AWS Amazon EC2

r6a.4xlarge

Part of the R6A Memory Optimized family — High memory-to-vCPU ratio for memory-intensive applications.

Name:rMemory Optimized66th GenerationaAMD EPYC4xlarge4 Extra Large

On-demand, Linux

$0.5720/ hr

~$417.56/mo · lowest in Asia Pacific (Hyderabad), ap-south-2

Savings Plan, Linux

$0.29696/ hr

From, with a 3-year Compute Savings Plan, No Upfront: −48% vs on-demand rate (ap-south-2)

Per unit

$0.0357/ vCPU-hr

$0.0045/GB-hr

Compute

16vCPUs

8 cores • x86_64

Memory

128GB

8.0 GB / vCPU

Network

Up to 12.5 Gbps

Baseline: 6.25 Gbps

Storage & EBS

1,250MB/s

Max: 40,000 IOPS

Alternatives to r6a.4xlarge

Option	Price vs r6a.4xlarge	Why look at it
r6i.4xlarge Compare →	+11%+$0.101/hr Linux on-demand, us-east-1	Intel (x86_64), same vCPU and RAM
r6g.4xlarge Compare →	-11%-$0.101/hr Linux on-demand, us-east-1	Graviton (arm64), same vCPU and RAM

On Google Cloud

The nearest Google Cloud machines to r6a.4xlarge by vCPU and memory, at On-demand Linux rates in Northern Virginia (us-east-1 ↔ us-east4).

Machine	Size	On-demand Linux	vs r6a.4xlarge
r6a.4xlargeThis page · AWS, us-east-1	16 vCPU · 128 GiB	$0.9072/hr	—
n4d-highmem-16same 16 vCPU and 128 GiB; AMD on both	16 vCPU · 128 GiB	$0.88944/hr	2.0% less
c3d-highmem-16same 16 vCPU and 128 GiB; AMD on both	16 vCPU · 128 GiB	$0.97976/hr	8.0% more
n2d-highmem-16same 16 vCPU and 128 GiB; AMD on both	16 vCPU · 128 GiB	$1.026944/hr	13% more

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

ProcessorAMD EPYC 7R13 Processor

Architecturex86_64 (x86_64)

vCPUs / Threads16 vCPUs

Physical Cores8

Clock Speed3.6 GHz

Intel AVX / AVX2No

Intel Turbo BoostNo

Bare MetalNo (Virtualized)

Performance & Benchmarks

CoreMark Score348,337

CoreMark / vCPU21,771.1 / core

FFmpeg Transcoding122 FPS

CoreMark per Dollar608,981 score / $

Cost per vCPU-hr$0.0357

Cost per GB-hr$0.0045

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 PerformanceUp to 12.5 Gbps

Baseline Bandwidth6.25 Gbps

Burst / Peak Bandwidth12.5 Gbps

Enhanced NetworkingYes

EFA SupportNo

IPv6 SupportNative Dual-Stack Supported

Storage & EBS Optimization

Storage ConfigurationEBS only

Local NVMe DiskNone (EBS only)

EBS Baseline Throughput625 MB/s

EBS Max Throughput1250 MB/s

EBS Baseline IOPS20,000

EBS Max / Burst IOPS40,000

Dedicated EBS ThroughputUp to 6667 Mbps

Platform & Architecture Details

Hypervisor / SystemAWS Nitro System (PCIe Offload)

Nitro EnclavesSupported (Isolated security enclaves)

Normalization Factor32

Generation StatusCurrent Generation (Recommended)

Rates by region

Live on-demand rates across all global AWS cloud regions

Lowest Price Region

$0.5720/ hr

Asia Pacific (Mumbai) (ap-south-1)

Highest Price Region

$1.0944/ hr

Asia Pacific (Tokyo) (ap-northeast-1)

Global Fleet Average

$0.9476/ hr

Across all active regions

Regional Coverage

13regions

Available worldwide

Linux — Available in all 13 regions
Region	On-Demand Price	% vs On-Demand Rate
ap-south-2 Asia Pacific (Hyderabad) Lowest	$0.5720
ap-south-1 Asia Pacific (Mumbai) Lowest	$0.5720
ap-southeast-1 Asia Pacific (Singapore) Highest	$1.0944
ap-southeast-2 Asia Pacific (Sydney)	$1.0872
ap-northeast-1 Asia Pacific (Tokyo) Highest	$1.0944
ca-central-1 Canada (Central)	$0.9936
eu-central-1 EU (Frankfurt) Highest	$1.0944
eu-west-1 EU (Ireland)	$1.0152
eu-west-2 EU (London)	$1.0656
us-east-1 US East (N. Virginia)	$0.9072
us-east-2 US East (Ohio)	$0.9072
us-west-1 US West (N. California)	$1.0080
us-west-2 US West (Oregon)	$0.9072

Windows — Available in all 13 regions
Region	On-Demand Price	% vs On-Demand Rate
ap-south-2 Asia Pacific (Hyderabad) Lowest	$1.3080
ap-south-1 Asia Pacific (Mumbai) Lowest	$1.3080
ap-southeast-1 Asia Pacific (Singapore) Highest	$1.8304
ap-southeast-2 Asia Pacific (Sydney)	$1.8232
ap-northeast-1 Asia Pacific (Tokyo) Highest	$1.8304
ca-central-1 Canada (Central)	$1.7296
eu-central-1 EU (Frankfurt) Highest	$1.8304
eu-west-1 EU (Ireland)	$1.7512
eu-west-2 EU (London)	$1.8016
us-east-1 US East (N. Virginia)	$1.6432
us-east-2 US East (Ohio)	$1.6432
us-west-1 US West (N. California)	$1.7440
us-west-2 US West (Oregon)	$1.6432

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 Asia Pacific (Hyderabad) (ap-south-2), the 3-year Compute Savings Plan rate (No Upfront) for r6a.4xlarge on Linux is 52% of the on-demand rate, so the instance has to run at least 52% 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.