c8gb.12xlarge by Amazon Web Services

c8gb.12xlarge is a Compute optimized [AWS Graviton processors] Gen8 12xlarge server offered by Amazon Web Services with 48 vCPUs, 96 GiB of memory and 0 GB of storage. The pricing starts at 0.3482 USD per hour.
48 vCPU
96 GiB Memory
Spare SCore
81,854
(All-cores)
1,707
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8gb.12xlarge
Description
Compute optimized [AWS Graviton processors] Gen8 12xlarge
Family
c8gb
Hw Virt
Status
active
Observed At
2026-10-25T20:43:55.018549

Availability

REGION / IDSPOTONDEMAND
Ohio (US) / us-east-2
0.808367 USD/h 2.844 USD/h
Oregon (US) / us-west-2
0.965375 USD/h 2.844 USD/h
Northern Virgina (US) / us-east-1
1.76685 USD/h 2.844 USD/h
Stockholm (SE) / eu-north-1
0.620567 USD/h 3.0547 USD/h
Dublin (IE) / eu-west-1
1.03655 USD/h 3.2126 USD/h
Frankfurt (DE) / eu-central-1
1.205367 USD/h 3.239 USD/h
Paris (FR) / eu-west-3
1.8272 USD/h 3.3706 USD/h
California (US) / us-west-1
0.539 USD/h 3.5549 USD/h
Cape Town (ZA) / af-south-1
1.356067 USD/h 3.8237 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 Family
ARMv9
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, 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
96 GiB
Memory Amount Actual
95 GiB
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      100 Gbps
      Network Speed Max
      100 Gbps
      Network Storage Speed Baseline
      75 Gbps
      Network Storage Speed Max
      75 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A dedicated ARM64 compute-optimized instance delivering high memory bandwidth and exceptional multi-threaded performance for high-throughput network workloads.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c8gb.12xlarge is a compute-optimized, ARM64-based server powered by 48 dedicated AWS Graviton Neoverse-V2 physical cores running at 2.8 GHz. It features 96.0 GB of system memory, yielding a 2.0 GB per core ratio, and runs on the AWS Nitro hypervisor. The instance lacks local storage and GPU accelerators but provides a 100 Gbps baseline network bandwidth. Benchmark results indicate top-tier performance in memory bandwidth, multi-core software compilation, and static web serving throughput, alongside strong multi-threaded decompression and database operations. Conversely, single-core compute and text generation for small LLMs represent moderate to weaker performance areas. This server is designed for multi-threaded workloads, software development pipelines, high-throughput web serving, and containerized microservices.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      3.5Score
      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) 9,501,120 ops/sec 1,919,289 ops/sec 5 50.00% 50.00% +120.00%
      Redis RPS (pipeline=16, SET) 53,975,767 ops/sec 11,728,058 ops/sec 4.5 20.00% 20.00% +35.00%
      PassMark Memory Mark (composite) 3,420 2,416 1.4 10.00% 10.00% +3.40%
      Memory bandwidth (read, 16 MB ~ L3) 467,021 MB/sec 108,466 MB/sec 4.3 10.00% 10.00% +16.00%
      PassMark single-thread CPU 1,942 Mops/s 2,365 Mops/s 0.79 10.00% 10.00% -2.30%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,896

      Geekbench Multi-Core

      Score: 23,775

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 36,133
      Compression
      		 318,966
      Encryption
      		 9,101
      Extended Instructions
      		 44,092
      Floating Point Maths
      		 290,933
      Integer Maths
      		 250,263
      Physics
      		 13,170
      Prime Numbers
      		 574
      Single Threaded
      		 1,942
      String Sorting
      		 220,031

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 3,420
      Database Operations
      		 47,511
      Memory Latency
      		 45
      Memory Read Cached
      		 21,155
      Memory Read Uncached
      		 19,991
      Memory Write
      		 21,291

      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

      INSTANCEvCPUsMEMORYAccelerators
      c8gb.medium 12 GiB0
      c8gb.large 24 GiB0
      c8gb.xlarge 48 GiB0
      c8gb.2xlarge 816 GiB0
      c8gb.4xlarge 1632 GiB0
      c8gb.8xlarge 3264 GiB0
      c8gb.16xlarge 64128 GiB0

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      c8gb.12xlarge FAQs