r8gn.16xlarge by Amazon Web Services

r8gn.16xlarge is a Memory optimized [AWS Graviton processors] [Network and EBS optimized] Gen8 16xlarge server offered by Amazon Web Services with 64 vCPUs, 512 GiB of memory and 0 GB of storage. The pricing starts at 1.6575 USD per hour.
64 vCPU
512 GiB Memory
Spare SCore
109,077
(All-cores)
1,706
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8gn.16xlarge
Description
Memory optimized [AWS Graviton processors] [Network and EBS optimized] Gen8 16xlarge
Family
r8gn
Hw Virt
Status
active
Observed At
2026-09-20T13:00:19.743416

Availability

REGION / IDSPOTONDEMAND
Oregon (US) / us-west-2
1.7428 USD/h 5.8298 USD/h
Northern Virgina (US) / us-east-1
2.43875 USD/h 5.8298 USD/h

Processor

vCPUs
64
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
64
CPU Speed
2.8 GHz
CPU Architecture
arm64
CPU Manufacturer
AWS
CPU Family
ARMv9
CPU Model
Neoverse-V2
CPU L1D Cache
64 KiB
CPU L1D Cache Total
4 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
4 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
128 MiB
CPU L3 Cache
36 MiB
CPU L3 Cache Total
36 MiB
CPU Flags
fp, asimd, evtstrm, aes, pmull, sha1, sha2, crc32, atomics, fphp, asimdhp, cpuid, asimdrdm, jscvt, fcma, lrcpc, dcpop, sha3, asimddp, sha512, sve, asimdfhm, dit, uscat, ilrcpc, flagm, sb, paca, pacg, dcpodp, sve2, sveaes, svepmull, svebitperm, svesha3, flagm2, frint, svei8mm, svebf16, i8mm, bf16, dgh, rng, bti
Ecpus
63.9
Scalability
99.84

System Resources and Accelerators

MEMORY
Memory Amount
512 GiB
Memory Amount Actual
504 GiB
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      200 Gbps
      Network Speed Max
      200 Gbps
      Network Storage Speed Baseline
      40 Gbps
      Network Storage Speed Max
      40 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      An arm64 memory-optimized instance delivering high memory bandwidth and 200 Gbps network performance for demanding database and caching workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r8gn.16xlarge is a memory-optimized, arm64-based server instance powered by 64 dedicated AWS Graviton ARMv9 Neoverse-V2 cores running at 2.8 GHz. Operating on the Nitro hypervisor, it features 512.0 GB of RAM, yielding 8.0 GB per core, alongside a baseline network bandwidth of 200 Gbps. The instance does not include local storage or GPU hardware. Benchmark data highlights top-tier memory bandwidth, multi-core processing, and database operations, though single-core performance remains average. A notable tradeoff is the poor text generation speed for small language models, contrasted by strong performance on larger models. Qualitatively, the instance provides high resource density and memory throughput for its hardware class. It is highly suited for memory-intensive workloads, Redis deployments, database operations, and high-throughput static web serving.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      4.5Score
      Precomputed compound score for Cache Intensive workloads. A weighted average (geometric mean) of benchmark scores compared to their medians: score = ∏ (x_i / m_i)^(w_i / Σw). The score of 1.0 represents a synthetic baseline server with the median performance of each component benchmark; 0.5 means roughly half the performance; and 2.0 means twice the performance of that reference profile. Component weights: 50% Redis RPS (pipeline=1, SET), 20% Redis RPS (pipeline=16, SET), 10% PassMark Memory Mark (composite), 10% Memory bandwidth (read, 16 MB ~ L3), 10% PassMark single-thread CPU. Rationale for component selection: In-memory key-value store workload, mixing direct Redis performance metrics with memory speed and latency benchmarks, and single-core CPU performance profiles.
      Component Score Weight Impact
      Raw Reference Normalized Target Actual
      Redis RPS (pipeline=1, SET) 13,213,085 ops/sec 1,919,696 ops/sec 6.88 50.00% 50.00% +162.00%
      Redis RPS (pipeline=16, SET) 71,123,288 ops/sec 11,736,081 ops/sec 6.06 20.00% 20.00% +43.40%
      PassMark Memory Mark (composite) 3,464 2,418 1.43 10.00% 10.00% +3.64%
      Memory bandwidth (read, 16 MB ~ L3) 552,264 MB/sec 108,260 MB/sec 5.1 10.00% 10.00% +17.70%
      PassMark single-thread CPU 1,943 Mops/s 2,365 Mops/s 0.822 10.00% 10.00% -1.94%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,891

      Geekbench Multi-Core

      Score: 25,460

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 44158
      Compression
      		 425174
      Encryption
      		 12103
      Extended Instructions
      		 56201
      Floating Point Maths
      		 387654
      Integer Maths
      		 333671
      Physics
      		 16840
      Prime Numbers
      		 695
      Single Threaded
      		 1943
      String Sorting
      		 293346

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 3464
      Database Operations
      		 48122
      Memory Latency
      		 45
      Memory Read Cached
      		 21163
      Memory Read Uncached
      		 20364
      Memory Write
      		 21293

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      LLM Inference Speed for Prompt Processing

      LLM Inference Speed for Text Generation

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      r8gn.medium 18 GiB0
      r8gn.large 216 GiB0
      r8gn.xlarge 432 GiB0
      r8gn.2xlarge 864 GiB0
      r8gn.4xlarge 16128 GiB0
      r8gn.8xlarge 32256 GiB0
      r8gn.12xlarge 48384 GiB0

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      r8gn.16xlarge FAQs