c8a.16xlargevsr8a.16xlarge

c8a.16xlarge is 33% cheaper than r8a.16xlarge on demand in US East (N. Virginia), saving $1,214.50 a month.

At a glancec8a.16xlarger8a.16xlarge
On-demand$3.449/hr33% less$5.112/hr
Lowest rate$0.7543/hr69% lessSpot, can be interrupted$2.401/hrSpot, can be interrupted
Size64 vCPUs, 128 GiB64 vCPUs, 512 GiB
ProcessorAMD EPYC 9R45 ProcessorAMD EPYC 9R45 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.

Optionc8a.16xlarger8a.16xlarger8a.16xlarge vs c8a.16xlarge
On-demandPay by the hour$3.449$5.112▲ 48%
SpotCan be interrupted78% off$0.754353% off$2.401▲ 218%
1-yr savings planHourly commitment28% off$2.49228% off$3.704▲ 49%
3-yr savings planHourly commitment52% off$1.66548% off$2.667▲ 60%

Key differences

The biggest lead each one has.

Where c8a.16xlarge leads
On-demand price$3.449 vs $5.112 per hour
33% cheaper
Where r8a.16xlarge leads
Memory (GiB)512 vs 128
4× higher

Specs

4 of 40 specs differ. Those are in bold.

ComputeAll 10 matchc8a.16xlarger8a.16xlarge
vCPUs6464
Physical cores6464
Threads per core11
Architecturex86_64x86_64
ProcessorAMD EPYC 9R45 ProcessorAMD EPYC 9R45 Processor
CPU makerAMDAMD
Clock speedUp to 4.5 GHzUp to 4.5 GHz
Sustained clock4.5 GHz4.5 GHz
Processor featuresAMD Turbo; AVX; AVX2; AVX512AMD Turbo; AVX; AVX2; AVX512
BurstableNoNo
Memory1 of 1 differc8a.16xlarger8a.16xlarge
Memory (GiB)128512
NetworkingAll 8 matchc8a.16xlarger8a.16xlarge
Network30000 Megabit30000 Megabit
Network baseline30 Gbps30 Gbps
Network peak30 Gbps30 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1616
IPv4 addresses per interface6464
StorageAll 11 matchc8a.16xlarger8a.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput20000 Mbps20000 Mbps
EBS baseline bandwidth20,000 Mbps20,000 Mbps
EBS max bandwidth20,000 Mbps20,000 Mbps
EBS baseline throughput2,500 MB/s2,500 MB/s
EBS max throughput2,500 MB/s2,500 MB/s
EBS baseline IOPS80,00080,000
EBS max IOPS80,00080,000
Max EBS volumes4848
Instance details3 of 10 differc8a.16xlarger8a.16xlarge
Familyc8ar8a
CategoryCompute optimizedMemory optimized
Current generationYesYes
Normalization factor128128
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 c8a.16xlarge first. Linux, USD per hour.

Regionc8a.16xlarger8a.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$3.449$5.112▲ 48%
US East (Ohio)us-east-2$3.449$5.112▲ 48%
US West (Oregon)us-west-2$3.449$5.112▲ 48%
Europe (Spain)eu-south-2$3.70$5.721▲ 55%
EU (Ireland)eu-west-1$3.70$5.721▲ 55%
EU (Frankfurt)eu-central-1$3.936$6.167▲ 57%
Asia Pacific (Tokyo)ap-northeast-1$4.341$6.167▲ 42%

Keep exploring

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

c8a.16xlargeCompute optimized, c8a family
c8a.16xlarge prices and specsEvery size in the c8a family

Compare c8a.16xlarge with

c8g.16xlargec8i.16xlargem8a.16xlargec7a.16xlarge
r8a.16xlargeMemory optimized, r8a family
r8a.16xlarge prices and specsEvery size in the r8a family

Compare r8a.16xlarge with

r8g.16xlarger8i.16xlargem8a.16xlarger7a.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 48–52% 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.