c8gb.16xlarge by Amazon Web Services

c8gb.16xlarge is a Compute optimized [AWS Graviton processors] Gen8 16xlarge server offered by Amazon Web Services with 64 vCPUs, 128 GiB of memory and 0 GB of storage. The pricing starts at 0.4073 USD per hour.
64 vCPU
128 GiB Memory
Spare SCore
109,158
(All-cores)
1,706
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8gb.16xlarge
Description
Compute optimized [AWS Graviton processors] Gen8 16xlarge
Family
c8gb
Hw Virt
Status
active
Observed At
2026-10-25T13:03:52.268086

Availability

REGION / IDSPOTONDEMAND
Northern Virgina (US) / us-east-1
1.477475 USD/h 3.792 USD/h
Ohio (US) / us-east-2
1.022367 USD/h 3.792 USD/h
Oregon (US) / us-west-2
1.233975 USD/h 3.792 USD/h
Stockholm (SE) / eu-north-1
0.665267 USD/h 4.073 USD/h
Dublin (IE) / eu-west-1
1.22865 USD/h 4.2835 USD/h
Frankfurt (DE) / eu-central-1
1.057267 USD/h 4.3187 USD/h
Paris (FR) / eu-west-3
1.03015 USD/h 4.4941 USD/h
California (US) / us-west-1
0.7892 USD/h 4.7398 USD/h
Cape Town (ZA) / af-south-1
3.106467 USD/h 5.0982 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
64
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
126 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
      133.333 Gbps
      Network Speed Max
      133.333 Gbps
      Network Storage Speed Baseline
      100 Gbps
      Network Storage Speed Max
      100 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-density ARM64 compute instance delivering exceptional multi-threaded performance and top-tier memory bandwidth for demanding enterprise workloads.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c8gb.16xlarge is a compute-optimized instance featuring 64 dedicated physical cores on the ARM64 AWS Graviton Neoverse-V2 architecture. Running at 2.8 GHz on the Nitro hypervisor, it includes 128.0 GB of memory, providing 2.0 GB per core, alongside a baseline network bandwidth of 133 Gbps. This instance does not include local storage or GPU accelerators. In benchmarks, the c8gb.16xlarge demonstrates top-tier performance in memory bandwidth, multi-threaded software compilation, and database operations, processing 133.04 million Redis SET operations per second. However, single-core performance and small-model text generation are less competitive. Qualitatively, the instance offers high compute density and memory throughput, making it highly efficient for multi-threaded workloads. It is best suited for software compilation, high-throughput database operations, static web serving, and medium-to-large language model text generation.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      4.2Score
      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) 12,457,804 ops/sec 1,919,289 ops/sec 6.3 50.00% 50.00% +150.00%
      Redis RPS (pipeline=16, SET) 70,210,460 ops/sec 11,728,058 ops/sec 5.8 20.00% 20.00% +42.00%
      PassMark Memory Mark (composite) 3,415 2,416 1.4 10.00% 10.00% +3.40%
      Memory bandwidth (read, 16 MB ~ L3) 534,067 MB/sec 108,466 MB/sec 4.8 10.00% 10.00% +17.00%
      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: 1,890

      Geekbench Multi-Core

      Score: 25,948

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 44,154
      Compression
      		 425,306
      Encryption
      		 12,132
      Extended Instructions
      		 56,254
      Floating Point Maths
      		 387,679
      Integer Maths
      		 333,535
      Physics
      		 16,339
      Prime Numbers
      		 685
      Single Threaded
      		 1,942
      String Sorting
      		 291,809

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 3,415
      Database Operations
      		 47,514
      Memory Latency
      		 46
      Memory Read Cached
      		 21,184
      Memory Read Uncached
      		 19,999
      Memory Write
      		 21,219

      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.12xlarge 4896 GiB0

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      c8gb.16xlarge FAQs