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c5a.8xlarge by Amazon Web Services

c5a.8xlarge is a Compute optimized [AMD processors] Gen5 8xlarge server offered by Amazon Web Services with 32 vCPUs, 64 GiB of memory and 0 GB of storage. The pricing starts at 0.2415 USD per hour.
32 vCPU
64 GiB Memory
Spare SCore
12262
(All-cores)
765
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c5a.8xlarge
Description
Compute optimized [AMD processors] Gen5 8xlarge
Family
c5a
Hw Virt
Status
active
Observed At
2026-07-29T08:53:58.048955

Availability

REGION / IDSPOTONDEMAND
Mumbai (IN) / ap-south-1
0.3763 USD/h 0.752 USD/h
Ohio (US) / us-east-2
0.431 USD/h 1.232 USD/h
Oregon (US) / us-west-2
0.541475 USD/h 1.232 USD/h
Northern Virgina (US) / us-east-1
0.59238 USD/h 1.232 USD/h
Stockholm (SE) / eu-north-1
0.5542 USD/h 1.312 USD/h
Quebec (CA) / ca-central-1
0.5321 USD/h 1.344 USD/h
Seoul (KR) / ap-northeast-2
0.605367 USD/h 1.376 USD/h
Dublin (IE) / eu-west-1
0.757533 USD/h 1.376 USD/h
Frankfurt (DE) / eu-central-1
0.648033 USD/h 1.392 USD/h
Singapore (SG) / ap-southeast-1
0.731 USD/h 1.408 USD/h
Milan (IT) / eu-south-1
0.3464 USD/h 1.456 USD/h
Paris (FR) / eu-west-3
0.57545 USD/h 1.456 USD/h
London (GB) / eu-west-2
0.644167 USD/h 1.456 USD/h
California (US) / us-west-1
0.7044 USD/h 1.52 USD/h
Tokyo (JP) / ap-northeast-1
0.66525 USD/h 1.536 USD/h
Hong Kong (HK) / ap-east-1
0.941067 USD/h 1.552 USD/h
Sydney (AU) / ap-southeast-2
0.774133 USD/h 1.6 USD/h
Cape Town (ZA) / af-south-1
0.721233 USD/h 1.648 USD/h
Sao Paulo (BR) / sa-east-1
0.307433 USD/h 1.888 USD/h

Processor

vCPUs
32
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
16
CPU Speed
3.3 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7R32
CPU L1D Cache
32 KiB
CPU L1D Cache Total
512 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
512 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
64 MiB
CPU Flags
fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, ht, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, nonstop_tsc, cpuid, extd_apicid, aperfmperf, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, sse4_1, sse4_2, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, topoext, ssbd, ibrs, ibpb, stibp, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, clzero, xsaveerptr, rdpru, wbnoinvd, arat, npt, nrip_save, rdpid
Ecpus
16
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
64 GiB
Memory Amount Actual
64 GiB
Memory Generation
DDR4
Memory Speed
2933 Mhz
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
      10 Gbps
      Network Speed Max
      10 Gbps
      Network Storage Speed Baseline
      3.17 Gbps
      Network Storage Speed Max
      3.17 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A dedicated AMD EPYC compute-optimized virtual server featuring thirty-two vCPUs and sixty-four gigabytes of DDR4 memory for parallelized workloads.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c5a.8xlarge is a compute-optimized instance featuring 32 dedicated vCPUs and 16 physical cores powered by an AMD EPYC 7R32 processor running at 3.3 GHz. Built on the Nitro hypervisor, it includes 64.0 GB of DDR4 memory at 3 GHz, providing 2.0 GB of RAM per core, with no local storage or GPU accelerators. Network performance is anchored by a 10 Gbps baseline bandwidth. Benchmark results reveal a significant performance tradeoff: while single-core CPU performance is poor, ranking in the bottom 10%, multi-core CPU and memory bandwidth metrics consistently achieve average ratings, and PassMark memory performance is strong. This hardware profile is qualitatively cost-efficient for parallelized compute tasks. It is best suited for multi-threaded workloads such as software compilation, static web serving, and moderate database operations, while being poorly suited for single-threaded applications or large-scale LLM inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.23Score
      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) 2,569,378 ops/sec 1,896,415 ops/sec 1.35 50.00% 50.00% +16.20%
      Redis RPS (pipeline=16, SET) 17,366,139 ops/sec 11,539,523 ops/sec 1.5 20.00% 20.00% +8.45%
      PassMark Memory Mark (composite) 2,817 2,411 1.17 10.00% 10.00% +1.58%
      Memory bandwidth (read, 16 MB ~ L3) 74,923 MB/sec 107,368 MB/sec 0.698 10.00% 10.00% -3.53%
      PassMark single-thread CPU 2,133 Mops/s 2,363 Mops/s 0.903 10.00% 10.00% -1.02%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,348

      Geekbench Multi-Core

      Score: 11,539

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 34612
      Compression
      		 477011
      Encryption
      		 34150
      Extended Instructions
      		 29703
      Floating Point Maths
      		 64424
      Integer Maths
      		 107971
      Physics
      		 3310
      Prime Numbers
      		 162
      Single Threaded
      		 2133
      String Sorting
      		 65885

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2817
      Database Operations
      		 10979
      Memory Latency
      		 50
      Memory Read Cached
      		 24672
      Memory Read Uncached
      		 12619
      Memory Write
      		 12900

      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
      c5a.large 24 GiB0
      c5a.xlarge 48 GiB0
      c5a.2xlarge 816 GiB0
      c5a.4xlarge 1632 GiB0
      c5a.12xlarge 4896 GiB0
      c5a.16xlarge 64128 GiB0
      c5a.24xlarge 96192 GiB0

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      c5a.8xlarge FAQs