r5a.4xlargevsr5ad.4xlarge

r5a.4xlarge is 14% cheaper than r5ad.4xlarge on demand in US East (N. Virginia), saving $105.12 a month.

At a glancer5a.4xlarger5ad.4xlarge
On-demand$0.904/hr14% less$1.048/hr
Lowest rate$0.3225/hr8% lessSpot, can be interrupted$0.3501/hrSpot, can be interrupted
Size16 vCPUs, 128 GiB16 vCPUs, 128 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.4xlarger5ad.4xlarger5ad.4xlarge vs r5a.4xlarge
On-demandPay by the hour$0.904$1.048▲ 16%
SpotCan be interrupted64% off$0.322567% off$0.3501▲ 9%
1-yr reservedNo upfront37% off$0.5737% off$0.66▲ 16%
3-yr reservedNo upfront57% off$0.39157% off$0.453▲ 16%
1-yr savings planHourly commitment27% off$0.65727% off$0.763▲ 16%
3-yr savings planHourly commitment48% off$0.47248% off$0.54▲ 14%

Key differences

The biggest lead each one has.

Where r5a.4xlarge leads
On-demand price$0.904 vs $1.048 per hour
14% cheaper
Sustained clock2.5 GHz vs 2.2 GHz
14% higher
Max EBS volumes27 vs 25
8% higher
Where r5ad.4xlarge leads

No clear lead on the measures we compare.

Specs

5 of 41 specs differ. Those are in bold.

Compute1 of 10 differr5a.4xlarger5ad.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7571AMD EPYC 7571
CPU makerAMDAMD
Clock speed2.5 GHz2.5 GHz
Sustained clock2.5 GHz2.2 GHz
Processor featuresAVX; AVX2; AMD TurboAVX; AVX2; AMD Turbo
BurstableNoNo
MemoryAll 1 matchr5a.4xlarger5ad.4xlarge
Memory (GiB)128128
NetworkingAll 8 matchr5a.4xlarger5ad.4xlarge
NetworkUp to 10 GigabitUp to 10 Gigabit
Network baseline5 Gbps5 Gbps
Network peak10 Gbps10 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage3 of 12 differr5a.4xlarger5ad.4xlarge
StorageEBS only2 x 300 NVMe SSD
Local disks–2 × 300 GB SSD
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughputUp to 2120 MbpsUp to 2120 Mbps
EBS baseline bandwidth2,880 Mbps2,880 Mbps
EBS max bandwidth2,880 Mbps2,880 Mbps
EBS baseline throughput360 MB/s360 MB/s
EBS max throughput360 MB/s360 MB/s
EBS baseline IOPS16,00016,000
EBS max IOPS16,00016,000
Max EBS volumes2725
Instance details1 of 10 differr5a.4xlarger5ad.4xlarge
Familyr5ar5ad
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.4xlarger5ad.4xlargeDifference
Asia Pacific (Mumbai)ap-south-1$0.572$0.664▲ 16%
US East (N. Virginia)Used in summaryus-east-1$0.904$1.048▲ 16%
US East (Ohio)us-east-2$0.904$1.048▲ 16%
US West (Oregon)us-west-2$0.904$1.048▲ 16%
Canada (Central)ca-central-1$0.992$1.152▲ 16%
US West (N. California)us-west-1$1.008$1.184▲ 17%
EU (Ireland)eu-west-1$1.016$1.168▲ 15%
EU (London)eu-west-2$1.064$1.232▲ 16%
EU (Paris)eu-west-3$1.064$1.224▲ 15%
Asia Pacific (Seoul)ap-northeast-2$1.088$1.264▲ 16%
Asia Pacific (Singapore)ap-southeast-1$1.088$1.272▲ 17%
Asia Pacific (Sydney)ap-southeast-2$1.088$1.272▲ 17%
AWS GovCloud (US-West)us-gov-west-1$1.088$1.264▲ 16%
Asia Pacific (Tokyo)ap-northeast-1$1.096$1.272▲ 16%
EU (Frankfurt)eu-central-1$1.096$1.264▲ 15%
South America (Sao Paulo)sa-east-1$1.448$1.664▲ 15%

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.4xlarger6a.4xlarge
r5ad.4xlargeMemory optimized, r5ad family
r5ad.4xlarge prices and specsEvery size in the r5ad family

Compare r5ad.4xlarge with

c5ad.4xlarger5d.4xlargem5ad.4xlarge

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.