r8g.12xlarge by Amazon Web Services

r8g.12xlarge is a Memory optimized [AWS Graviton processors] Gen8 12xlarge server offered by Amazon Web Services with 48 vCPUs, 384 GiB of memory and 0 GB of storage. The pricing starts at 0.2846 USD per hour.
48 vCPU
384 GiB Memory
Spare SCore
81,875
(All-cores)
1,707
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
r8g.12xlarge
Description
Memory optimized [AWS Graviton processors] Gen8 12xlarge
Family
r8g
Hw Virt
Status
active
Observed At
2026-09-17T06:36:58.079524

Availability

REGION / IDSPOTONDEMAND
Hyderabad (IN) / ap-south-2
0.358233 USD/h 1.9819 USD/h
Mumbai (IN) / ap-south-1
0.7379 USD/h 1.9819 USD/h
Ohio (US) / us-east-2
0.9257 USD/h 2.8277 USD/h
Northern Virgina (US) / us-east-1
1.07746 USD/h 2.8277 USD/h
Oregon (US) / us-west-2
1.4487 USD/h 2.8277 USD/h
(TH) / ap-southeast-7
0.873767 USD/h 2.8992 USD/h
(MY) / ap-southeast-5
0.976433 USD/h 2.8992 USD/h
(MX) / mx-central-1
0.8879 USD/h 2.9688 USD/h
Stockholm (SE) / eu-north-1
0.519533 USD/h 3.007 USD/h
Calgary (CA) / ca-west-1
0.47155 USD/h 3.097 USD/h
Quebec (CA) / ca-central-1
0.816467 USD/h 3.097 USD/h
California (US) / us-west-1
1.12775 USD/h 3.1416 USD/h
Aragón (ES) / eu-south-2
0.422867 USD/h 3.1627 USD/h
Dublin (IE) / eu-west-1
1.4447 USD/h 3.1642 USD/h
Milan (IT) / eu-south-1
0.4934 USD/h 3.3134 USD/h
London (GB) / eu-west-2
0.767275 USD/h 3.3211 USD/h
Paris (FR) / eu-west-3
0.9528 USD/h 3.3211 USD/h
Melbourne (AU) / ap-southeast-4
0.7124 USD/h 3.3888 USD/h
Sydney (AU) / ap-southeast-2
1.215967 USD/h 3.3888 USD/h
Jakarta (ID) / ap-southeast-3
0.398167 USD/h 3.4109 USD/h
Seoul (KR) / ap-northeast-2
0.957167 USD/h 3.4109 USD/h
Osaka (JP) / ap-northeast-3
1.0052 USD/h 3.4109 USD/h
Tokyo (JP) / ap-northeast-1
1.6086 USD/h 3.4109 USD/h
Frankfurt (DE) / eu-central-1
1.227433 USD/h 3.4109 USD/h
Singapore (SG) / ap-southeast-1
1.643467 USD/h 3.4109 USD/h
United Arab Emirates / me-central-1
1.4248 USD/h 3.4805 USD/h
(NZ) / ap-southeast-6
0.6983 USD/h 3.5582 USD/h
Hong Kong (HK) / ap-east-1
0.562233 USD/h 3.7488 USD/h
Zurich (CH) / eu-central-2
0.508833 USD/h 3.7522 USD/h
Cape Town (ZA) / af-south-1
1.134167 USD/h 3.7699 USD/h
Sao Paulo (BR) / sa-east-1
1.1304 USD/h 4.4995 USD/h

Processor

vCPUs
48
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
48
CPU Speed
2.8 GHz
CPU Architecture
arm64
CPU Manufacturer
AWS
CPU Model
Neoverse-V2
CPU L1D Cache
64 KiB
CPU L1D Cache Total
3 MiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
3 MiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
96 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, ssbs, sb, paca, pacg, dcpodp, sve2, sveaes, svepmull, svebitperm, svesha3, flagm2, frint, svei8mm, svebf16, i8mm, bf16, dgh, rng, bti
Ecpus
48
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
384 GiB
Memory Amount Actual
378 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
      22.5 Gbps
      Network Speed Max
      22.5 Gbps
      Network Storage Speed Baseline
      15 Gbps
      Network Storage Speed Max
      15 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-density, memory-optimized Arm64 instance delivering exceptional memory bandwidth and dedicated multi-core processing for demanding database and caching workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services r8g.12xlarge is a memory-optimized instance powered by 48 dedicated physical cores of the Arm64 AWS Graviton Neoverse-V2 processor running at 2.8 GHz. It features 384.0 GB of RAM, providing a high memory-to-core ratio of 8.0 GB per core, with a baseline network bandwidth of 22 Gbps and no local storage or GPU hardware. The instance delivers top-tier memory bandwidth, reaching 404.36 GB/sec for large-block reads, alongside strong multi-core CPU performance. It excels in memory-intensive tasks, database operations, and high-throughput static web serving, processing 100.01 million Redis SET operations per second. The r8g.12xlarge represents a highly resource-dense option for enterprise workloads, offering an efficient balance of memory capacity and multi-core processing power without the overhead of hyperthreading.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.93Score
      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) 10,955,302 ops/sec 1,919,696 ops/sec 5.71 50.00% 50.00% +139.00%
      Redis RPS (pipeline=16, SET) 63,204,553 ops/sec 11,736,081 ops/sec 5.39 20.00% 20.00% +40.10%
      PassMark Memory Mark (composite) 3,393 2,418 1.4 10.00% 10.00% +3.42%
      Memory bandwidth (read, 16 MB ~ L3) 465,660 MB/sec 108,260 MB/sec 4.3 10.00% 10.00% +15.70%
      PassMark single-thread CPU 1,944 Mops/s 2,365 Mops/s 0.822 10.00% 10.00% -1.94%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,894

      Geekbench Multi-Core

      Score: 23,531

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 36110
      Compression
      		 319310
      Encryption
      		 9061
      Extended Instructions
      		 44239
      Floating Point Maths
      		 290878
      Integer Maths
      		 250406
      Physics
      		 13016
      Prime Numbers
      		 573
      Single Threaded
      		 1944
      String Sorting
      		 220848

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 3393
      Database Operations
      		 47286
      Memory Latency
      		 47
      Memory Read Cached
      		 21181
      Memory Read Uncached
      		 20246
      Memory Write
      		 21291

      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
      r8g.medium 18 GiB0
      r8g.large 216 GiB0
      r8g.xlarge 432 GiB0
      r8g.2xlarge 864 GiB0
      r8g.4xlarge 16128 GiB0
      r8g.8xlarge 32256 GiB0
      r8g.16xlarge 64512 GiB0

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      r8g.12xlarge FAQs