r6a.16xlargevsr6g.16xlarge

r6g.16xlarge is 11% cheaper than r6a.16xlarge on demand in US East (N. Virginia), saving $294.34 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.16xlarger6g.16xlarge
On-demand$3.629/hr$3.226/hr11% less
Lowest rate$0.7207/hr19% lessSpot, can be interrupted$0.8924/hrSpot, can be interrupted
Size64 vCPUs, 512 GiB64 vCPUs, 512 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.16xlarger6g.16xlarger6g.16xlarge vs r6a.16xlarge
On-demandPay by the hour$3.629$3.226▼ 11%
SpotCan be interrupted80% off$0.720772% off$0.8924▲ 24%
1-yr reservedNo upfront34% off$2.40137% off$2.032▼ 15%
3-yr reservedNo upfront55% off$1.64657% off$1.393▼ 15%
1-yr savings planHourly commitment28% off$2.62927% off$2.339▼ 11%
3-yr savings planHourly commitment48% off$1.89348% off$1.686▼ 11%

Key differences

The biggest lead each one has.

Where r6a.16xlarge leads
Clock speed3.6 GHz vs 2.5 GHz
44% higher
EBS baseline bandwidth20,000 Mbps vs 19,000 Mbps
5% higher
Where r6g.16xlarge leads
On-demand price$3.226 vs $3.629 per hour
11% cheaper
Physical cores64 vs 32
2× higher

Specs

16 of 40 specs differ. Those are in bold.

Compute8 of 10 differr6a.16xlarger6g.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 matchr6a.16xlarger6g.16xlarge
Memory (GiB)512512
Networking1 of 8 differr6a.16xlarger6g.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 differr6a.16xlarger6g.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput13333 Mbps18000 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 differr6a.16xlarger6g.16xlarge
Familyr6ar6g
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor128128
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoNo
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFIUEFI

On-demand prices by region

Cheapest for r6a.16xlarge first. Linux, USD per hour.

Regionr6a.16xlarger6g.16xlargeDifference
Asia Pacific (Hyderabad)ap-south-2$2.288$2.08▼ 9%
Asia Pacific (Mumbai)ap-south-1$2.288$2.08▼ 9%
US East (N. Virginia)Used in summaryus-east-1$3.629$3.226▼ 11%
US East (Ohio)us-east-2$3.629$3.226▼ 11%
US West (Oregon)us-west-2$3.629$3.226▼ 11%
Canada (Central)ca-central-1$3.974$3.533▼ 11%
US West (N. California)us-west-1$4.032$3.584▼ 11%
EU (Ireland)eu-west-1$4.061$3.61▼ 11%
EU (London)eu-west-2$4.262$3.789▼ 11%
Asia Pacific (Sydney)ap-southeast-2$4.349$3.866▼ 11%
Asia Pacific (Singapore)ap-southeast-1$4.378$3.891▼ 11%
Asia Pacific (Tokyo)ap-northeast-1$4.378$3.891▼ 11%
EU (Frankfurt)eu-central-1$4.378$3.891▼ 11%

Keep exploring

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

r6a.16xlargeMemory optimized, r6a family
r6a.16xlarge prices and specsEvery size in the r6a family

Compare r6a.16xlarge with

r6i.16xlargec6a.16xlargem6a.16xlarger5a.16xlarger7a.16xlarge
r6g.16xlargeMemory optimized, r6g family
r6g.16xlarge prices and specsEvery size in the r6g family

Compare r6g.16xlarge with

c6g.16xlargem6g.16xlarger6gd.16xlarger6i.16xlarger7g.16xlarge

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.