r5b.8xlargevsr8ib.8xlarge

r5b.8xlarge is 29% cheaper than r8ib.8xlarge on demand in US East (N. Virginia), saving $703.14 a month.

At a glancer5b.8xlarger8ib.8xlarge
On-demand$2.384/hr29% less$3.347/hr
Lowest rate$0.8005/hr24% lessSpot, can be interrupted$1.056/hrSpot, can be interrupted
Size32 vCPUs, 256 GiB32 vCPUs, 256 GiB
ProcessorIntel Xeon Platinum 8259 (Cascade Lake)Intel Xeon Scalable (Granite Rapids)
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.

Optionr5b.8xlarger8ib.8xlarger8ib.8xlarge vs r5b.8xlarge
On-demandPay by the hour$2.384$3.347▲ 40%
SpotCan be interrupted66% off$0.800568% off$1.056▲ 32%
1-yr reservedNo upfront37% off$1.502——
3-yr reservedNo upfront60% off$0.9655——
1-yr savings planHourly commitment28% off$1.72728% off$2.425▲ 40%
3-yr savings planHourly commitment53% off$1.11253% off$1.562▲ 40%

Key differences

The biggest lead each one has.

Where r5b.8xlarge leads
On-demand price$2.384 vs $3.347 per hour
29% cheaper
Where r8ib.8xlarge leads
Network baseline33.333 Gbps vs 10 Gbps
3.3× higher
EBS baseline IOPS120,000 vs 86,667
38% higher
Clock speed3.9 GHz vs 3.1 GHz
26% higher

Specs

17 of 40 specs differ. Those are in bold.

Compute4 of 10 differr5b.8xlarger8ib.8xlarge
vCPUs3232
Physical cores1616
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8259 (Cascade Lake)Intel Xeon Scalable (Granite Rapids)
CPU makerIntelIntel
Clock speed3.1 GHz3.9 GHz
Sustained clock3.1 GHz3.9 GHz
Processor featuresIntel AVX; Intel AVX2; Intel AVX512; Intel TurboIntel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX
BurstableNoNo
MemoryAll 1 matchr5b.8xlarger8ib.8xlarge
Memory (GiB)256256
Networking4 of 8 differr5b.8xlarger8ib.8xlarge
Network10 Gigabit33.33 Gigabit
Network baseline10 Gbps33.333 Gbps
Network peak10 Gbps33.333 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces88
IPv4 addresses per interface3050
Storage8 of 11 differr5b.8xlarger8ib.8xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput5 Gbps25000 Mbps
EBS baseline bandwidth20,000 Mbps25,000 Mbps
EBS max bandwidth20,000 Mbps25,000 Mbps
EBS baseline throughput2,500 MB/s3,125 MB/s
EBS max throughput2,500 MB/s3,125 MB/s
EBS baseline IOPS86,667120,000
EBS max IOPS86,667120,000
Max EBS volumes2732
Instance details1 of 10 differr5b.8xlarger8ib.8xlarge
Familyr5br8ib
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 r5b.8xlarge first. Linux, USD per hour.

Regionr5b.8xlarger8ib.8xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.384$3.347▲ 40%
US East (Ohio)us-east-2$2.384$3.347▲ 40%
US West (Oregon)us-west-2$2.384$3.347▲ 40%
EU (Ireland)eu-west-1$2.672$3.752▲ 40%
EU (Frankfurt)eu-central-1$2.848$3.999▲ 40%
Asia Pacific (Tokyo)ap-northeast-1$2.896$4.066▲ 40%

Keep exploring

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

r5b.8xlargeMemory optimized, r5b family
r5b.8xlarge prices and specsEvery size in the r5b family

Compare r5b.8xlarge with

r5.8xlarge
r8ib.8xlargeMemory optimized, r8ib family
r8ib.8xlarge prices and specsEvery size in the r8ib family

Compare r8ib.8xlarge with

r8i.8xlargem8ib.8xlargec8ib.8xlarger8gb.8xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 53–60% 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.