r5a.4xlargevsr6a.4xlarge

r5a.4xlarge is 0% cheaper than r6a.4xlarge on demand in US East (N. Virginia), saving $2.34 a month.

At a glancer5a.4xlarger6a.4xlarge
On-demand$0.904/hr0% less$0.9072/hr
Lowest rate$0.3225/hrSpot, can be interrupted$0.2337/hr28% lessSpot, can be interrupted
Size16 vCPUs, 128 GiB16 vCPUs, 128 GiB
ProcessorAMD EPYC 7571AMD EPYC 7R13 Processor
Architecturex86_64x86_64

Prices in US East (N. Virginia)

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

Optionr5a.4xlarger6a.4xlarger6a.4xlarge vs r5a.4xlarge
On-demandPay by the hour$0.904$0.9072Same
SpotCan be interrupted64% off$0.322574% off$0.2337▼ 28%
1-yr reservedNo upfront37% off$0.5734% off$0.6001▲ 5%
3-yr reservedNo upfront57% off$0.39155% off$0.4115▲ 5%
1-yr savings planHourly commitment27% off$0.65728% off$0.6573Same
3-yr savings planHourly commitment48% off$0.47248% off$0.4732Same

Key differences

The biggest lead each one has.

Where r5a.4xlarge leads
On-demand price$0.904 vs $0.9072 per hour
0% cheaper
Where r6a.4xlarge leads
EBS max bandwidth10,000 Mbps vs 2,880 Mbps
3.5× higher
Clock speed3.6 GHz vs 2.5 GHz
44% higher
Network baseline6.25 Gbps vs 5 Gbps
25% higher

Specs

15 of 40 specs differ. Those are in bold.

Compute4 of 10 differr5a.4xlarger6a.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7571AMD EPYC 7R13 Processor
CPU makerAMDAMD
Clock speed2.5 GHz3.6 GHz
Sustained clock2.5 GHz3.6 GHz
Processor featuresAVX; AVX2; AMD TurboAMD Turbo; AVX; AVX2
BurstableNoNo
MemoryAll 1 matchr5a.4xlarger6a.4xlarge
Memory (GiB)128128
Networking3 of 8 differr5a.4xlarger6a.4xlarge
NetworkUp to 10 GigabitUp to 12500 Megabit
Network baseline5 Gbps6.25 Gbps
Network peak10 Gbps12.5 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differr5a.4xlarger6a.4xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughputUp to 2120 MbpsUp to 6667 Mbps
EBS baseline bandwidth2,880 Mbps5,000 Mbps
EBS max bandwidth2,880 Mbps10,000 Mbps
EBS baseline throughput360 MB/s625 MB/s
EBS max throughput360 MB/s1,250 MB/s
EBS baseline IOPS16,00020,000
EBS max IOPS16,00040,000
Max EBS volumes2727
Instance details1 of 10 differr5a.4xlarger6a.4xlarge
Familyr5ar6a
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor3232
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationYesYes
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for r5a.4xlarge first. Linux, USD per hour.

Regionr5a.4xlarger6a.4xlargeDifference
Asia Pacific (Mumbai)ap-south-1$0.572$0.572Same
US East (N. Virginia)Used in summaryus-east-1$0.904$0.9072Same
US East (Ohio)us-east-2$0.904$0.9072Same
US West (Oregon)us-west-2$0.904$0.9072Same
Canada (Central)ca-central-1$0.992$0.9936Same
US West (N. California)us-west-1$1.008$1.008Same
EU (Ireland)eu-west-1$1.016$1.015Same
EU (London)eu-west-2$1.064$1.066Same
Asia Pacific (Singapore)ap-southeast-1$1.088$1.094▲ 1%
Asia Pacific (Sydney)ap-southeast-2$1.088$1.087Same
Asia Pacific (Tokyo)ap-northeast-1$1.096$1.094Same
EU (Frankfurt)eu-central-1$1.096$1.094Same

Keep exploring

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

r5a.4xlargeMemory optimized, r5a family
r5a.4xlarge prices and specsEvery size in the r5a family

Compare r5a.4xlarge with

c5a.4xlarger5.4xlargem5a.4xlarger5ad.4xlarge
r6a.4xlargeMemory optimized, r6a family
r6a.4xlarge prices and specsEvery size in the r6a family

Compare r6a.4xlarge with

r6g.4xlarger6i.4xlargec6a.4xlargem6a.4xlarger7a.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.