c6a.16xlarge by Amazon Web Services
(All-cores)
(Single-core)
Specifications
Server Metadata
Vendor ID | aws |
Name | c6a.16xlarge |
Description | Compute optimized [AMD processors] Gen6 16xlarge |
Family | c6a |
Hw Virt | |
Status | active |
Observed At | 2026-06-29T08:51:13.874497 |
Availability
| REGION / ID | SPOT | ONDEMAND |
|---|---|---|
Hyderabad (IN) / ap-south-2 | 0.393867 USD/h | 1.496 USD/h |
Mumbai (IN) / ap-south-1 | 0.551733 USD/h | 1.496 USD/h |
Ohio (US) / us-east-2 | 0.8472 USD/h | 2.448 USD/h |
Oregon (US) / us-west-2 | 0.93635 USD/h | 2.448 USD/h |
Northern Virgina (US) / us-east-1 | 0.91804 USD/h | 2.448 USD/h |
Dublin (IE) / eu-west-1 | 1.358633 USD/h | 2.6266 USD/h |
Quebec (CA) / ca-central-1 | 0.773467 USD/h | 2.6784 USD/h |
Frankfurt (DE) / eu-central-1 | 1.033267 USD/h | 2.7936 USD/h |
Singapore (SG) / ap-southeast-1 | 1.188133 USD/h | 2.8224 USD/h |
London (GB) / eu-west-2 | 1.096667 USD/h | 2.9088 USD/h |
California (US) / us-west-1 | 1.2187 USD/h | 3.0528 USD/h |
Tokyo (JP) / ap-northeast-1 | 1.224867 USD/h | 3.0816 USD/h |
Hong Kong (HK) / ap-east-1 | 0.5545 USD/h | 3.1104 USD/h |
Sydney (AU) / ap-southeast-2 | 1.516533 USD/h | 3.1968 USD/h |
Sao Paulo (BR) / sa-east-1 | 0.658833 USD/h | 3.7728 USD/h |
Processor
vCPUs | 64 |
Hypervisor | nitro |
CPU Allocation | Dedicated |
CPU Cores | 32 |
CPU Speed | 3.6 GHz |
CPU Architecture | x86_64 |
CPU Manufacturer | AMD |
CPU Family | EPYC |
CPU Model | 7R13 |
CPU L1D Cache | 32 KiB |
CPU L1D Cache Total | 1 MiB |
CPU L1I Cache | 32 KiB |
CPU L1I Cache Total | 1 MiB |
CPU L2 Cache | 512 KiB |
CPU L2 Cache Total | 16 MiB |
CPU L3 Cache | 32 MiB |
CPU L3 Cache Total | 128 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, pcid, sse4_1, sse4_2, x2apic, 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, invpcid, rdseed, adx, smap, clflushopt, clwb, sha_ni, xsaveopt, xsavec, xgetbv1, clzero, xsaveerptr, rdpru, wbnoinvd, arat, npt, nrip_save, vaes, vpclmulqdq, rdpid |
Ecpus | 32 |
Scalability | 100 |
System Resources and Accelerators
| MEMORY | |
|---|---|
Memory Amount | 128 GiB |
Memory Amount Actual | 128 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 | 25 Gbps |
Network Speed Max | 25 Gbps |
Network Storage Speed Baseline | 20 Gbps |
Network Storage Speed Max | 20 Gbps |
Inbound Traffic | 0 GB/month |
Outbound Traffic | 0 GB/month |
IPv4 | 0 |
Server Description
A high-core-density, compute-optimized virtual server designed for processor-intensive workloads, software compilation, and high-throughput database operations.
Amazon Web Services c6a.16xlarge is a compute-optimized server featuring a dedicated AMD EPYC 7R13 processor with 64 vCPUs running at 3.6 GHz on the Nitro hypervisor. It is configured with 128.0 GB of DDR4 memory, providing 2.0 GB of RAM per core, and delivers a baseline network bandwidth of 25 Gbps. This instance does not include local storage or GPUs. Performance benchmarks show strong multi-core CPU capabilities, with a stress-ng multi-core score of 95,671.57 and high efficiency in software compilation, database operations, and Redis SET operations. However, uncached large-block memory bandwidth remains average. The c6a.16xlarge is highly suited for compute-heavy workloads such as software compilation, high-throughput web serving, and small-scale language model inference where local storage is not a primary requirement.
Economics
Performance
Memory Bandwidth
Compression
OpenSSL
Geekbench Single-Core
Geekbench Multi-Core
Passmark CPU Scores
| BENCHMARK | SCORE |
|---|---|
Mark | 67170 |
Compression | 1116036 |
Encryption | 75818 |
Extended Instructions | 60752 |
Floating Point Maths | 161548 |
Integer Maths | 294370 |
Physics | 6481 |
Prime Numbers | 371 |
Single Threaded | 2621 |
String Sorting | 144603 |
Passmark Memory Scores
| BENCHMARK | SCORE |
|---|---|
Memory Mark | 2886 |
Database Operations | 26734 |
Memory Latency | 63 |
Memory Read Cached | 26419 |
Memory Read Uncached | 17662 |
Memory Write | 17159 |
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 |
|---|---|---|---|
| c6a.large | 2 | 4 GiB | 0 |
| c6a.xlarge | 4 | 8 GiB | 0 |
| c6a.2xlarge | 8 | 16 GiB | 0 |
| c6a.4xlarge | 16 | 32 GiB | 0 |
| c6a.8xlarge | 32 | 64 GiB | 0 |
| c6a.12xlarge | 48 | 96 GiB | 0 |
| c6a.24xlarge | 96 | 192 GiB | 0 |
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