r8i-flex.4xlarge
Part of the R8I-FLEX 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.88th Generation8 = 8th GenerationAWS 8th generation hardware platform with updated CPU/system architecture.iIntel Xeon Scalablei = Intel Xeon ScalableIntel Xeon Scalable (Granite Rapids) (x86_64). Powered by Intel Xeon Scalable x86_64 processors with Intel Advanced Vector Extensions (AVX-512 / AMX) acceleration.flexFlex Instanceflex = Flex InstanceFlex instances offer up to 19% better price-to-performance for workloads that do not continuously utilize full compute capacity.4xlarge4 Extra Large4xlarge = 4 Extra Large16 vCPUs • 128 GB RAM • EBS only • Up to 15 Gbps NetworkPrice (Linux)
$1.0558/ hr
~$770.70/mo
Compute
16vCPUs
8 cores • x86_64
Memory
128GB
8.0 GB / vCPU
Value
$0.0660/ vCPU-hr
$0.0082/GB-hr
Network
Up to 15 Gbps
Baseline: 3.75 Gbps
Storage & EBS
1,250MB/s
Max: 40,000 IOPS
Technical Specifications & Limits
Hardware specs, container thresholds, and system limitsCompute & Processor
ProcessorIntel Xeon Scalable (Granite Rapids)
Architecturex86_64 (x86_64)
vCPUs / Threads16 vCPUs
Physical Cores8
Clock Speed3.9 GHz
Intel AVX / AVX2AVX & AVX2 Supported
Intel Turbo BoostYes
Bare MetalNo (Virtualized)
Performance & Benchmarks
CoreMark Score374,036
CoreMark / vCPU23,377.2 / core
FFmpeg Transcoding144 FPS
CoreMark per Dollar354,281 score / $
Cost per vCPU-hr$0.0660
Cost per GB-hr$0.0082
Containers & Kubernetes
EKS Max Pods394 pods
Max ECS Tasks40 tasks
Max ENIs8
IPv4/v6 per ENI50
Total Addressable IPs400 total IPs
CNI Prefix DelegationSupported (High Density)
Networking & Bandwidth
Network PerformanceUp to 15 Gbps
Baseline Bandwidth3.75 Gbps
Burst / Peak Bandwidth15 Gbps
Enhanced NetworkingYes
EFA SupportNo
IPv6 SupportNative Dual-Stack Supported
Storage & EBS Optimization
Storage ConfigurationEBS only
Local NVMe DiskNone (EBS only)
EBS Baseline Throughput312.5 MB/s
EBS Max Throughput1250 MB/s
EBS Baseline IOPS12,000
EBS Max / Burst IOPS40,000
Dedicated EBS ThroughputUp to 10000 Mbps
Platform & Architecture Details
Hypervisor / SystemAWS Nitro System (PCIe Offload)
Nitro EnclavesNot Supported
Normalization Factor32
Generation StatusCurrent Generation (Recommended)
Date Introduced2025-08-19
Regional Pricing Matrix
Live on-demand rates across all global AWS cloud regionsLowest Price Region
$1.0558/ hr
US East (N. Virginia) (us-east-1)Highest Price Region
$1.6842/ hr
South America (Sao Paulo) (sa-east-1)Global Fleet Average
$1.2271/ hr
Across all active regionsRegional Coverage
27regions
Available worldwide| Region | On-Demand Price |
|---|---|
af-south-1 Africa (Cape Town) | $1.4077 |
ap-south-2 Asia Pacific (Hyderabad) | $1.0893 |
ap-southeast-5 Asia Pacific (Malaysia) | $1.0826 |
ap-south-1 Asia Pacific (Mumbai) | $1.0893 |
ap-southeast-6 Asia Pacific (New Zealand) | $1.3285 |
ap-northeast-2 Asia Pacific (Seoul) | $1.2736 |
ap-southeast-1 Asia Pacific (Singapore) | $1.2736 |
ap-southeast-2 Asia Pacific (Sydney) | $1.2653 |
ap-northeast-1 Asia Pacific (Tokyo) | $1.2736 |
us-gov-east-1 AWS GovCloud (US-East) | $1.2653 |
us-gov-west-1 AWS GovCloud (US-West) | $1.2653 |
ca-central-1 Canada (Central) | $1.1563 |
ca-west-1 Canada West (Calgary) | $1.1563 |
eu-central-1 EU (Frankfurt) | $1.2736 |
eu-west-1 EU (Ireland) | $1.1814 |
eu-west-2 EU (London) | $1.2401 |
eu-south-1 EU (Milan) | $1.2401 |
eu-west-3 EU (Paris) | $1.2401 |
eu-north-1 EU (Stockholm) | $1.1228 |
eu-south-2 Europe (Spain) | $1.1814 |
eu-central-2 Europe (Zurich) | $1.4010 |
me-central-1 Middle East (UAE) | $1.2996 |
sa-east-1 HighestSouth America (Sao Paulo) | $1.6842 |
us-east-1 LowestUS East (N. Virginia) | $1.0558 |
us-east-2 LowestUS East (Ohio) | $1.0558 |
us-west-1 US West (N. California) | $1.1730 |
us-west-2 LowestUS West (Oregon) | $1.0558 |
| Region | On-Demand Price |
|---|---|
af-south-1 Africa (Cape Town) | $2.1069 |
ap-south-2 Asia Pacific (Hyderabad) | $1.7885 |
ap-southeast-5 Asia Pacific (Malaysia) | $1.7818 |
ap-south-1 Asia Pacific (Mumbai) | $1.7885 |
ap-southeast-6 Asia Pacific (New Zealand) | $2.0277 |
ap-northeast-2 Asia Pacific (Seoul) | $1.9728 |
ap-southeast-1 Asia Pacific (Singapore) | $1.9728 |
ap-southeast-2 Asia Pacific (Sydney) | $1.9645 |
ap-northeast-1 Asia Pacific (Tokyo) | $1.9728 |
us-gov-east-1 AWS GovCloud (US-East) | $1.9645 |
us-gov-west-1 AWS GovCloud (US-West) | $1.9645 |
ca-central-1 Canada (Central) | $1.8555 |
ca-west-1 Canada West (Calgary) | $1.8555 |
eu-central-1 EU (Frankfurt) | $1.9728 |
eu-west-1 EU (Ireland) | $1.8806 |
eu-west-2 EU (London) | $1.9393 |
eu-south-1 EU (Milan) | $1.9393 |
eu-west-3 EU (Paris) | $1.9393 |
eu-north-1 EU (Stockholm) | $1.8220 |
eu-south-2 Europe (Spain) | $1.8806 |
eu-central-2 Europe (Zurich) | $2.1002 |
me-central-1 Middle East (UAE) | $1.9988 |
sa-east-1 HighestSouth America (Sao Paulo) | $2.3834 |
us-east-1 LowestUS East (N. Virginia) | $1.7550 |
us-east-2 LowestUS East (Ohio) | $1.7550 |
us-west-1 US West (N. California) | $1.8722 |
us-west-2 LowestUS West (Oregon) | $1.7550 |
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