r5b.8xlarge

r5b.8xlarge is an AWS EC2 instance with 32 vCPUs, 256 GiB memory (Intel Xeon Platinum 8259 (Cascade Lake)). In US East (N. Virginia) it costs $2.384 per hour on demand ($1,740.32 per month) for Linux; a 1-year reserved instance with no upfront costs $1.502 per hour, 37% less. Spot capacity is about $0.8005 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	$2.384	$0.8005	$1.502	$0.9655	$1.727	$1.112
US East (Ohio) us-east-2	$2.384	$0.7294	$1.502	$0.9655	$1.727	$1.112
US West (Oregon) us-west-2	$2.384	$1.131	$1.502	$0.9655	$1.727	$1.112
EU (Stockholm) eu-north-1	$2.527	$0.277	$1.592	$1.024	$1.831	$1.179
Canada (Central) ca-central-1	$2.608	$0.6187	$1.646	$1.011	$1.907	$1.218
EU (Ireland) eu-west-1	$2.672	$1.092	$1.683	$1.097	$1.97	$1.261
EU (Milan) eu-south-1	$2.80	$0.4788	$1.764	$1.134	$2.029	$1.306
EU (London) eu-west-2	$2.80	$0.7259	$1.772	$1.184	$2.058	$1.322
Asia Pacific (Seoul) ap-northeast-2	$2.848	$0.9988	$1.794	$1.181	$2.084	$1.359
Asia Pacific (Singapore) ap-southeast-1	$2.848	$0.7374	$1.794	$1.175	$2.084	$1.35
EU (Frankfurt) eu-central-1	$2.848	$1.013	$1.794	$1.175	$2.084	$1.35
Asia Pacific (Tokyo) ap-northeast-1	$2.896	$0.7534	$1.825	$1.192	$2.144	$1.37
Asia Pacific (Sydney) ap-southeast-2	$2.896	$0.9346	$1.825	$1.173	$2.11	$1.351
South America (Sao Paulo) sa-east-1	$3.792	$0.5176	$2.389	$1.562	$2.801	$1.779

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	$2.384	$1.502	$0.9655
Ubuntu Pro	$2.44	–	–
SUSE	$2.509	$1.562	$1.02
RHEL	$2.73	$1.847	$1.311
Linux SQL Web	$2.925	$2.043	$1.506
RHEL HA	$3.178	$2.296	$1.759
RHEL SQL Web	$3.27	–	–
Windows	$3.856	$2.974	$2.438
Windows SQL Web	$4.397	$3.515	$2.978
Linux SQL Std	$6.224	$5.342	$4.806
RHEL SQL Std	$6.57	–	–
RHEL HA SQL Std	$7.018	–	–
Windows SQL Std	$7.696	$6.814	$6.277
Linux SQL Ent	$14.384	$13.502	$12.966
RHEL SQL Ent	$14.73	–	–
RHEL HA SQL Ent	$15.178	–	–
Windows SQL Ent	$15.856	$14.974	$14.438

Specs

Compute	Value
vCPUs	32
Physical cores	16
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)	256

Networking	Value
Network	10 Gbps
Network baseline	10 Gbps
Network peak	10 Gbps
Enhanced networking	Yes (ENA)
EFA	No
IPv6	Yes
Max network interfaces	8
IPv4 addresses per interface	30

Storage	Value
Storage	EBS only
EBS optimized	Yes
EBS over NVMe	Required
EBS throughput	5 Gbps
EBS baseline bandwidth	20,000 Mbps
EBS max bandwidth	20,000 Mbps
EBS baseline throughput	2,500 MB/s
EBS max throughput	2,500 MB/s
EBS baseline IOPS	86,667
EBS max IOPS	86,667
Max EBS volumes	27

Instance details	Value
Instance type	r5b.8xlarge
Family	r5b
Category	Memory optimized
Current generation	Yes
Normalization factor	64
Bare metal	No
Hypervisor	Nitro
Placement groups	Cluster, Partition, Spread
Hibernation	No
Nitro Enclaves	Yes
Boot modes	Legacy BIOS, UEFI

Compare r5b.8xlarge

With or without local disk and networking

vs r5.8xlarge

Other generations

vs r8ib.8xlarge

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.