r5b.16xlarge

r5b.16xlarge is an AWS EC2 instance with 64 vCPUs, 512 GiB memory (Intel Xeon Platinum 8259 (Cascade Lake)). In US East (N. Virginia) it costs $4.768 per hour on demand ($3,480.64 per month) for Linux; a 1-year reserved instance with no upfront costs $3.004 per hour, 37% less. Spot capacity is about $1.818 per hour. It is sold in 14 regions.

Prices by region

USD per hour, Linux. Reserved prices are no upfront, standard. Cheapest on-demand first.

RegionOn-demandSpot1-yr reserved3-yr reserved1-yr savings plan3-yr savings plan
US East (N. Virginia) us-east-1$4.768$1.818$3.004$1.931$3.454$2.225
US East (Ohio) us-east-2$4.768$1.822$3.004$1.931$3.454$2.225
US West (Oregon) us-west-2$4.768$2.185$3.004$1.931$3.454$2.225
EU (Stockholm) eu-north-1$5.054$0.6977$3.184$2.047$3.662$2.358
Canada (Central) ca-central-1$5.216$0.7465$3.293$2.022$3.813$2.436
EU (Ireland) eu-west-1$5.344$1.836$3.367$2.193$3.939$2.522
EU (Milan) eu-south-1$5.60$0.9555$3.528$2.268$4.057$2.613
EU (London) eu-west-2$5.60$2.033$3.545$2.367$4.116$2.644
Asia Pacific (Seoul) ap-northeast-2$5.696$1.462$3.588$2.362$4.169$2.719
Asia Pacific (Singapore) ap-southeast-1$5.696$1.783$3.588$2.35$4.169$2.701
EU (Frankfurt) eu-central-1$5.696$1.911$3.588$2.35$4.169$2.701
Asia Pacific (Tokyo) ap-northeast-1$5.792$1.02$3.649$2.383$4.287$2.74
Asia Pacific (Sydney) ap-southeast-2$5.792$2.198$3.649$2.346$4.221$2.702
South America (Sao Paulo) sa-east-1$7.584$0.8049$4.778$3.124$5.601$3.557
Reserved and Savings PlansSpot prices by regionWindows prices by regionAzure equivalents

Prices by operating system in US East (N. Virginia)

Operating systemOn-demand /hr1-yr reserved /hr3-yr reserved /hr
Linux$4.768$3.004$1.931
Ubuntu Pro$4.88––
SUSE$4.893$3.064$1.985
RHEL$5.459$3.695$2.622
Linux SQL Web$5.85$4.085$3.013
RHEL HA$6.355$4.591$3.518
RHEL SQL Web$6.541––
Windows$7.712$5.948$4.875
Windows SQL Web$8.794$7.029$5.957
Linux SQL Std$12.448$10.684$9.611
RHEL SQL Std$13.139––
RHEL HA SQL Std$14.035––
Windows SQL Std$15.392$13.628$12.555
Linux SQL Ent$28.768$27.004$25.931
RHEL SQL Ent$29.459––
RHEL HA SQL Ent$30.355––
Windows SQL Ent$31.712$29.948$28.875

Specs

ComputeValue
vCPUs64
Physical cores32
Threads per core2
Architecturex86_64
ProcessorIntel Xeon Platinum 8259 (Cascade Lake)
CPU makerIntel
Clock speed3.1 GHz
Sustained clock3.1 GHz
Processor featuresIntel AVX; Intel AVX2; Intel AVX512; Intel Turbo
BurstableNo
MemoryValue
Memory (GiB)512
NetworkingValue
Network20 Gbps
Network baseline20 Gbps
Network peak20 Gbps
Enhanced networkingYes (ENA)
EFANo
IPv6Yes
Max network interfaces15
IPv4 addresses per interface50
StorageValue
StorageEBS only
EBS optimizedYes
EBS over NVMeRequired
EBS throughput40 Gbps
EBS baseline bandwidth40,000 Mbps
EBS max bandwidth40,000 Mbps
EBS baseline throughput5,000 MB/s
EBS max throughput5,000 MB/s
EBS baseline IOPS173,333
EBS max IOPS173,333
Max EBS volumes27
Instance detailsValue
Instance typer5b.16xlarge
Familyr5b
CategoryMemory optimized
Current generationYes
Normalization factor128
Bare metalNo
HypervisorNitro
Placement groupsCluster, Partition, Spread
HibernationNo
Nitro EnclavesYes
Boot modesLegacy BIOS, UEFI

Compare r5b.16xlarge

With or without local disk and networking

vs r5.16xlarge

Other generations

vs r8ib.16xlarge

Other r5b sizes

SizevCPUsMemory (GiB)On-demand /hr
r5b.large216$0.149
r5b.xlarge432$0.298
r5b.2xlarge864$0.596
r5b.4xlarge16128$1.192
r5b.8xlarge32256$2.384
r5b.12xlarge48384$3.576
r5b.16xlarge64512$4.768
r5b.24xlarge96768$7.152
r5b.metal96768$7.152

Prices updated 2026-11-12 from AWS public price lists. Compare all AWS EC2 instances.