r6a.12xlargevsr6i.12xlarge

r6a.12xlarge is 10% cheaper than r6i.12xlarge on demand in US East (N. Virginia), saving $220.75 a month.

At a glancer6a.12xlarger6i.12xlarge
On-demand$2.722/hr10% less$3.024/hr
Lowest rate$0.6465/hr24% lessSpot, can be interrupted$0.8462/hrSpot, can be interrupted
Size48 vCPUs, 384 GiB48 vCPUs, 384 GiB
ProcessorAMD EPYC 7R13 ProcessorIntel Xeon 8375C (Ice Lake)
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.

Optionr6a.12xlarger6i.12xlarger6i.12xlarge vs r6a.12xlarge
On-demandPay by the hour$2.722$3.024▲ 11%
SpotCan be interrupted76% off$0.646572% off$0.8462▲ 31%
1-yr reservedNo upfront34% off$1.8034% off$2.00▲ 11%
3-yr reservedNo upfront55% off$1.23455% off$1.372▲ 11%
1-yr savings planHourly commitment28% off$1.97228% off$2.191▲ 11%
3-yr savings planHourly commitment48% off$1.4248% off$1.577▲ 11%

Key differences

The biggest lead each one has.

Where r6a.12xlarge leads
On-demand price$2.722 vs $3.024 per hour
10% cheaper
Clock speed3.6 GHz vs 3.5 GHz
3% higher
Where r6i.12xlarge leads

No clear lead on the measures we compare.

Specs

7 of 40 specs differ. Those are in bold.

Compute5 of 10 differr6a.12xlarger6i.12xlarge
vCPUs4848
Physical cores2424
Threads per core22
Architecturex86_64x86_64
ProcessorAMD EPYC 7R13 ProcessorIntel Xeon 8375C (Ice Lake)
CPU makerAMDIntel
Clock speed3.6 GHz3.5 GHz
Sustained clock3.6 GHz3.5 GHz
Processor featuresAMD Turbo; AVX; AVX2Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo
BurstableNoNo
MemoryAll 1 matchr6a.12xlarger6i.12xlarge
Memory (GiB)384384
NetworkingAll 8 matchr6a.12xlarger6i.12xlarge
Network18750 Megabit18750 Megabit
Network baseline18.75 Gbps18.75 Gbps
Network peak18.75 Gbps18.75 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage1 of 11 differr6a.12xlarger6i.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput10000 Mbps15000 Mbps
EBS baseline bandwidth15,000 Mbps15,000 Mbps
EBS max bandwidth15,000 Mbps15,000 Mbps
EBS baseline throughput1,875 MB/s1,875 MB/s
EBS max throughput1,875 MB/s1,875 MB/s
EBS baseline IOPS60,00060,000
EBS max IOPS60,00060,000
Max EBS volumes2727
Instance details1 of 10 differr6a.12xlarger6i.12xlarge
Familyr6ar6i
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 r6a.12xlarge first. Linux, USD per hour.

Regionr6a.12xlarger6i.12xlargeDifference
Asia Pacific (Hyderabad)ap-south-2$1.716$3.12▲ 82%
Asia Pacific (Mumbai)ap-south-1$1.716$3.12▲ 82%
US East (N. Virginia)Used in summaryus-east-1$2.722$3.024▲ 11%
US East (Ohio)us-east-2$2.722$3.024▲ 11%
US West (Oregon)us-west-2$2.722$3.024▲ 11%
Canada (Central)ca-central-1$2.981$3.312▲ 11%
US West (N. California)us-west-1$3.024$3.36▲ 11%
EU (Ireland)eu-west-1$3.046$3.384▲ 11%
EU (London)eu-west-2$3.197$3.552▲ 11%
Asia Pacific (Sydney)ap-southeast-2$3.262$3.624▲ 11%
Asia Pacific (Singapore)ap-southeast-1$3.283$3.648▲ 11%
Asia Pacific (Tokyo)ap-northeast-1$3.283$3.648▲ 11%
EU (Frankfurt)eu-central-1$3.283$3.648▲ 11%

Keep exploring

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

r6a.12xlargeMemory optimized, r6a family
r6a.12xlarge prices and specsEvery size in the r6a family

Compare r6a.12xlarge with

r6g.12xlargec6a.12xlargem6a.12xlarger5a.12xlarger7a.12xlarge
r6i.12xlargeMemory optimized, r6i family
r6i.12xlarge prices and specsEvery size in the r6i family

Compare r6i.12xlarge with

c6i.12xlargem6i.12xlarger6g.12xlarger6id.12xlarger6idn.12xlarger6in.12xlarger5.12xlarger7i.12xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 55% 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.