c7a.12xlargevsc7g.12xlarge

c7g.12xlarge is 29% cheaper than c7a.12xlarge on demand in US East (N. Virginia), saving $528.08 a month. They use different processor architectures (x86_64 and arm64), so software built for one may need rebuilding to run on the other.

At a glancec7a.12xlargec7g.12xlarge
On-demand$2.463/hr$1.74/hr29% less
Lowest rate$0.5961/hrSpot, can be interrupted$0.4768/hr20% lessSpot, can be interrupted
Size48 vCPUs, 96 GiB48 vCPUs, 96 GiB
ProcessorAMD EPYC 9R14 ProcessorAWS Graviton3 Processor
Architecturex86_64arm64

Prices in US East (N. Virginia)

“Off” is the discount against each type’s own on-demand price. Linux, USD per hour.

Optionc7a.12xlargec7g.12xlargec7g.12xlarge vs c7a.12xlarge
On-demandPay by the hour$2.463$1.74▼ 29%
SpotCan be interrupted76% off$0.596173% off$0.4768▼ 20%
1-yr reservedNo upfront34% off$1.62934% off$1.147▼ 30%
3-yr reservedNo upfront56% off$1.08556% off$0.7646▼ 29%
1-yr savings planHourly commitment28% off$1.7828% off$1.247▼ 30%
3-yr savings planHourly commitment52% off$1.18952% off$0.8424▼ 29%

Key differences

The biggest lead each one has.

Where c7a.12xlarge leads
Clock speedUp to 3.7 GHz vs 2.5 GHz
48% higher
Max EBS volumes32 vs 27
19% higher
Where c7g.12xlarge leads
On-demand price$1.74 vs $2.463 per hour
29% cheaper
Network baseline22.5 Gbps vs 18.75 Gbps
20% higher

Specs

12 of 40 specs differ. Those are in bold.

Compute6 of 10 differc7a.12xlargec7g.12xlarge
vCPUs4848
Physical cores4848
Threads per core11
Architecturex86_64arm64
ProcessorAMD EPYC 9R14 ProcessorAWS Graviton3 Processor
CPU makerAMDAWS
Clock speedUp to 3.7 GHz2.5 GHz
Sustained clock3.7 GHz2.6 GHz
Processor featuresAMD Turbo; AVX; AVX2; AVX512–
BurstableNoNo
MemoryAll 1 matchc7a.12xlargec7g.12xlarge
Memory (GiB)9696
Networking3 of 8 differc7a.12xlargec7g.12xlarge
Network18750 Megabit22500 Megabit
Network baseline18.75 Gbps22.5 Gbps
Network peak18.75 Gbps22.5 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage1 of 11 differc7a.12xlargec7g.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 volumes3227
Instance details2 of 10 differc7a.12xlargec7g.12xlarge
Familyc7ac7g
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor9696
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFIUEFI

On-demand prices by region

Cheapest for c7a.12xlarge first. Linux, USD per hour.

Regionc7a.12xlargec7g.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.463$1.74▼ 29%
US East (Ohio)us-east-2$2.463$1.734▼ 30%
US West (Oregon)us-west-2$2.463$1.74▼ 29%
EU (Stockholm)eu-north-1$2.637$1.857▼ 30%
Europe (Spain)eu-south-2$2.642$1.86▼ 30%
EU (Ireland)eu-west-1$2.643$1.861▼ 30%
EU (Frankfurt)eu-central-1$2.811$1.979▼ 30%
Asia Pacific (Singapore)ap-southeast-1$2.84$1.999▼ 30%
EU (London)eu-west-2$2.927$2.061▼ 30%
US West (N. California)us-west-1$3.072$2.162▼ 30%
Asia Pacific (Tokyo)ap-northeast-1$3.101$2.183▼ 30%

Keep exploring

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

c7a.12xlargeCompute optimized, c7a family
c7a.12xlarge prices and specsEvery size in the c7a family

Compare c7a.12xlarge with

c7i.12xlargem7a.12xlarger7a.12xlargec6a.12xlargec8a.12xlarge
c7g.12xlargeCompute optimized, c7g family
c7g.12xlarge prices and specsEvery size in the c7g family

Compare c7g.12xlarge with

c7i.12xlargem7g.12xlarger7g.12xlargec7gd.12xlargec7gn.12xlargec6g.12xlargec8g.12xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 56% 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.