r5a.16xlargevsr5ad.16xlarge

r5a.16xlarge is 14% cheaper than r5ad.16xlarge on demand in US East (N. Virginia), saving $420.48 a month.

At a glancer5a.16xlarger5ad.16xlarge
On-demand$3.616/hr14% less$4.192/hr
Lowest rate$1.092/hrSpot, can be interrupted$0.8968/hr18% lessSpot, can be interrupted
Size64 vCPUs, 512 GiB64 vCPUs, 512 GiB
ProcessorAMD EPYC 7571AMD EPYC 7571
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.16xlarger5ad.16xlarger5ad.16xlarge vs r5a.16xlarge
On-demandPay by the hour$3.616$4.192▲ 16%
SpotCan be interrupted70% off$1.09279% off$0.8968▼ 18%
1-yr reservedNo upfront37% off$2.27837% off$2.641▲ 16%
3-yr reservedNo upfront57% off$1.56257% off$1.811▲ 16%
1-yr savings planHourly commitment27% off$2.62727% off$3.05▲ 16%
3-yr savings planHourly commitment48% off$1.88648% off$2.16▲ 15%

Key differences

The biggest lead each one has.

Where r5a.16xlarge leads
On-demand price$3.616 vs $4.192 per hour
14% cheaper
Max EBS volumes27 vs 23
17% higher
Where r5ad.16xlarge leads

No clear lead on the measures we compare.

Specs

4 of 41 specs differ. Those are in bold.

ComputeAll 10 matchr5a.16xlarger5ad.16xlarge
vCPUs6464
Physical cores3232
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7571AMD EPYC 7571
CPU makerAMDAMD
Clock speed2.5 GHz2.5 GHz
Sustained clock2.5 GHz2.5 GHz
Processor featuresAVX; AVX2; AMD TurboAVX; AVX2; AMD Turbo
BurstableNoNo
MemoryAll 1 matchr5a.16xlarger5ad.16xlarge
Memory (GiB)512512
NetworkingAll 8 matchr5a.16xlarger5ad.16xlarge
Network12 Gigabit12 Gigabit
Network baseline12 Gbps12 Gbps
Network peak12 Gbps12 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage3 of 12 differr5a.16xlarger5ad.16xlarge
StorageEBS only4 x 600 NVMe SSD
Local disks–4 × 600 GB SSD
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput7000 Mbps7000 Mbps
EBS baseline bandwidth9,500 Mbps9,500 Mbps
EBS max bandwidth9,500 Mbps9,500 Mbps
EBS baseline throughput1,187.5 MB/s1,187.5 MB/s
EBS max throughput1,187.5 MB/s1,187.5 MB/s
EBS baseline IOPS40,00040,000
EBS max IOPS40,00040,000
Max EBS volumes2723
Instance details1 of 10 differr5a.16xlarger5ad.16xlarge
Familyr5ar5ad
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.16xlarger5ad.16xlargeDifference
Asia Pacific (Mumbai)ap-south-1$2.288$2.658▲ 16%
US East (N. Virginia)Used in summaryus-east-1$3.616$4.192▲ 16%
US East (Ohio)us-east-2$3.616$4.192▲ 16%
US West (Oregon)us-west-2$3.616$4.192▲ 16%
Canada (Central)ca-central-1$3.968$4.608▲ 16%
US West (N. California)us-west-1$4.032$4.736▲ 17%
EU (Ireland)eu-west-1$4.064$4.672▲ 15%
EU (London)eu-west-2$4.256$4.928▲ 16%
EU (Paris)eu-west-3$4.256$4.896▲ 15%
Asia Pacific (Seoul)ap-northeast-2$4.352$5.056▲ 16%
Asia Pacific (Singapore)ap-southeast-1$4.352$5.088▲ 17%
Asia Pacific (Sydney)ap-southeast-2$4.352$5.088▲ 17%
AWS GovCloud (US-West)us-gov-west-1$4.352$5.056▲ 16%
Asia Pacific (Tokyo)ap-northeast-1$4.384$5.088▲ 16%
EU (Frankfurt)eu-central-1$4.384$5.056▲ 15%
South America (Sao Paulo)sa-east-1$5.792$6.656▲ 15%

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.16xlarger6a.16xlarge
r5ad.16xlargeMemory optimized, r5ad family
r5ad.16xlarge prices and specsEvery size in the r5ad family

Compare r5ad.16xlarge with

c5ad.16xlarger5d.16xlargem5ad.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 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.