c5a.24xlarge by Amazon Web Services
(All-cores)
(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 | 2026-06-23T11:12:03.930532 |
Availability
| REGION / ID | SPOT | ONDEMAND |
|---|---|---|
Mumbai (IN) / ap-south-1 | 0.867833 USD/h | 2.256 USD/h |
Northern Virgina (US) / us-east-1 | 1.27056 USD/h | 3.696 USD/h |
Ohio (US) / us-east-2 | 1.548 USD/h | 3.696 USD/h |
Oregon (US) / us-west-2 | 1.849275 USD/h | 3.696 USD/h |
Stockholm (SE) / eu-north-1 | 1.114367 USD/h | 3.936 USD/h |
Quebec (CA) / ca-central-1 | 0.951367 USD/h | 4.032 USD/h |
Seoul (KR) / ap-northeast-2 | 1.5398 USD/h | 4.128 USD/h |
Dublin (IE) / eu-west-1 | 1.709033 USD/h | 4.128 USD/h |
Frankfurt (DE) / eu-central-1 | 1.216733 USD/h | 4.176 USD/h |
Singapore (SG) / ap-southeast-1 | 1.267867 USD/h | 4.224 USD/h |
Paris (FR) / eu-west-3 | 0.8149 USD/h | 4.368 USD/h |
Milan (IT) / eu-south-1 | 0.7141 USD/h | 4.368 USD/h |
London (GB) / eu-west-2 | 1.540133 USD/h | 4.368 USD/h |
California (US) / us-west-1 | 1.25795 USD/h | 4.56 USD/h |
Tokyo (JP) / ap-northeast-1 | 1.80815 USD/h | 4.608 USD/h |
Hong Kong (HK) / ap-east-1 | 4.378367 USD/h | 4.656 USD/h |
Sydney (AU) / ap-southeast-2 | 1.811033 USD/h | 4.8 USD/h |
Cape Town (ZA) / af-south-1 | 0.6771 USD/h | 4.944 USD/h |
Sao Paulo (BR) / sa-east-1 | 1.279933 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 | 102.5 |
System Resources and Accelerators
| MEMORY | |
|---|---|
Memory Amount | 192 GiB |
Memory Amount Actual | 192 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 | 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 instance optimized for parallel processing, cryptographic workloads, and memory-cached operations without local storage.
Amazon Web Services c5a.24xlarge is a compute-optimized instance featuring 96 vCPUs and 48 physical cores powered by an AMD EPYC 7R32 processor running at 3.3 GHz. Built on the x86_64 architecture and managed by the Nitro hypervisor, it includes 192.0 GB of DDR4 memory but lacks local storage and GPU hardware. While single-core performance is limited, placing in the bottom 10% in stress-ng tests, the instance delivers strong multi-core and cryptographic capabilities, scoring in the top 10% for PassMark CPU encryption. It also achieves strong results in software compilation, ray tracing, and Redis operations, supported by a high cached memory read bandwidth of 4497.3 GB/sec. With a baseline network bandwidth of 20 Gbps, this instance is highly suited for parallelized compute workloads, software development pipelines, and memory-cached database operations.
Economics
Performance
Memory Bandwidth
Compression
OpenSSL
Geekbench Single-Core
Geekbench Multi-Core
Passmark CPU Scores
| BENCHMARK | SCORE |
|---|---|
Mark | 69069 |
Compression | 1416113 |
Encryption | 102374 |
Extended Instructions | 81540 |
Floating Point Maths | 193172 |
Integer Maths | 323505 |
Physics | 6478 |
Prime Numbers | 439 |
Single Threaded | 2099 |
String Sorting | 178727 |
Passmark Memory Scores
| BENCHMARK | SCORE |
|---|---|
Memory Mark | 2897 |
Database Operations | 21636 |
Memory Latency | 52 |
Memory Read Cached | 24189 |
Memory Read Uncached | 12716 |
Memory Write | 13324 |
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
| INSTANCE | vCPUs | MEMORY | GPUs |
|---|---|---|---|
| c5a.large | 2 | 4 GiB | 0 |
| c5a.xlarge | 4 | 8 GiB | 0 |
| c5a.2xlarge | 8 | 16 GiB | 0 |
| c5a.4xlarge | 16 | 32 GiB | 0 |
| c5a.8xlarge | 32 | 64 GiB | 0 |
| c5a.12xlarge | 48 | 96 GiB | 0 |
| c5a.16xlarge | 64 | 128 GiB | 0 |
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