AWS R5b instance types

R5b is a memory optimized Amazon EC2 family with 9 instance types, from 2 – 96 vCPUs and 16 GiB – 768 GiB of memory, running on Intel Xeon Platinum 8259 (Cascade Lake). Linux on demand starts at $0.149 per hour.

memory optimizedx86-64

sizes: 9
vCPUs: 2 – 96
memory: 16 GiB – 768 GiB
processor: Intel Xeon Platinum 8259 (Cascade Lake)
on-demand from: $0.149

Compare sizes

R5b sizes and prices

Linux, hourly, US East (N. Virginia) (other regions on each size's page)

Size	vCPU	Memory	Local storage	On-demand	Monthly	Spot	1-yr
r5b.large	2	16 GiB	–	$0.149	$109	$0.0721	$0.0939
r5b.xlarge	4	32 GiB	–	$0.298	$218	$0.1456	$0.1877
r5b.2xlarge	8	64 GiB	–	$0.596	$435	$0.329	$0.3755
r5b.4xlarge	16	128 GiB	–	$1.192	$870	$0.7281	$0.751
r5b.8xlarge	32	256 GiB	–	$2.384	$1,740	$1.305	$1.502
r5b.12xlarge	48	384 GiB	–	$3.576	$2,610	$1.919	$2.253
r5b.16xlarge	64	512 GiB	–	$4.768	$3,481	$2.346	$3.004
r5b.24xlarge	96	768 GiB	–	$7.152	$5,221	$3.651	$4.506
r5b.metal	96	768 GiB	–	$7.152	$5,221	$3.409	$4.506

R5b equivalents on other clouds

closest match to r5b.8xlarge (32 vCPU, 256 GiB)

AzureE32as v5Easv5 family · 32 vCPU · 256 GiB$1.808/hr · East USEasv5 family →

Google Cloudn4d-highmem-32N4D family · 32 vCPU · 256 GiB$1.779/hr · IowaN4D family →

AkamaiG8 Dedicated 128x32Dedicated CPU (G8) family · 32 vCPU · 128 GiB$1.68/hr · Newark, NJDedicated CPU (G8) family →

Vultrvx1-m-32c-256gbVX1: Memory Optimized family · 32 vCPU · 256 GiB$1.28/hr · New JerseyVX1: Memory Optimized family →

Other memory optimized families on AWS

R4 6 R5 9 R5a 8 R5ad 8 R5d 9 R5dn 9 R5n 9 R6a 11 R6g 9 R6gd 9 R6i 10 R6id 10 R6idn 10 R6in 10 R7a 12 R7g 9 R7gd 9 R7i 11 R7iz 10 R8a 12 R8g 12 R8gb 12 R8gd 12 R8gn 12 R8i 13 R8i-flex 7 R8ib 13 R8id 13 R8idb 13 R8idn 13

R5b FAQ

What sizes does the AWS R5b family have?

R5b has 9 instance types, from r5b.large (2 vCPU, 16 GiB) to r5b.metal (96 vCPU, 768 GiB). They run on Intel Xeon Platinum 8259 (Cascade Lake).

What is the cheapest R5b instance type?

r5b.large at $0.149 per hour (Linux, on demand) in US East (N. Virginia), about $109 per month.

What is R5b best for?

R5b is a memory optimized family. Lots of RAM per vCPU (8 GiB and up) for databases, caches and in-memory analytics.