r6a.4xlargevsr6g.4xlarge

r6g.4xlarge is 11% cheaper than r6a.4xlarge on demand in US East (N. Virginia), saving $73.58 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 glancer6a.4xlarger6g.4xlarge
On-demand$0.9072/hr$0.8064/hr11% less
Lowest rate$0.2337/hrSpot, can be interrupted$0.1714/hr27% lessSpot, can be interrupted
Size16 vCPUs, 128 GiB16 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.

Optionr6a.4xlarger6g.4xlarger6g.4xlarge vs r6a.4xlarge
On-demandPay by the hour$0.9072$0.8064▼ 11%
SpotCan be interrupted74% off$0.233779% off$0.1714▼ 27%
1-yr reservedNo upfront34% off$0.600137% off$0.508▼ 15%
3-yr reservedNo upfront55% off$0.411557% off$0.3484▼ 15%
1-yr savings planHourly commitment28% off$0.657327% off$0.5847▼ 11%
3-yr savings planHourly commitment48% off$0.473248% off$0.4216▼ 11%

Key differences

The biggest lead each one has.

Where r6a.4xlarge leads
EBS max bandwidth10,000 Mbps vs 4,750 Mbps
2.1× higher
Clock speed3.6 GHz vs 2.5 GHz
44% higher
Network baseline6.25 Gbps vs 5 Gbps
25% higher
Where r6g.4xlarge leads
On-demand price$0.8064 vs $0.9072 per hour
11% cheaper
Physical cores16 vs 8
2× higher

Specs

19 of 40 specs differ. Those are in bold.

Compute8 of 10 differr6a.4xlarger6g.4xlarge
vCPUs1616
Physical cores816
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 matchr6a.4xlarger6g.4xlarge
Memory (GiB)128128
Networking3 of 8 differr6a.4xlarger6g.4xlarge
NetworkUp to 12500 MegabitUp to 10 Gigabit
Network baseline6.25 Gbps5 Gbps
Network peak12.5 Gbps10 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage6 of 11 differr6a.4xlarger6g.4xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughputUp to 6667 Mbps4500 Mbps
EBS baseline bandwidth5,000 Mbps4,750 Mbps
EBS max bandwidth10,000 Mbps4,750 Mbps
EBS baseline throughput625 MB/s593.75 MB/s
EBS max throughput1,250 MB/s593.75 MB/s
EBS baseline IOPS20,00020,000
EBS max IOPS40,00020,000
Max EBS volumes2727
Instance details2 of 10 differr6a.4xlarger6g.4xlarge
Familyr6ar6g
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor3232
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFIUEFI

On-demand prices by region

Cheapest for r6a.4xlarge first. Linux, USD per hour.

Regionr6a.4xlarger6g.4xlargeDifference
Asia Pacific (Hyderabad)ap-south-2$0.572$0.52▼ 9%
Asia Pacific (Mumbai)ap-south-1$0.572$0.52▼ 9%
US East (N. Virginia)Used in summaryus-east-1$0.9072$0.8064▼ 11%
US East (Ohio)us-east-2$0.9072$0.8064▼ 11%
US West (Oregon)us-west-2$0.9072$0.8064▼ 11%
Canada (Central)ca-central-1$0.9936$0.8832▼ 11%
US West (N. California)us-west-1$1.008$0.896▼ 11%
EU (Ireland)eu-west-1$1.015$0.9024▼ 11%
EU (London)eu-west-2$1.066$0.9472▼ 11%
Asia Pacific (Sydney)ap-southeast-2$1.087$0.9664▼ 11%
Asia Pacific (Singapore)ap-southeast-1$1.094$0.9728▼ 11%
Asia Pacific (Tokyo)ap-northeast-1$1.094$0.9728▼ 11%
EU (Frankfurt)eu-central-1$1.094$0.9728▼ 11%

Keep exploring

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

r6a.4xlargeMemory optimized, r6a family
r6a.4xlarge prices and specsEvery size in the r6a family

Compare r6a.4xlarge with

r6i.4xlargec6a.4xlargem6a.4xlarger5a.4xlarger7a.4xlarge
r6g.4xlargeMemory optimized, r6g family
r6g.4xlarge prices and specsEvery size in the r6g family

Compare r6g.4xlarge with

c6g.4xlargem6g.4xlarger6gd.4xlarger6i.4xlarger7g.4xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 55–57% 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.