r5.12xlargevsr6i.12xlarge

r5.12xlarge and r6i.12xlarge cost the same on demand in US East (N. Virginia), $3.024 per hour.

At a glancer5.12xlarger6i.12xlarge
On-demand$3.024/hr$3.024/hr
Lowest rate$0.7262/hr14% lessSpot, can be interrupted$0.8462/hrSpot, can be interrupted
Size48 vCPUs, 384 GiB48 vCPUs, 384 GiB
ProcessorIntel Xeon Platinum 8175Intel 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.

Optionr5.12xlarger6i.12xlarger6i.12xlarge vs r5.12xlarge
On-demandPay by the hour$3.024$3.024Same
SpotCan be interrupted76% off$0.726272% off$0.8462▲ 17%
1-yr reservedNo upfront37% off$1.90534% off$2.00▲ 5%
3-yr reservedNo upfront57% off$1.30655% off$1.372▲ 5%
1-yr savings planHourly commitment28% off$2.19128% off$2.191Same
3-yr savings planHourly commitment48% off$1.57748% off$1.577Same

Key differences

The biggest lead each one has.

Where r5.12xlarge leads

No clear lead on the measures we compare.

Where r6i.12xlarge leads
EBS baseline bandwidth15,000 Mbps vs 9,500 Mbps
58% higher
Network baseline18.75 Gbps vs 12 Gbps
56% higher
Clock speed3.5 GHz vs 3.1 GHz
13% higher

Specs

15 of 41 specs differ. Those are in bold.

Compute4 of 11 differr5.12xlarger6i.12xlarge
vCPUs4848
Physical cores2424
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8175Intel Xeon 8375C (Ice Lake)
CPU makerIntelIntel
Clock speed3.1 GHz3.5 GHz
Sustained clock3.1 GHz3.5 GHz
Processor featuresIntel AVX; Intel AVX2; Intel AVX512; Intel TurboIntel AVX; Intel AVX2; Intel AVX512; Intel Turbo
BurstableNoNo
ECU168–
MemoryAll 1 matchr5.12xlarger6i.12xlarge
Memory (GiB)384384
Networking3 of 8 differr5.12xlarger6i.12xlarge
Network10 Gigabit18750 Megabit
Network baseline12 Gbps18.75 Gbps
Network peak12 Gbps18.75 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differr5.12xlarger6i.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput9500 Mbps15000 Mbps
EBS baseline bandwidth9,500 Mbps15,000 Mbps
EBS max bandwidth9,500 Mbps15,000 Mbps
EBS baseline throughput1,187.5 MB/s1,875 MB/s
EBS max throughput1,187.5 MB/s1,875 MB/s
EBS baseline IOPS40,00060,000
EBS max IOPS40,00060,000
Max EBS volumes2727
Instance details1 of 10 differr5.12xlarger6i.12xlarge
Familyr5r6i
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 r5.12xlarge first. Linux, USD per hour.

Regionr5.12xlarger6i.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$3.024$3.024Same
US East (Ohio)us-east-2$3.024$3.024Same
US West (Oregon)us-west-2$3.024$3.024Same
Asia Pacific (Hyderabad)ap-south-2$3.12$3.12Same
Asia Pacific (Mumbai)ap-south-1$3.12$3.12Same
EU (Stockholm)eu-north-1$3.216$3.216Same
Canada (Central)ca-central-1$3.312$3.312Same
Canada West (Calgary)ca-west-1$3.312$3.312Same
US West (N. California)us-west-1$3.36$3.36Same
EU (Ireland)eu-west-1$3.384$3.384Same
EU (London)eu-west-2$3.552$3.552Same
EU (Milan)eu-south-1$3.552$3.552Same
EU (Paris)eu-west-3$3.552$3.552Same
Israel (Tel Aviv)il-central-1$3.553$3.553Same
Asia Pacific (Sydney)ap-southeast-2$3.624$3.624Same
AWS GovCloud (US-East)us-gov-east-1$3.624$3.624Same
AWS GovCloud (US-West)us-gov-west-1$3.624$3.624Same
Asia Pacific (Osaka)ap-northeast-3$3.648$3.648Same
Asia Pacific (Seoul)ap-northeast-2$3.648$3.648Same
Asia Pacific (Singapore)ap-southeast-1$3.648$3.648Same
Asia Pacific (Tokyo)ap-northeast-1$3.648$3.648Same
EU (Frankfurt)eu-central-1$3.648$3.648Same
Middle East (Bahrain)me-south-1$3.722$3.722Same
Middle East (UAE)me-central-1$3.722$3.722Same
Asia Pacific (Hong Kong)ap-east-1$4.008$4.008Same
Europe (Zurich)eu-central-2$4.013$4.013Same
Africa (Cape Town)af-south-1$4.032$4.032Same
South America (Sao Paulo)sa-east-1$4.824$4.824Same

Keep exploring

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

r5.12xlargeMemory optimized, r5 family
r5.12xlarge prices and specsEvery size in the r5 family

Compare r5.12xlarge with

c5.12xlargem5.12xlarger5d.12xlarger5dn.12xlarger5n.12xlarger5a.12xlarger5b.12xlarge
r6i.12xlargeMemory optimized, r6i family
r6i.12xlarge prices and specsEvery size in the r6i family

Compare r6i.12xlarge with

c6i.12xlargem6i.12xlarger6g.12xlarger6id.12xlarger6a.12xlarger6idn.12xlarger6in.12xlarger7i.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.