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r8i-flex.16xlarge

Data updated at: October 24, 2025 at 12:40 AM UTC

Amazon EC2 instance r8i-flex.16xlarge with 64 vCPUs, 512 GiB RAM . Available in 7 regions starting from $3082.82 per month.
Instance Typer8i-flex.16xlarge
Instance FamilyMemory optimized
DetailsHigh-performance databases, data mining/analysis, in-memory databases, distributed large-scale caches, real-time processing apps for unstructured big data, Hadoop/Spark clusters, and other enterprise apps.

r – RAM / memory optimized
8 – Generation
i – Intel processor
flex – Flex instance
16xlarge – Size
vCPUs64
Memory512 GiB
CPU Architecturex86_64
ProcessorIntel Xeon Scalable (Granite Rapids)
Clock Speed3.9 GHz
Threads Per Core2
Accelerators
GPUno
Inference Acceleratorno
FPGAno
Instances
Sizesr8i-flex.large, r8i-flex.xlarge, r8i-flex.2xlarge, r8i-flex.4xlarge, r8i-flex.8xlarge, r8i-flex.12xlarge, r8i-flex.16xlarge
Variantsr8g.16xlarge, r8gb.16xlarge, r8gd.16xlarge, r8gn.16xlarge, r8i.16xlarge
Free Tierno
Burstableno
Hibernationno
Instance StorageEBS only
EBS (Elastic Block Store)
EBS Optimizeddefault
Encryptionsupported
NVMerequired
Dedicated Throughputup to 20000 MBps
Optimized Baseline Bandwidth10000 Mbps
Optimized Baseline Throughput1250 Mbps
Optimized Baseline Performance40000 IOPS
Optimized Max Performance80000 IOPS
Optimized Max Bandwidth20000 Mbps
Optimized Max Throughput2500 Mbps
Networking
Networking PerformanceUp to 30000 Megabit
Enhanced Networkingyes
Max Interfaces16
Max Cards1
IPv4 Addresses per Interface64
IPv6 Addresses per Interface64
IPv6 Supportyes
ENA Supportrequired
EFA Supportno
Encryption in Transit Supportyes
ENA SRD Supportno

Regional Availability

US
GovCloud (US-East) / us-gov-east-1
GovCloud (US-West) / us-gov-west-1
US East (Ohio) / us-east-2
US East (Virginia) / us-east-1
US West (N. California) / us-west-1
US West (Oregon) / us-west-2
Central America
Mexico (Central) / mx-central-1
Canada
Canada (Central) / ca-central-1
Canada West (Calgary) / ca-west-1
Europe
Europe (Ireland) / eu-west-1
Europe (London) / eu-west-2
Europe (Frankfurt) / eu-central-1
Europe (Milan) / eu-south-1
Europe (Paris) / eu-west-3
Europe (Spain) / eu-south-2
Europe (Stockholm) / eu-north-1
Europe (Zurich) / eu-central-2
Africa
Africa (Cape Town) / af-south-1
South America
South America (São Paulo) / sa-east-1
Asia Pacific
Asia Pacific (Hong Kong) / ap-east-1
Asia Pacific (Hyderabad) / ap-south-2
Asia Pacific (Jakarta) / ap-southeast-3
Asia Pacific (Malaysia) / ap-southeast-5
Asia Pacific (Melbourne) / ap-southeast-4
Asia Pacific (Mumbai) / ap-south-1
Asia Pacific (New Zealand) / ap-southeast-6
Asia Pacific (Osaka) / ap-northeast-3
Asia Pacific (Seoul) / ap-northeast-2
Asia Pacific (Singapore) / ap-southeast-1
Asia Pacific (Sydney) / ap-southeast-2
Asia Pacific (Taipei) / ap-east-2
Asia Pacific (Thailand) / ap-southeast-7
Asia Pacific (Tokyo) / ap-northeast-1
Middle East
Israel (Tel Aviv) / il-central-1
Middle East (Bahrain) / me-south-1
Middle East (UAE) / me-central-1

Regional Prices

Geography
Region Name
Region
Savings Options
Instance Price
USUS East (Virginia)us-east-1compare4.2230
USUS East (Ohio)us-east-2compare4.2230
USUS West (Oregon)us-west-2compare4.2230
HiddenHiddenhidden-1compare4.3302
HiddenHiddenhidden-2compare4.7258
HiddenHiddenhidden-3compare5.0944
HiddenHiddenhidden-4compare5.0944
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