r5b.xlarge

r5b.xlarge is an AWS EC2 instance with 4 vCPUs, 32 GiB memory (Intel Xeon Platinum 8259 (Cascade Lake)). In US East (N. Virginia) it costs $0.298 per hour on demand ($217.54 per month) for Linux; a 1-year reserved instance with no upfront costs $0.1877 per hour, 37% less. Spot capacity is about $0.0957 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.

Region	On-demand	Spot	1-yr reserved	3-yr reserved	1-yr savings plan	3-yr savings plan
US East (N. Virginia) us-east-1	$0.298	$0.0957	$0.1877	$0.1207	$0.2159	$0.139
US East (Ohio) us-east-2	$0.298	$0.0753	$0.1877	$0.1207	$0.2159	$0.139
US West (Oregon) us-west-2	$0.298	$0.1008	$0.1877	$0.1207	$0.2159	$0.139
EU (Stockholm) eu-north-1	$0.3159	$0.0581	$0.199	$0.1279	$0.2289	$0.1474
Canada (Central) ca-central-1	$0.326	$0.1103	$0.2058	$0.1264	$0.2383	$0.1523
EU (Ireland) eu-west-1	$0.334	$0.1363	$0.2104	$0.1371	$0.2462	$0.1576
EU (Milan) eu-south-1	$0.35	$0.0755	$0.2205	$0.1417	$0.2536	$0.1633
EU (London) eu-west-2	$0.35	$0.102	$0.2216	$0.1479	$0.2573	$0.1652
Asia Pacific (Seoul) ap-northeast-2	$0.356	$0.1076	$0.2243	$0.1476	$0.2605	$0.1699
Asia Pacific (Singapore) ap-southeast-1	$0.356	$0.1184	$0.2243	$0.1469	$0.2605	$0.1688
EU (Frankfurt) eu-central-1	$0.356	$0.1408	$0.2243	$0.1469	$0.2605	$0.1688
Asia Pacific (Tokyo) ap-northeast-1	$0.362	$0.1048	$0.2281	$0.149	$0.268	$0.1712
Asia Pacific (Sydney) ap-southeast-2	$0.362	$0.1239	$0.2281	$0.1466	$0.2638	$0.1689
South America (Sao Paulo) sa-east-1	$0.474	$0.0727	$0.2986	$0.1952	$0.3501	$0.2223

Reserved and Savings Plans Spot prices by region Windows prices by region Azure equivalents

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

Operating system	On-demand /hr	1-yr reserved /hr	3-yr reserved /hr
Linux	$0.298	$0.1877	$0.1207
Ubuntu Pro	$0.305	–	–
SUSE	$0.3543	$0.2377	$0.1657
RHEL	$0.3556	$0.2453	$0.1783
Linux SQL Web	$0.3656	$0.2553	$0.1883
RHEL SQL Web	$0.4232	–	–
RHEL HA	$0.4256	$0.3153	$0.2483
Windows	$0.482	$0.3717	$0.3047
Windows SQL Web	$0.5496	$0.4393	$0.3723
Linux SQL Std	$0.778	$0.6677	$0.6007
RHEL SQL Std	$0.8356	–	–
RHEL HA SQL Std	$0.9056	–	–
Windows SQL Std	$0.962	$0.8517	$0.7847
Linux SQL Ent	$1.798	$1.688	$1.621
RHEL SQL Ent	$1.856	–	–
RHEL HA SQL Ent	$1.926	–	–
Windows SQL Ent	$1.982	$1.872	$1.805

Specs

Compute	Value
vCPUs	4
Physical cores	2
Threads per core	2
Architecture	x86_64
Processor	Intel Xeon Platinum 8259 (Cascade Lake)
CPU maker	Intel
Clock speed	3.1 GHz
Sustained clock	3.1 GHz
Processor features	Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo
Burstable	No

Memory	Value
Memory (GiB)	32

Networking	Value
Network	Up to 10 Gbps
Network baseline	1.25 Gbps
Network peak	10 Gbps
Enhanced networking	Yes (ENA)
EFA	No
IPv6	Yes
Max network interfaces	4
IPv4 addresses per interface	15

Storage	Value
Storage	EBS only
EBS optimized	Yes
EBS over NVMe	Required
EBS throughput	Up to 10 Gbps
EBS baseline bandwidth	2,500 Mbps
EBS max bandwidth	10,000 Mbps
EBS baseline throughput	312.5 MB/s
EBS max throughput	1,250 MB/s
EBS baseline IOPS	10,833
EBS max IOPS	43,333
Max EBS volumes	27

Instance details	Value
Instance type	r5b.xlarge
Family	r5b
Category	Memory optimized
Current generation	Yes
Normalization factor	8
Bare metal	No
Hypervisor	Nitro
Placement groups	Cluster, Partition, Spread
Hibernation	No
Nitro Enclaves	Yes
Boot modes	Legacy BIOS, UEFI

Compare r5b.xlarge

With or without local disk and networking

vs r5.xlarge

Other generations

vs r8ib.xlarge

Other r5b sizes

Size	vCPUs	Memory (GiB)	On-demand /hr
r5b.large	2	16	$0.149
r5b.xlarge	4	32	$0.298
r5b.2xlarge	8	64	$0.596
r5b.4xlarge	16	128	$1.192
r5b.8xlarge	32	256	$2.384
r5b.12xlarge	48	384	$3.576
r5b.16xlarge	64	512	$4.768
r5b.24xlarge	96	768	$7.152
r5b.metal	96	768	$7.152

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