r5.8xlargevsr5b.8xlarge

r5.8xlarge is 15% cheaper than r5b.8xlarge on demand in US East (N. Virginia), saving $268.64 a month.

At a glancer5.8xlarger5b.8xlarge
On-demand$2.016/hr15% less$2.384/hr
Lowest rate$0.421/hr47% lessSpot, can be interrupted$0.8005/hrSpot, can be interrupted
Size32 vCPUs, 256 GiB32 vCPUs, 256 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.

Optionr5.8xlarger5b.8xlarger5b.8xlarge vs r5.8xlarge
On-demandPay by the hour$2.016$2.384▲ 18%
SpotCan be interrupted79% off$0.42166% off$0.8005▲ 90%
1-yr reservedNo upfront37% off$1.2737% off$1.502▲ 18%
3-yr reservedNo upfront57% off$0.87160% off$0.9655▲ 11%
1-yr savings planHourly commitment28% off$1.46128% off$1.727▲ 18%
3-yr savings planHourly commitment48% off$1.05253% off$1.112▲ 6%

Key differences

The biggest lead each one has.

Where r5.8xlarge leads
On-demand price$2.016 vs $2.384 per hour
15% cheaper
Where r5b.8xlarge leads
EBS baseline bandwidth20,000 Mbps vs 6,800 Mbps
2.9× higher

Specs

10 of 41 specs differ. Those are in bold.

Compute2 of 11 differr5.8xlarger5b.8xlarge
vCPUs3232
Physical cores1616
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
ECU128–
MemoryAll 1 matchr5.8xlarger5b.8xlarge
Memory (GiB)256256
NetworkingAll 8 matchr5.8xlarger5b.8xlarge
Network10 Gigabit10 Gigabit
Network baseline10 Gbps10 Gbps
Network peak10 Gbps10 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3030
Storage7 of 11 differr5.8xlarger5b.8xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput6800 Mbps5 Gbps
EBS baseline bandwidth6,800 Mbps20,000 Mbps
EBS max bandwidth6,800 Mbps20,000 Mbps
EBS baseline throughput850 MB/s2,500 MB/s
EBS max throughput850 MB/s2,500 MB/s
EBS baseline IOPS30,00086,667
EBS max IOPS30,00086,667
Max EBS volumes2727
Instance details1 of 10 differr5.8xlarger5b.8xlarge
Familyr5r5b
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor6464
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 r5.8xlarge first. Linux, USD per hour.

Regionr5.8xlarger5b.8xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.016$2.384▲ 18%
US East (Ohio)us-east-2$2.016$2.384▲ 18%
US West (Oregon)us-west-2$2.016$2.384▲ 18%
EU (Stockholm)eu-north-1$2.144$2.527▲ 18%
Canada (Central)ca-central-1$2.208$2.608▲ 18%
EU (Ireland)eu-west-1$2.256$2.672▲ 18%
EU (London)eu-west-2$2.368$2.80▲ 18%
EU (Milan)eu-south-1$2.368$2.80▲ 18%
Asia Pacific (Sydney)ap-southeast-2$2.416$2.896▲ 20%
Asia Pacific (Seoul)ap-northeast-2$2.432$2.848▲ 17%
Asia Pacific (Singapore)ap-southeast-1$2.432$2.848▲ 17%
Asia Pacific (Tokyo)ap-northeast-1$2.432$2.896▲ 19%
EU (Frankfurt)eu-central-1$2.432$2.848▲ 17%
South America (Sao Paulo)sa-east-1$3.216$3.792▲ 18%

Keep exploring

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

r5.8xlargeMemory optimized, r5 family
r5.8xlarge prices and specsEvery size in the r5 family

Compare r5.8xlarge with

m5.8xlarger5d.8xlarger5dn.8xlarger5n.8xlarger5a.8xlarger4.8xlarger6i.8xlarge
r5b.8xlargeMemory optimized, r5b family
r5b.8xlarge prices and specsEvery size in the r5b family

Compare r5b.8xlarge with

r8ib.8xlarge

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.