r5a.16xlargevsr6a.16xlarge

r5a.16xlarge is 0% cheaper than r6a.16xlarge on demand in US East (N. Virginia), saving $9.34 a month.

At a glancer5a.16xlarger6a.16xlarge
On-demand$3.616/hr0% less$3.629/hr
Lowest rate$1.092/hrSpot, can be interrupted$0.7207/hr34% lessSpot, can be interrupted
Size64 vCPUs, 512 GiB64 vCPUs, 512 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.16xlarger6a.16xlarger6a.16xlarge vs r5a.16xlarge
On-demandPay by the hour$3.616$3.629Same
SpotCan be interrupted70% off$1.09280% off$0.7207▼ 34%
1-yr reservedNo upfront37% off$2.27834% off$2.401▲ 5%
3-yr reservedNo upfront57% off$1.56255% off$1.646▲ 5%
1-yr savings planHourly commitment27% off$2.62728% off$2.629Same
3-yr savings planHourly commitment48% off$1.88648% off$1.893Same

Key differences

The biggest lead each one has.

Where r5a.16xlarge leads
On-demand price$3.616 vs $3.629 per hour
0% cheaper
Where r6a.16xlarge leads
EBS baseline bandwidth20,000 Mbps vs 9,500 Mbps
2.1× higher
Network baseline25 Gbps vs 12 Gbps
2.1× higher
Clock speed3.6 GHz vs 2.5 GHz
44% higher

Specs

15 of 40 specs differ. Those are in bold.

Compute4 of 10 differr5a.16xlarger6a.16xlarge
vCPUs6464
Physical cores3232
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.16xlarger6a.16xlarge
Memory (GiB)512512
Networking3 of 8 differr5a.16xlarger6a.16xlarge
Network12 Gigabit25000 Megabit
Network baseline12 Gbps25 Gbps
Network peak12 Gbps25 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage7 of 11 differr5a.16xlarger6a.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput7000 Mbps13333 Mbps
EBS baseline bandwidth9,500 Mbps20,000 Mbps
EBS max bandwidth9,500 Mbps20,000 Mbps
EBS baseline throughput1,187.5 MB/s2,500 MB/s
EBS max throughput1,187.5 MB/s2,500 MB/s
EBS baseline IOPS40,00080,000
EBS max IOPS40,00080,000
Max EBS volumes2727
Instance details1 of 10 differr5a.16xlarger6a.16xlarge
Familyr5ar6a
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor128128
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoNo
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for r5a.16xlarge first. Linux, USD per hour.

Regionr5a.16xlarger6a.16xlargeDifference
Asia Pacific (Mumbai)ap-south-1$2.288$2.288Same
US East (N. Virginia)Used in summaryus-east-1$3.616$3.629Same
US East (Ohio)us-east-2$3.616$3.629Same
US West (Oregon)us-west-2$3.616$3.629Same
Canada (Central)ca-central-1$3.968$3.974Same
US West (N. California)us-west-1$4.032$4.032Same
EU (Ireland)eu-west-1$4.064$4.061Same
EU (London)eu-west-2$4.256$4.262Same
Asia Pacific (Singapore)ap-southeast-1$4.352$4.378▲ 1%
Asia Pacific (Sydney)ap-southeast-2$4.352$4.349Same
Asia Pacific (Tokyo)ap-northeast-1$4.384$4.378Same
EU (Frankfurt)eu-central-1$4.384$4.378Same

Keep exploring

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

r5a.16xlargeMemory optimized, r5a family
r5a.16xlarge prices and specsEvery size in the r5a family

Compare r5a.16xlarge with

c5a.16xlarger5.16xlargem5a.16xlarger5ad.16xlarge
r6a.16xlargeMemory optimized, r6a family
r6a.16xlarge prices and specsEvery size in the r6a family

Compare r6a.16xlarge with

r6g.16xlarger6i.16xlargec6a.16xlargem6a.16xlarger7a.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.

Connect AWS account

AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.