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r6a.4xlarge

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

Name:rMemory Optimizedr = Memory OptimizedHigh memory-to-vCPU ratio designed for memory-intensive applications such as databases, distributed caches, and in-memory analytics.66th Generation6 = 6th GenerationAWS 6th generation hardware platform with updated CPU/system architecture.aAMD EPYCa = AMD EPYCAMD EPYC 7R13 Processor (x86_64). Powered by AMD EPYC x86_64 processors, delivering high core counts and cost-effective compute performance.4xlarge4 Extra Large4xlarge = 4 Extra Large16 vCPUs • 128 GB RAM • EBS only • Up to 12.5 Gbps Network
Price (Linux)
$0.5720/ hr
~$417.56/mo
Compute
16vCPUs
8 cores • x86_64
Memory
128GB
8.0 GB / vCPU
Value
$0.0357/ vCPU-hr
$0.0045/GB-hr
Network
Up to 12.5 Gbps
Baseline: 6.25 Gbps
Storage & EBS
1,250MB/s
Max: 40,000 IOPS

Alternatives to r6a.4xlarge

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

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 ECS Tasks60 tasks
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)
Date Introduced2022-07-19

Regional Pricing Matrix

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
RegionOn-Demand Price
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