x8g.12xlarge by Amazon Web Services

x8g.12xlarge is a Memory intensive [AWS Graviton processors] Gen8 12xlarge server offered by Amazon Web Services with 48 vCPUs, 768 GiB of memory and 0 GB of storage. The pricing starts at 0.5339 USD per hour.
48 vCPU
768 GiB Memory
Spare SCore
81,893
(All-cores)
1,707
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
x8g.12xlarge
Description
Memory intensive [AWS Graviton processors] Gen8 12xlarge
Family
x8g
Hw Virt
Status
active
Observed At
2026-09-06T03:36:42.396083

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
1.108433 USD/h 4.6896 USD/h
Northern Virgina (US) / us-east-1
1.764725 USD/h 4.6896 USD/h
Oregon (US) / us-west-2
2.017767 USD/h 4.6896 USD/h
Stockholm (SE) / eu-north-1
0.5339 USD/h 5.339 USD/h
Dublin (IE) / eu-west-1
1.513067 USD/h 5.616 USD/h
Sydney (AU) / ap-southeast-2
1.072433 USD/h 5.6275 USD/h
Frankfurt (DE) / eu-central-1
1.521533 USD/h 6.5544 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
768 GiB
Memory Amount Actual
756 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 memory-optimized ARM64 server featuring high memory density and top-tier multi-core performance for memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      Amazon Web Services x8g.12xlarge is an ARM64 memory-optimized server powered by a 48-core AWS Neoverse-V2 processor running at 2.8 GHz. Featuring 768.0 GB of RAM, it provides a high memory-to-core ratio of 16.0 GB per core. The architecture lacks hyperthreading, offering 48 dedicated physical cores with a 36 MB L3 cache. While it lacks local storage and GPU accelerators, it delivers a baseline network bandwidth of 22 Gbps. Benchmarks show top-tier performance in large-block memory bandwidth, database operations, and software compilation, alongside strong multi-core CPU execution. Conversely, single-core performance is average. This profile makes the instance highly cost-efficient for memory-intensive, parallelized workloads such as in-memory databases, caching layers, and high-throughput web serving.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.95Score
      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) 11,468,578 ops/sec 1,917,397 ops/sec 5.98 50.00% 50.00% +145.00%
      Redis RPS (pipeline=16, SET) 62,987,501 ops/sec 11,681,410 ops/sec 5.39 20.00% 20.00% +40.10%
      PassMark Memory Mark (composite) 3,165 2,418 1.31 10.00% 10.00% +2.74%
      Memory bandwidth (read, 16 MB ~ L3) 415,415 MB/sec 108,140 MB/sec 3.84 10.00% 10.00% +14.40%
      PassMark single-thread CPU 1,945 Mops/s 2,365 Mops/s 0.822 10.00% 10.00% -1.94%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,764

      Geekbench Multi-Core

      Score: 23,349

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 36110
      Compression
      		 319400
      Encryption
      		 9071
      Extended Instructions
      		 44276
      Floating Point Maths
      		 291023
      Integer Maths
      		 250492
      Physics
      		 12778
      Prime Numbers
      		 560
      Single Threaded
      		 1945
      String Sorting
      		 220464

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 3165
      Database Operations
      		 46832
      Memory Latency
      		 49
      Memory Read Cached
      		 18963
      Memory Read Uncached
      		 18211
      Memory Write
      		 21297

      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
      x8g.medium 116 GiB0
      x8g.large 232 GiB0
      x8g.xlarge 464 GiB0
      x8g.2xlarge 8128 GiB0
      x8g.4xlarge 16256 GiB0
      x8g.8xlarge 32512 GiB0
      x8g.16xlarge 641024 GiB0

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      x8g.12xlarge FAQs