c8a.4xlargevsc8i.4xlarge

c8i.4xlarge is 13% cheaper than c8a.4xlarge on demand in US East (N. Virginia), saving $82.12 a month.

At a glancec8a.4xlargec8i.4xlarge
On-demand$0.8622/hr$0.7497/hr13% less
Lowest rate$0.2549/hrSpot, can be interrupted$0.2324/hr9% lessSpot, can be interrupted
Size16 vCPUs, 32 GiB16 vCPUs, 32 GiB
ProcessorAMD EPYC 9R45 ProcessorIntel Xeon Scalable (Granite Rapids)
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.4xlargec8i.4xlargec8i.4xlarge vs c8a.4xlarge
On-demandPay by the hour$0.8622$0.7497▼ 13%
SpotCan be interrupted70% off$0.254969% off$0.2324▼ 9%
1-yr savings planHourly commitment28% off$0.62328% off$0.5418▼ 13%
3-yr savings planHourly commitment52% off$0.416352% off$0.362▼ 13%

Key differences

The biggest lead each one has.

Where c8a.4xlarge leads
Physical cores16 vs 8
2× higher
Where c8i.4xlarge leads
On-demand price$0.7497 vs $0.8622 per hour
13% cheaper
IPv4 addresses per interface50 vs 40
25% higher

Specs

9 of 40 specs differ. Those are in bold.

Compute7 of 10 differc8a.4xlargec8i.4xlarge
vCPUs1616
Physical cores168
Threads per core12
Architecturex86_64x86_64
ProcessorAMD EPYC 9R45 ProcessorIntel Xeon Scalable (Granite Rapids)
CPU makerAMDIntel
Clock speedUp to 4.5 GHz3.9 GHz
Sustained clock4.5 GHz3.9 GHz
Processor featuresAMD Turbo; AVX; AVX2; AVX512Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX
BurstableNoNo
MemoryAll 1 matchc8a.4xlargec8i.4xlarge
Memory (GiB)3232
Networking1 of 8 differc8a.4xlargec8i.4xlarge
NetworkUp to 15000 MegabitUp to 15000 Megabit
Network baseline7.5 Gbps7.5 Gbps
Network peak15 Gbps15 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface4050
StorageAll 11 matchc8a.4xlargec8i.4xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughputUp to 10000 MbpsUp to 10000 Mbps
EBS baseline bandwidth5,000 Mbps5,000 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput625 MB/s625 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS20,00020,000
EBS max IOPS40,00040,000
Max EBS volumes3232
Instance details1 of 10 differc8a.4xlargec8i.4xlarge
Familyc8ac8i
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor3232
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for c8a.4xlarge first. Linux, USD per hour.

Regionc8a.4xlargec8i.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.8622$0.7497▼ 13%
US East (Ohio)us-east-2$0.8622$0.7497▼ 13%
US West (Oregon)us-west-2$0.8622$0.7497▼ 13%
Europe (Spain)eu-south-2$0.9249$0.8043▼ 13%
EU (Ireland)eu-west-1$0.925$0.8044▼ 13%
EU (Frankfurt)eu-central-1$0.9839$0.8555▼ 13%
Asia Pacific (Tokyo)ap-northeast-1$1.085$0.9438▼ 13%

Keep exploring

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

c8a.4xlargeCompute optimized, c8a family
c8a.4xlarge prices and specsEvery size in the c8a family

Compare c8a.4xlarge with

c8g.4xlarger8a.4xlargem8a.4xlargec7a.4xlarge
c8i.4xlargeCompute optimized, c8i family
c8i.4xlarge prices and specsEvery size in the c8i family

Compare c8i.4xlarge with

c8g.4xlargec8i-flex.4xlargem8i.4xlarger8i.4xlargec8id.4xlargec8in.4xlargec8ine.4xlargec8ib.4xlargec7i.4xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 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.