AWS Amazon EC2

r5b.12xlarge

Part of the R5B Memory Optimized family — High memory-to-vCPU ratio for memory-intensive applications.

Name:rMemory Optimized55th GenerationbBlock Storage Optimized (EBS)12xlarge12 Extra Large

On-demand, Linux

$3.5760/ hr

~$2,610.48/mo · lowest in US East (N. Virginia), us-east-1

Savings Plan, Linux

$1.6684186/ hr

From, with a 3-year Compute Savings Plan, No Upfront: −53% vs on-demand rate (us-east-1)

Per unit

$0.0745/ vCPU-hr

$0.0093/GB-hr

Compute

48vCPUs

24 cores • x86_64

Memory

384GB

8.0 GB / vCPU

Network

10 Gbps

Baseline: 12 Gbps

Storage & EBS

3,750MB/s

Max: 130,000 IOPS

On Google Cloud

The nearest Google Cloud machines to r5b.12xlarge by vCPU and memory, at On-demand Linux rates in Northern Virginia (us-east-1 ↔ us-east4).

Machine	Size	On-demand Linux	vs r5b.12xlarge
r5b.12xlargeThis page · AWS, us-east-1	48 vCPU · 384 GiB	$3.5760/hr	—
n4-highmem-48same 48 vCPU and 384 GiB; Intel on both	48 vCPU · 384 GiB	$2.85648/hr	20% less
n2-highmem-48same 48 vCPU and 384 GiB; Intel on both	48 vCPU · 384 GiB	$3.541104/hr	1.0% less
n4d-highmem-48same 48 vCPU and 384 GiB; Intel vs AMD	48 vCPU · 384 GiB	$2.66832/hr	25% less

Matched on vCPU and memory, then CPU vendor, then rate; a larger size is offered only when nothing is the same size. On-demand Linux only: Spot and commitments work differently on the two clouds, so they aren't compared here.

Technical Specifications & Limits

Hardware specs, container thresholds, and system limits

Compute & Processor

ProcessorIntel Xeon Platinum 8259 (Cascade Lake)

Architecturex86_64 (x86_64)

vCPUs / Threads48 vCPUs

Physical Cores24

Clock Speed3.1 GHz

Intel AVX / AVX2AVX & AVX2 Supported

Intel Turbo BoostYes

Bare MetalNo (Virtualized)

Performance & Benchmarks

CoreMark Score703,744

CoreMark / vCPU14,661.3 / core

FFmpeg Transcoding—

CoreMark per Dollar196,796 score / $

Cost per vCPU-hr$0.0745

Cost per GB-hr$0.0093

Containers & Kubernetes

EKS Max Pods234 pods

Max ENIs8

IPv4/v6 per ENI30

Total Addressable IPs240 total IPs

CNI Prefix DelegationSupported (High Density)

Networking & Bandwidth

Network Performance10 Gbps

Baseline Bandwidth12 Gbps

Burst / Peak Bandwidth12 Gbps

Enhanced NetworkingYes

EFA SupportNo

IPv6 SupportNative Dual-Stack Supported

Storage & EBS Optimization

Storage ConfigurationEBS only

Local NVMe DiskNone (EBS only)

EBS Baseline Throughput3750 MB/s

EBS Max Throughput3750 MB/s

EBS Baseline IOPS130,000

EBS Max / Burst IOPS130,000

Dedicated EBS Throughput30 Gbps

Platform & Architecture Details

Hypervisor / SystemAWS Nitro System (PCIe Offload)

Nitro EnclavesSupported (Isolated security enclaves)

Normalization Factor96

Generation StatusCurrent Generation (Recommended)

Rates by region

Live on-demand rates across all global AWS cloud regions

Lowest Price Region

$3.5760/ hr

US East (N. Virginia) (us-east-1)

Highest Price Region

$5.6880/ hr

South America (Sao Paulo) (sa-east-1)

Global Fleet Average

$4.1450/ hr

Across all active regions

Regional Coverage

14regions

Available worldwide

Linux — Available in all 14 regions
Region	On-Demand Price	% vs On-Demand Rate
ap-northeast-2 Asia Pacific (Seoul)	$4.2720
ap-southeast-1 Asia Pacific (Singapore)	$4.2720
ap-southeast-2 Asia Pacific (Sydney)	$4.3440
ap-northeast-1 Asia Pacific (Tokyo)	$4.3440
ca-central-1 Canada (Central)	$3.9120
eu-central-1 EU (Frankfurt)	$4.2720
eu-west-1 EU (Ireland)	$4.0080
eu-west-2 EU (London)	$4.2000
eu-south-1 EU (Milan)	$4.2000
eu-north-1 EU (Stockholm)	$3.7906
sa-east-1 South America (Sao Paulo) Highest	$5.6880
us-east-1 US East (N. Virginia) Lowest	$3.5760
us-east-2 US East (Ohio) Lowest	$3.5760
us-west-2 US West (Oregon) Lowest	$3.5760

Windows — Available in all 14 regions
Region	On-Demand Price	% vs On-Demand Rate
ap-northeast-2 Asia Pacific (Seoul)	$6.4800
ap-southeast-1 Asia Pacific (Singapore)	$6.4800
ap-southeast-2 Asia Pacific (Sydney)	$6.5520
ap-northeast-1 Asia Pacific (Tokyo)	$6.5520
ca-central-1 Canada (Central)	$6.1200
eu-central-1 EU (Frankfurt)	$6.4800
eu-west-1 EU (Ireland)	$6.2160
eu-west-2 EU (London)	$6.4080
eu-south-1 EU (Milan)	$6.4080
eu-north-1 EU (Stockholm)	$5.9986
sa-east-1 South America (Sao Paulo) Highest	$7.8960
us-east-1 US East (N. Virginia) Lowest	$5.7840
us-east-2 US East (Ohio) Lowest	$5.7840
us-west-2 US West (Oregon) Lowest	$5.7840

Savings Plans: what to know

A Savings Plan commits you to a dollar amount per hour of spend for one or three years, not to an instance: usage up to that amount is billed at the plan's rates and the rest at on-demand, and unused commitment is still billed.
A Compute Savings Plan follows your usage across instance families, sizes, regions and operating systems; an EC2 Instance Savings Plan is locked to one family in one region in exchange for a lower rate (what that flexibility costs).
In US East (N. Virginia) (us-east-1), the 3-year Compute Savings Plan rate (No Upfront) for r5b.12xlarge on Linux is 47% of the on-demand rate, so the instance has to run at least 47% of the hours for the commitment to cost less than on-demand.
On Windows a plan discounts only the compute part of the rate: the Windows license part costs the same as on demand, so the percentage off is smaller than on Linux.
Rates are AWS's effective hourly rate for each payment option; All Upfront pays the whole term's commitment at purchase, which is why its hourly rate is lower; Partial Upfront (at least half up front) isn't shown on this page. The Savings Plans calculator has all three and sizes a commitment for this instance or a mix of them. How AWS applies a plan each hour: how Compute Savings Plans decide what they cover. Sizing one for elastic workloads: managing Compute Savings Plans.