r5.16xlargevsr5b.16xlarge

r5.16xlarge is 15% cheaper than r5b.16xlarge on demand in US East (N. Virginia), saving $537.28 a month.

At a glancer5.16xlarger5b.16xlarge
On-demand$4.032/hr15% less$4.768/hr
Lowest rate$0.4179/hr77% lessSpot, can be interrupted$1.818/hrSpot, can be interrupted
Size64 vCPUs, 512 GiB64 vCPUs, 512 GiB
ProcessorIntel Xeon Platinum 8175Intel Xeon Platinum 8259 (Cascade 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.

Optionr5.16xlarger5b.16xlarger5b.16xlarge vs r5.16xlarge
On-demandPay by the hour$4.032$4.768▲ 18%
SpotCan be interrupted90% off$0.417962% off$1.818▲ 335%
1-yr reservedNo upfront37% off$2.5437% off$3.004▲ 18%
3-yr reservedNo upfront57% off$1.74260% off$1.931▲ 11%
1-yr savings planHourly commitment28% off$2.92128% off$3.454▲ 18%
3-yr savings planHourly commitment48% off$2.10353% off$2.225▲ 6%

Key differences

The biggest lead each one has.

Where r5.16xlarge leads
On-demand price$4.032 vs $4.768 per hour
15% cheaper
Where r5b.16xlarge leads
EBS baseline bandwidth40,000 Mbps vs 13,600 Mbps
2.9× higher

Specs

10 of 41 specs differ. Those are in bold.

Compute2 of 11 differr5.16xlarger5b.16xlarge
vCPUs6464
Physical cores3232
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8175Intel Xeon Platinum 8259 (Cascade Lake)
CPU makerIntelIntel
Clock speed3.1 GHz3.1 GHz
Sustained clock3.1 GHz3.1 GHz
Processor featuresIntel AVX; Intel AVX2; Intel AVX512; Intel TurboIntel AVX; Intel AVX2; Intel AVX512; Intel Turbo
BurstableNoNo
ECU256–
MemoryAll 1 matchr5.16xlarger5b.16xlarge
Memory (GiB)512512
NetworkingAll 8 matchr5.16xlarger5b.16xlarge
Network20 Gigabit20 Gigabit
Network baseline20 Gbps20 Gbps
Network peak20 Gbps20 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1515
IPv4 addresses per interface5050
Storage7 of 11 differr5.16xlarger5b.16xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput13600 Mbps40 Gbps
EBS baseline bandwidth13,600 Mbps40,000 Mbps
EBS max bandwidth13,600 Mbps40,000 Mbps
EBS baseline throughput1,700 MB/s5,000 MB/s
EBS max throughput1,700 MB/s5,000 MB/s
EBS baseline IOPS60,000173,333
EBS max IOPS60,000173,333
Max EBS volumes2727
Instance details1 of 10 differr5.16xlarger5b.16xlarge
Familyr5r5b
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 r5.16xlarge first. Linux, USD per hour.

Regionr5.16xlarger5b.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$4.032$4.768▲ 18%
US East (Ohio)us-east-2$4.032$4.768▲ 18%
US West (Oregon)us-west-2$4.032$4.768▲ 18%
EU (Stockholm)eu-north-1$4.288$5.054▲ 18%
Canada (Central)ca-central-1$4.416$5.216▲ 18%
EU (Ireland)eu-west-1$4.512$5.344▲ 18%
EU (London)eu-west-2$4.736$5.60▲ 18%
EU (Milan)eu-south-1$4.736$5.60▲ 18%
Asia Pacific (Sydney)ap-southeast-2$4.832$5.792▲ 20%
Asia Pacific (Seoul)ap-northeast-2$4.864$5.696▲ 17%
Asia Pacific (Singapore)ap-southeast-1$4.864$5.696▲ 17%
Asia Pacific (Tokyo)ap-northeast-1$4.864$5.792▲ 19%
EU (Frankfurt)eu-central-1$4.864$5.696▲ 17%
South America (Sao Paulo)sa-east-1$6.432$7.584▲ 18%

Keep exploring

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

r5.16xlargeMemory optimized, r5 family
r5.16xlarge prices and specsEvery size in the r5 family

Compare r5.16xlarge with

m5.16xlarger5d.16xlarger5dn.16xlarger5n.16xlarger5a.16xlarger4.16xlarger6i.16xlarge
r5b.16xlargeMemory optimized, r5b family
r5b.16xlarge prices and specsEvery size in the r5b family

Compare r5b.16xlarge with

r8ib.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 57–60% 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.