c7a.4xlarge by Amazon Web Services
(All-cores)
(Single-core)
Specifications
Server Metadata
Vendor ID | aws |
Name | c7a.4xlarge |
Description | Compute optimized [AMD processors] Gen7 4xlarge |
Family | c7a |
Hw Virt | |
Status | active |
Observed At | 2026-06-29T23:07:18.416278 |
Availability
| REGION / ID | SPOT | ONDEMAND |
|---|---|---|
Northern Virgina (US) / us-east-1 | 0.33268 USD/h | 0.8211 USD/h |
Ohio (US) / us-east-2 | 0.318267 USD/h | 0.8211 USD/h |
Oregon (US) / us-west-2 | 0.331125 USD/h | 0.8211 USD/h |
Stockholm (SE) / eu-north-1 | 0.2882 USD/h | 0.879 USD/h |
Aragón (ES) / eu-south-2 | 0.1591 USD/h | 0.8808 USD/h |
Dublin (IE) / eu-west-1 | 0.458933 USD/h | 0.881 USD/h |
Frankfurt (DE) / eu-central-1 | 0.3869 USD/h | 0.937 USD/h |
Singapore (SG) / ap-southeast-1 | 0.4371 USD/h | 0.9467 USD/h |
London (GB) / eu-west-2 | 0.4664 USD/h | 0.9757 USD/h |
Tokyo (JP) / ap-northeast-1 | 0.462567 USD/h | 1.0336 USD/h |
Processor
vCPUs | 16 |
Hypervisor | nitro |
CPU Allocation | Dedicated |
CPU Cores | 16 |
CPU Speed | 3.7 GHz |
CPU Architecture | x86_64 |
CPU Manufacturer | AMD |
CPU Family | EPYC |
CPU Model | 9R14 |
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 | 1 MiB |
CPU L2 Cache Total | 16 MiB |
CPU L3 Cache | 32 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, monitor, 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, perfctr_core, ssbd, perfmon_v2, ibrs, ibpb, stibp, ibrs_enhanced, vmmcall, fsgsbase, bmi1, avx2, smep, bmi2, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, avx512_bf16, clzero, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, flush_l1d |
Ecpus | 15 |
Scalability | 93.75 |
System Resources and Accelerators
| MEMORY | |
|---|---|
Memory Amount | 32 GiB |
Memory Amount Actual | 32 GiB |
Memory Generation | DDR5 |
Memory Speed | 4800 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 | 6.25 Gbps |
Network Speed Max | 12.5 Gbps |
Network Storage Speed Baseline | 5 Gbps |
Network Storage Speed Max | 10 Gbps |
Inbound Traffic | 0 GB/month |
Outbound Traffic | 0 GB/month |
IPv4 | 0 |
Server Description
A compute-optimized instance featuring dedicated AMD EPYC cores and high-speed DDR5 memory for single-threaded and lightweight inference workloads.
The Amazon Web Services c7a.4xlarge is a compute-optimized instance featuring 16 dedicated physical cores and 16 vCPUs powered by an AMD EPYC 9R14 processor running at 3.7 GHz. Built on the AWS Nitro hypervisor, it includes 32.0 GB of DDR5 memory operating at 5 GHz, resulting in a 2.0 GB per core memory ratio. It does not include local storage or GPUs, and it provides a baseline network bandwidth of 6 Gbps. Performance benchmarks highlight strong single-core CPU capabilities and top-tier text generation speeds for small language models. This instance is designed for compute-intensive workloads, text processing, and lightweight inference tasks that benefit from dedicated physical cores and high-speed memory.
Economics
Performance
Memory Bandwidth
Compression
OpenSSL
Geekbench Single-Core
Geekbench Multi-Core
Passmark CPU Scores
| BENCHMARK | SCORE |
|---|---|
Mark | 36580 |
Compression | 420390 |
Encryption | 20929 |
Extended Instructions | 39735 |
Floating Point Maths | 85278 |
Integer Maths | 96625 |
Physics | 4235 |
Prime Numbers | 304 |
Single Threaded | 2889 |
String Sorting | 59692 |
Passmark Memory Scores
| BENCHMARK | SCORE |
|---|---|
Memory Mark | 2684 |
Database Operations | 14975 |
Memory Latency | 76 |
Memory Read Cached | 27834 |
Memory Read Uncached | 27092 |
Memory Write | 26456 |
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 |
|---|---|---|---|
| c7a.medium | 1 | 2 GiB | 0 |
| c7a.large | 2 | 4 GiB | 0 |
| c7a.xlarge | 4 | 8 GiB | 0 |
| c7a.2xlarge | 8 | 16 GiB | 0 |
| c7a.8xlarge | 32 | 64 GiB | 0 |
| c7a.12xlarge | 48 | 96 GiB | 0 |
| c7a.16xlarge | 64 | 128 GiB | 0 |
Similar Servers
| INSTANCE | VENDOR | vCPUs | MEMORY | GPUs |
|---|