c6a.16xlargevsc6g.16xlarge

c6g.16xlarge is 11% cheaper than c6a.16xlarge on demand in US East (N. Virginia), saving $198.56 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.16xlargec6g.16xlarge
On-demand$2.448/hr$2.176/hr11% less
Lowest rate$0.7818/hrSpot, can be interrupted$0.5851/hr25% lessSpot, can be interrupted
Size64 vCPUs, 128 GiB64 vCPUs, 128 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.16xlargec6g.16xlargec6g.16xlarge vs c6a.16xlarge
On-demandPay by the hour$2.448$2.176▼ 11%
SpotCan be interrupted68% off$0.781873% off$0.5851▼ 25%
1-yr reservedNo upfront34% off$1.61937% off$1.371▼ 15%
3-yr reservedNo upfront56% off$1.07857% off$0.94▼ 13%
1-yr savings planHourly commitment28% off$1.76927% off$1.586▼ 10%
3-yr savings planHourly commitment52% off$1.18252% off$1.051▼ 11%

Key differences

The biggest lead each one has.

Where c6a.16xlarge leads
Clock speed3.6 GHz vs 2.5 GHz
44% higher
EBS baseline bandwidth20,000 Mbps vs 19,000 Mbps
5% higher
Where c6g.16xlarge leads
On-demand price$2.176 vs $2.448 per hour
11% cheaper
Physical cores64 vs 32
2× higher

Specs

16 of 40 specs differ. Those are in bold.

Compute8 of 10 differc6a.16xlargec6g.16xlarge
vCPUs6464
Physical cores3264
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.16xlargec6g.16xlarge
Memory (GiB)128128
Networking1 of 8 differc6a.16xlargec6g.16xlarge
Network25000 Megabit25 Gigabit
Network baseline25 Gbps25 Gbps
Network peak25 Gbps25 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage5 of 11 differc6a.16xlargec6g.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput13333 Mbps19000 Mbps
EBS baseline bandwidth20,000 Mbps19,000 Mbps
EBS max bandwidth20,000 Mbps19,000 Mbps
EBS baseline throughput2,500 MB/s2,375 MB/s
EBS max throughput2,500 MB/s2,375 MB/s
EBS baseline IOPS80,00080,000
EBS max IOPS80,00080,000
Max EBS volumes2727
Instance details2 of 10 differc6a.16xlargec6g.16xlarge
Familyc6ac6g
CategoryCompute optimizedCompute optimized
Current generationYesYes
Normalization factor128128
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFIUEFI

On-demand prices by region

Cheapest for c6a.16xlarge first. Linux, USD per hour.

Regionc6a.16xlargec6g.16xlargeDifference
Asia Pacific (Hyderabad)ap-south-2$1.496$1.363▼ 9%
Asia Pacific (Mumbai)ap-south-1$1.496$1.363▼ 9%
US East (N. Virginia)Used in summaryus-east-1$2.448$2.176▼ 11%
US East (Ohio)us-east-2$2.448$2.176▼ 11%
US West (Oregon)us-west-2$2.448$2.176▼ 11%
EU (Ireland)eu-west-1$2.627$2.335▼ 11%
Canada (Central)ca-central-1$2.678$2.381▼ 11%
EU (Frankfurt)eu-central-1$2.794$2.483▼ 11%
Asia Pacific (Singapore)ap-southeast-1$2.822$2.509▼ 11%
EU (London)eu-west-2$2.909$2.586▼ 11%
US West (N. California)us-west-1$3.053$2.714▼ 11%
Asia Pacific (Tokyo)ap-northeast-1$3.082$2.739▼ 11%
Asia Pacific (Hong Kong)ap-east-1$3.11$2.752▼ 12%
Asia Pacific (Sydney)ap-southeast-2$3.197$2.842▼ 11%
South America (Sao Paulo)sa-east-1$3.773$3.354▼ 11%

Keep exploring

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

c6a.16xlargeCompute optimized, c6a family
c6a.16xlarge prices and specsEvery size in the c6a family

Compare c6a.16xlarge with

c6i.16xlargem6a.16xlarger6a.16xlargec5a.16xlargec7a.16xlarge
c6g.16xlargeCompute optimized, c6g family
c6g.16xlarge prices and specsEvery size in the c6g family

Compare c6g.16xlarge with

c6gd.16xlargec6i.16xlargem6g.16xlarger6g.16xlargec6gn.16xlargec7g.16xlarge

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.