500 MB/s
EBS baseline IOPS26,70080,000
EBS max IOPS26,70080,000
Max EBS volumes2727
Instance details2 of 10 differc5a.16xlargec6a.16xlarge
Familyc5ac6a
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor128128
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

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

Regionc5a.16xlargec6a.16xlargeDifference
Asia Pacific (Mumbai)ap-south-1$1.504$1.496▼ 1%
US East (N. Virginia)Used in summaryus-east-1$2.464$2.448▼ 1%
US East (Ohio)us-east-2$2.464$2.448▼ 1%
US West (Oregon)us-west-2$2.464$2.448▼ 1%
Canada (Central)ca-central-1$2.688$2.678Same
EU (Ireland)eu-west-1$2.752$2.627▼ 5%
EU (Frankfurt)eu-central-1$2.784$2.794Same
Asia Pacific (Singapore)ap-southeast-1$2.816$2.822Same
EU (London)eu-west-2$2.912$2.909Same
US West (N. California)us-west-1$3.04$3.053Same
Asia Pacific (Tokyo)ap-northeast-1$3.072$3.082Same
Asia Pacific (Hong Kong)ap-east-1$3.104$3.11Same
Asia Pacific (Sydney)ap-southeast-2$3.20$3.197Same
South America (Sao Paulo)sa-east-1$3.776$3.773Same

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

c5ad.16xlargem5a.16xlarger5a.16xlarge
c6a.16xlargeCompute optimized, c6a family
c6a.16xlarge prices and specsEvery size in the c6a family

Compare c6a.16xlarge with

c6g.16xlargec6i.16xlargem6a.16xlarger6a.16xlargec7a.16xlarge

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.

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