c5a.24xlarge by Amazon Web Services

c5a.24xlarge is a Compute optimized [AMD processors] Gen5 24xlarge server offered by Amazon Web Services with 96 vCPUs, 192 GiB of memory and 0 GB of storage. The pricing starts at 0.4164 USD per hour.
96 vCPU
192 GiB Memory
Spare SCore
36,867
(All-cores)
749
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c5a.24xlarge
Description
Compute optimized [AMD processors] Gen5 24xlarge
Family
c5a
Hw Virt
Status
active
Observed At
2026-11-05T18:37:25.185595

Availability

REGION / IDSPOTONDEMAND
Mumbai (IN) / ap-south-1
0.8211 USD/h 2.256 USD/h
Ohio (US) / us-east-2
0.9528 USD/h 3.696 USD/h
Northern Virgina (US) / us-east-1
1.18218 USD/h 3.696 USD/h
Oregon (US) / us-west-2
1.512225 USD/h 3.696 USD/h
Stockholm (SE) / eu-north-1
0.487767 USD/h 3.936 USD/h
Quebec (CA) / ca-central-1
1.1604 USD/h 4.032 USD/h
Seoul (KR) / ap-northeast-2
1.322433 USD/h 4.128 USD/h
Dublin (IE) / eu-west-1
1.7359 USD/h 4.128 USD/h
Frankfurt (DE) / eu-central-1
1.350333 USD/h 4.176 USD/h
Singapore (SG) / ap-southeast-1
1.637433 USD/h 4.224 USD/h
Paris (FR) / eu-west-3
1.13755 USD/h 4.368 USD/h
Milan (IT) / eu-south-1
1.267967 USD/h 4.368 USD/h
London (GB) / eu-west-2
1.3299 USD/h 4.368 USD/h
California (US) / us-west-1
1.25805 USD/h 4.56 USD/h
Tokyo (JP) / ap-northeast-1
1.5571 USD/h 4.608 USD/h
Hong Kong (HK) / ap-east-1
4.656 USD/h 4.656 USD/h
Sydney (AU) / ap-southeast-2
1.4558 USD/h 4.8 USD/h
Cape Town (ZA) / af-south-1
1.011233 USD/h 4.944 USD/h
Sao Paulo (BR) / sa-east-1
0.5664 USD/h 5.664 USD/h

Processor

vCPUs
96
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
48
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
2 MiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
2 MiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
24 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
192 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, monitor, 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, perfctr_core, 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
49.2
Scalability
51.25

System Resources and Accelerators

MEMORY
Memory Amount
192 GiB
Memory Amount Actual
192 GiB
Memory Generation
DDR4
Memory Speed
2933 Mhz
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
      20 Gbps
      Network Speed Max
      20 Gbps
      Network Storage Speed Baseline
      9.5 Gbps
      Network Storage Speed Max
      9.5 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A high-core-count compute server featuring AMD EPYC processors, optimized for parallel workloads, cryptography, and software compilation.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c5a.24xlarge is an x86_64 compute-optimized server featuring an AMD EPYC 7R32 processor with 96 vCPUs (48 physical cores) running at 3.3 GHz and 192.0 GB of DDR4 memory. Operating on the Nitro hypervisor, it delivers a baseline network bandwidth of 20 Gbps without local storage or GPU accelerators. Benchmarks reveal a significant tradeoff: single-core CPU performance is in the bottom 10%, whereas multi-core capabilities and cryptographic operations rank in the top 25% and top 10% respectively. The server also shows strong performance in software compilation, ray tracing, and image processing. This hardware profile is qualitatively cost-efficient for highly parallelized, compute-bound tasks rather than single-threaded or memory-intensive applications. It is suited for workloads such as software compilation, cryptography, parallel processing, and moderate web serving.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.7Score
      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) 7,648,580 ops/sec 1,936,298 ops/sec 4 50.00% 50.00% +100.00%
      Redis RPS (pipeline=16, SET) 50,219,212 ops/sec 11,797,257 ops/sec 4.2 20.00% 20.00% +33.00%
      PassMark Memory Mark (composite) 2,897 2,407 1.2 10.00% 10.00% +1.80%
      Memory bandwidth (read, 16 MB ~ L3) 121,358 MB/sec 108,490 MB/sec 1.1 10.00% 10.00% +0.96%
      PassMark single-thread CPU 2,099 Mops/s 2,365 Mops/s 0.88 10.00% 10.00% -1.30%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,321

      Geekbench Multi-Core

      Score: 15,228

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 69,069
      Compression
      		 1,416,113
      Encryption
      		 102,374
      Extended Instructions
      		 81,540
      Floating Point Maths
      		 193,172
      Integer Maths
      		 323,505
      Physics
      		 6,478
      Prime Numbers
      		 439
      Single Threaded
      		 2,099
      String Sorting
      		 178,727

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,897
      Database Operations
      		 21,636
      Memory Latency
      		 52
      Memory Read Cached
      		 24,189
      Memory Read Uncached
      		 12,716
      Memory Write
      		 13,324

      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
      c5a.large 24 GiB0
      c5a.xlarge 48 GiB0
      c5a.2xlarge 816 GiB0
      c5a.4xlarge 1632 GiB0
      c5a.8xlarge 3264 GiB0
      c5a.12xlarge 4896 GiB0
      c5a.16xlarge 64128 GiB0

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      c5a.24xlarge FAQs