c6a.12xlargevsc6g.12xlarge

c6g.12xlarge is 11% cheaper than c6a.12xlarge on demand in US East (N. Virginia), saving $148.92 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 glancec6a.12xlargec6g.12xlarge
On-demand$1.836/hr$1.632/hr11% less
Lowest rate$0.6006/hrSpot, can be interrupted$0.3952/hr34% lessSpot, can be interrupted
Size48 vCPUs, 96 GiB48 vCPUs, 96 GiB
ProcessorAMD EPYC 7R13 ProcessorAWS Graviton2 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.

Optionc6a.12xlargec6g.12xlargec6g.12xlarge vs c6a.12xlarge
On-demandPay by the hour$1.836$1.632▼ 11%
SpotCan be interrupted67% off$0.600676% off$0.3952▼ 34%
1-yr reservedNo upfront34% off$1.21437% off$1.028▼ 15%
3-yr reservedNo upfront56% off$0.808357% off$0.705▼ 13%
1-yr savings planHourly commitment28% off$1.32727% off$1.189▼ 10%
3-yr savings planHourly commitment52% off$0.886552% off$0.788▼ 11%

Key differences

The biggest lead each one has.

Where c6a.12xlarge leads
Clock speed3.6 GHz vs 2.5 GHz
44% higher
EBS baseline IOPS60,000 vs 50,000
20% higher
Where c6g.12xlarge leads
On-demand price$1.632 vs $1.836 per hour
11% cheaper
Physical cores48 vs 24
2× higher
Network baseline20 Gbps vs 18.75 Gbps
7% higher

Specs

21 of 40 specs differ. Those are in bold.

Compute8 of 10 differc6a.12xlargec6g.12xlarge
vCPUs4848
Physical cores2448
Threads per core21
Architecturex86_64arm64
ProcessorAMD EPYC 7R13 ProcessorAWS Graviton2 Processor
CPU makerAMDAWS
Clock speed3.6 GHz2.5 GHz
Sustained clock3.6 GHz2.5 GHz
Processor featuresAMD Turbo; AVX; AVX2–
BurstableNoNo
MemoryAll 1 matchc6a.12xlargec6g.12xlarge
Memory (GiB)9696
Networking3 of 8 differc6a.12xlargec6g.12xlarge
Network18750 Megabit20 Gigabit
Network baseline18.75 Gbps20 Gbps
Network peak18.75 Gbps20 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differc6a.12xlargec6g.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput10000 Mbps13500 Mbps
EBS baseline bandwidth15,000 Mbps14,250 Mbps
EBS max bandwidth15,000 Mbps14,250 Mbps
EBS baseline throughput1,875 MB/s1,781.25 MB/s
EBS max throughput1,875 MB/s1,781.25 MB/s
EBS baseline IOPS60,00050,000
EBS max IOPS60,00050,000
Max EBS volumes2727
Instance details3 of 10 differc6a.12xlargec6g.12xlarge
Familyc6ac6g
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor9696
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFIUEFI

On-demand prices by region

Cheapest for c6a.12xlarge first. Linux, USD per hour.

Regionc6a.12xlargec6g.12xlargeDifference
Asia Pacific (Hyderabad)ap-south-2$1.122$1.022▼ 9%
Asia Pacific (Mumbai)ap-south-1$1.122$1.022▼ 9%
US East (N. Virginia)Used in summaryus-east-1$1.836$1.632▼ 11%
US East (Ohio)us-east-2$1.836$1.632▼ 11%
US West (Oregon)us-west-2$1.836$1.632▼ 11%
EU (Ireland)eu-west-1$1.97$1.751▼ 11%
Canada (Central)ca-central-1$2.009$1.786▼ 11%
EU (Frankfurt)eu-central-1$2.095$1.862▼ 11%
Asia Pacific (Singapore)ap-southeast-1$2.117$1.882▼ 11%
EU (London)eu-west-2$2.182$1.939▼ 11%
US West (N. California)us-west-1$2.29$2.035▼ 11%
Asia Pacific (Tokyo)ap-northeast-1$2.311$2.054▼ 11%
Asia Pacific (Hong Kong)ap-east-1$2.333$2.064▼ 12%
Asia Pacific (Sydney)ap-southeast-2$2.398$2.131▼ 11%
South America (Sao Paulo)sa-east-1$2.83$2.515▼ 11%

Keep exploring

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

c6a.12xlargeCompute optimized, c6a family
c6a.12xlarge prices and specsEvery size in the c6a family

Compare c6a.12xlarge with

c6i.12xlargem6a.12xlarger6a.12xlargec5a.12xlargec7a.12xlarge
c6g.12xlargeCompute optimized, c6g family
c6g.12xlarge prices and specsEvery size in the c6g family

Compare c6g.12xlarge with

c6gd.12xlargec6i.12xlargem6g.12xlarger6g.12xlargec6gn.12xlargec7g.12xlarge

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.