r8a.4xlarge

r8a.4xlarge is an AWS EC2 instance with 16 vCPUs, 128 GiB memory (AMD EPYC 9R45 Processor). In US East (N. Virginia) it costs $1.278 per hour on demand ($933.01 per month) for Linux. Spot capacity is about $0.3356 per hour. It is sold in 9 regions.

Prices by region

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

Region	On-demand	Spot	1-yr savings plan	3-yr savings plan
US East (N. Virginia) us-east-1	$1.278	$0.3356	$0.926	$0.6667
US East (Ohio) us-east-2	$1.278	$0.3286	$0.926	$0.6667
US West (Oregon) us-west-2	$1.278	$0.3219	$0.926	$0.6667
Asia Pacific (Taipei) ap-east-2	$1.388	–	$1.005	$0.7238
Canada (Central) ca-central-1	$1.40	$0.4003	$1.012	$0.7269
Europe (Spain) eu-south-2	$1.43	$0.1553	$1.036	$0.746
EU (Ireland) eu-west-1	$1.43	$0.6497	$1.036	$0.746
Asia Pacific (Tokyo) ap-northeast-1	$1.542	$0.4777	$1.117	$0.8042
EU (Frankfurt) eu-central-1	$1.542	$0.5159	$1.117	$0.8042

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	$1.278	–	–
Ubuntu Pro	$1.306	–	–
SUSE	$1.403	–	–
RHEL	$1.451	–	–
Linux SQL Web	$1.548	–	–
RHEL HA	$1.675	–	–
RHEL SQL Web	$1.721	–	–
Windows	$2.014	–	–
Windows SQL Web	$2.284	–	–
Linux SQL Std	$3.198	–	–
RHEL SQL Std	$3.371	–	–
RHEL HA SQL Std	$3.595	–	–
Windows SQL Std	$3.934	–	–
Linux SQL Ent	$7.278	–	–
RHEL SQL Ent	$7.451	–	–
RHEL HA SQL Ent	$7.675	–	–
Windows SQL Ent	$8.014	–	–

Specs

Compute	Value
vCPUs	16
Physical cores	16
Threads per core	1
Architecture	x86_64
Processor	AMD EPYC 9R45 Processor
CPU maker	AMD
Clock speed	Up to 4.5 GHz
Sustained clock	4.5 GHz
Processor features	AMD Turbo; AVX; AVX2; AVX512
Burstable	No

Memory	Value
Memory (GiB)	128

Networking	Value
Network	Up to 15 Gbps
Network baseline	7.5 Gbps
Network peak	15 Gbps
Enhanced networking	Yes (ENA)
EFA	No
IPv6	Yes
Max network interfaces	8
IPv4 addresses per interface	40

Storage	Value
Storage	EBS only
EBS optimized	Yes
EBS over NVMe	Required
EBS throughput	Up to 10000 Mbps
EBS baseline bandwidth	5,000 Mbps
EBS max bandwidth	10,000 Mbps
EBS baseline throughput	625 MB/s
EBS max throughput	1,250 MB/s
EBS baseline IOPS	20,000
EBS max IOPS	40,000
Max EBS volumes	32

Instance details	Value
Instance type	r8a.4xlarge
Family	r8a
Category	Memory optimized
Current generation	Yes
Normalization factor	32
Bare metal	No
Hypervisor	Nitro
Placement groups	Cluster, Partition, Spread
Hibernation	Yes
Nitro Enclaves	Yes
Boot modes	Legacy BIOS, UEFI

Compare r8a.4xlarge

Other processors

vs r8g.4xlarge vs r8i.4xlarge

Compute and memory optimized

vs c8a.4xlarge vs m8a.4xlarge

Other generations

vs r7a.4xlarge

Other r8a sizes

Size	vCPUs	Memory (GiB)	On-demand /hr
r8a.medium	1	8	$0.0799
r8a.large	2	16	$0.1598
r8a.xlarge	4	32	$0.3195
r8a.2xlarge	8	64	$0.639
r8a.4xlarge	16	128	$1.278
r8a.8xlarge	32	256	$2.556
r8a.12xlarge	48	384	$3.834
r8a.16xlarge	64	512	$5.112
r8a.24xlarge	96	768	$7.668
r8a.metal-24xl	96	768	$7.668
r8a.48xlarge	192	1536	$15.337
r8a.metal-48xl	192	1536	$15.337

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