r5a.12xlargevsr6a.12xlarge

r5a.12xlarge is 0% cheaper than r6a.12xlarge on demand in US East (N. Virginia), saving $7.01 a month.

At a glancer5a.12xlarger6a.12xlarge
On-demand$2.712/hr0% less$2.722/hr
Lowest rate$0.8553/hrSpot, can be interrupted$0.6465/hr24% lessSpot, can be interrupted
Size48 vCPUs, 384 GiB48 vCPUs, 384 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.12xlarger6a.12xlarger6a.12xlarge vs r5a.12xlarge
On-demandPay by the hour$2.712$2.722Same
SpotCan be interrupted68% off$0.855376% off$0.6465▼ 24%
1-yr reservedNo upfront37% off$1.70934% off$1.80▲ 5%
3-yr reservedNo upfront57% off$1.17255% off$1.234▲ 5%
1-yr savings planHourly commitment27% off$1.97128% off$1.972Same
3-yr savings planHourly commitment48% off$1.41548% off$1.42Same

Key differences

The biggest lead each one has.

Where r5a.12xlarge leads
On-demand price$2.712 vs $2.722 per hour
0% cheaper
Where r6a.12xlarge leads
EBS baseline bandwidth15,000 Mbps vs 6,780 Mbps
2.2× higher
Network baseline18.75 Gbps vs 10 Gbps
88% 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.12xlarger6a.12xlarge
vCPUs4848
Physical cores2424
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.12xlarger6a.12xlarge
Memory (GiB)384384
Networking3 of 8 differr5a.12xlarger6a.12xlarge
Network10 Gigabit18750 Megabit
Network baseline10 Gbps18.75 Gbps
Network peak10 Gbps18.75 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differr5a.12xlarger6a.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput5000 Mbps10000 Mbps
EBS baseline bandwidth6,780 Mbps15,000 Mbps
EBS max bandwidth6,780 Mbps15,000 Mbps
EBS baseline throughput847.5 MB/s1,875 MB/s
EBS max throughput847.5 MB/s1,875 MB/s
EBS baseline IOPS30,00060,000
EBS max IOPS30,00060,000
Max EBS volumes2727
Instance details1 of 10 differr5a.12xlarger6a.12xlarge
Familyr5ar6a
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor9696
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.12xlarge first. Linux, USD per hour.

Regionr5a.12xlarger6a.12xlargeDifference
Asia Pacific (Mumbai)ap-south-1$1.716$1.716Same
US East (N. Virginia)Used in summaryus-east-1$2.712$2.722Same
US East (Ohio)us-east-2$2.712$2.722Same
US West (Oregon)us-west-2$2.712$2.722Same
Canada (Central)ca-central-1$2.976$2.981Same
US West (N. California)us-west-1$3.024$3.024Same
EU (Ireland)eu-west-1$3.048$3.046Same
EU (London)eu-west-2$3.192$3.197Same
Asia Pacific (Singapore)ap-southeast-1$3.264$3.283▲ 1%
Asia Pacific (Sydney)ap-southeast-2$3.264$3.262Same
Asia Pacific (Tokyo)ap-northeast-1$3.288$3.283Same
EU (Frankfurt)eu-central-1$3.288$3.283Same

Keep exploring

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

r5a.12xlargeMemory optimized, r5a family
r5a.12xlarge prices and specsEvery size in the r5a family

Compare r5a.12xlarge with

c5a.12xlarger5.12xlargem5a.12xlarger5ad.12xlarge
r6a.12xlargeMemory optimized, r6a family
r6a.12xlarge prices and specsEvery size in the r6a family

Compare r6a.12xlarge with

r6g.12xlarger6i.12xlargec6a.12xlargem6a.12xlarger7a.12xlarge

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.