c8a.12xlargevsc8i.12xlarge

c8i.12xlarge is 13% cheaper than c8a.12xlarge on demand in US East (N. Virginia), saving $246.37 a month.

At a glancec8a.12xlargec8i.12xlarge
On-demand$2.587/hr$2.249/hr13% less
Lowest rate$0.6765/hrSpot, can be interrupted$0.6702/hr1% lessSpot, can be interrupted
Size48 vCPUs, 96 GiB48 vCPUs, 96 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.12xlargec8i.12xlargec8i.12xlarge vs c8a.12xlarge
On-demandPay by the hour$2.587$2.249▼ 13%
SpotCan be interrupted74% off$0.676570% off$0.6702▼ 1%
1-yr savings planHourly commitment28% off$1.86928% off$1.625▼ 13%
3-yr savings planHourly commitment52% off$1.24952% off$1.086▼ 13%

Key differences

The biggest lead each one has.

Where c8a.12xlarge leads
Physical cores48 vs 24
2× higher
IPv4 addresses per interface64 vs 50
28% higher
Where c8i.12xlarge leads
On-demand price$2.249 vs $2.587 per hour
13% cheaper

Specs

9 of 40 specs differ. Those are in bold.

Compute7 of 10 differc8a.12xlargec8i.12xlarge
vCPUs4848
Physical cores4824
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.12xlargec8i.12xlarge
Memory (GiB)9696
Networking1 of 8 differc8a.12xlargec8i.12xlarge
Network22500 Megabit22500 Megabit
Network baseline22.5 Gbps22.5 Gbps
Network peak22.5 Gbps22.5 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1212
IPv4 addresses per interface6450
StorageAll 11 matchc8a.12xlargec8i.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput15000 Mbps15000 Mbps
EBS baseline bandwidth15,000 Mbps15,000 Mbps
EBS max bandwidth15,000 Mbps15,000 Mbps
EBS baseline throughput1,875 MB/s1,875 MB/s
EBS max throughput1,875 MB/s1,875 MB/s
EBS baseline IOPS60,00060,000
EBS max IOPS60,00060,000
Max EBS volumes3232
Instance details1 of 10 differc8a.12xlargec8i.12xlarge
Familyc8ac8i
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor9696
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.12xlarge first. Linux, USD per hour.

Regionc8a.12xlargec8i.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.587$2.249▼ 13%
US East (Ohio)us-east-2$2.587$2.249▼ 13%
US West (Oregon)us-west-2$2.587$2.249▼ 13%
Europe (Spain)eu-south-2$2.775$2.413▼ 13%
EU (Ireland)eu-west-1$2.775$2.413▼ 13%
EU (Frankfurt)eu-central-1$2.952$2.567▼ 13%
Asia Pacific (Tokyo)ap-northeast-1$3.256$2.831▼ 13%

Keep exploring

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

c8a.12xlargeCompute optimized, c8a family
c8a.12xlarge prices and specsEvery size in the c8a family

Compare c8a.12xlarge with

c8g.12xlarger8a.12xlargem8a.12xlargec7a.12xlarge
c8i.12xlargeCompute optimized, c8i family
c8i.12xlarge prices and specsEvery size in the c8i family

Compare c8i.12xlarge with

c8g.12xlargec8i-flex.12xlargem8i.12xlarger8i.12xlargec8id.12xlargec8in.12xlargec8ine.12xlargec8ib.12xlargec7i.12xlarge

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.