logo

c6a.4xlarge by Amazon Web Services

c6a.4xlarge is a Compute optimized [AMD processors] Gen6 4xlarge server offered by Amazon Web Services with 16 vCPUs, 32 GiB of memory and 0 GB of storage. The pricing starts at 0.1222 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
23947
(All-cores)
2993
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c6a.4xlarge
Description
Compute optimized [AMD processors] Gen6 4xlarge
Family
c6a
Hw Virt
Status
active
Observed At
2026-07-28T18:50:56.398915

Availability

REGION / IDSPOTONDEMAND
Hyderabad (IN) / ap-south-2
0.163433 USD/h 0.374 USD/h
Mumbai (IN) / ap-south-1
0.162567 USD/h 0.374 USD/h
Ohio (US) / us-east-2
0.2167 USD/h 0.612 USD/h
Oregon (US) / us-west-2
0.2391 USD/h 0.612 USD/h
Northern Virgina (US) / us-east-1
0.28878 USD/h 0.612 USD/h
Dublin (IE) / eu-west-1
0.3751 USD/h 0.6566 USD/h
Quebec (CA) / ca-central-1
0.3119 USD/h 0.6696 USD/h
Frankfurt (DE) / eu-central-1
0.327733 USD/h 0.6984 USD/h
Singapore (SG) / ap-southeast-1
0.3968 USD/h 0.7056 USD/h
London (GB) / eu-west-2
0.253333 USD/h 0.7272 USD/h
California (US) / us-west-1
0.29325 USD/h 0.7632 USD/h
Tokyo (JP) / ap-northeast-1
0.322 USD/h 0.7704 USD/h
Hong Kong (HK) / ap-east-1
0.34935 USD/h 0.7776 USD/h
Sydney (AU) / ap-southeast-2
0.3655 USD/h 0.7992 USD/h
Sao Paulo (BR) / sa-east-1
0.409567 USD/h 0.9432 USD/h

Processor

vCPUs
16
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
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
256 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
256 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
4 MiB
CPU L3 Cache
32 MiB
CPU L3 Cache Total
32 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
8
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
32 GiB
Memory Amount Actual
32 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
      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 x86_64 platform featuring dedicated AMD EPYC processors and balanced memory bandwidth for compute-intensive workloads.

      Compute OptimizedGeneral Purpose

      Amazon Web Services c6a.4xlarge is an x86_64 compute-optimized instance featuring an AMD EPYC 7R13 processor with 16 dedicated vCPUs, 8 physical cores, and a 3.6 GHz clock speed. It is configured with 32.0 GB of DDR4 memory, providing 2.0 GB of RAM per core, and operates on the Nitro hypervisor with a baseline network bandwidth of 6 Gbps. The instance lacks local storage and GPU accelerators. Performance benchmarks show strong single-core CPU execution and efficient small-model text generation, though uncached large-block memory write bandwidth is relatively weak. Lacking AVX-512 support, it relies on AES, VAES, and SHA-NI for cryptographic tasks. This instance is suited for compute-bound workloads, static web serving, and moderate data processing tasks that do not require high memory-to-CPU ratios or local storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.783Score
      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) 1,442,589 ops/sec 1,896,415 ops/sec 0.761 50.00% 50.00% -12.80%
      Redis RPS (pipeline=16, SET) 9,967,508 ops/sec 11,539,523 ops/sec 0.864 20.00% 20.00% -2.88%
      PassMark Memory Mark (composite) 2,581 2,411 1.07 10.00% 10.00% +0.68%
      Memory bandwidth (read, 16 MB ~ L3) 40,635 MB/sec 107,368 MB/sec 0.378 10.00% 10.00% -9.27%
      PassMark single-thread CPU 2,645 Mops/s 2,363 Mops/s 1.12 10.00% 10.00% +1.14%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,676

      Geekbench Multi-Core

      Score: 9,683

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 23584
      Compression
      		 280934
      Encryption
      		 18954
      Extended Instructions
      		 16526
      Floating Point Maths
      		 40959
      Integer Maths
      		 73641
      Physics
      		 2010
      Prime Numbers
      		 100
      Single Threaded
      		 2645
      String Sorting
      		 37423

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2581
      Database Operations
      		 7169
      Memory Latency
      		 64
      Memory Read Cached
      		 26354
      Memory Read Uncached
      		 17477
      Memory Write
      		 16813

      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
      c6a.large 24 GiB0
      c6a.xlarge 48 GiB0
      c6a.2xlarge 816 GiB0
      c6a.8xlarge 3264 GiB0
      c6a.12xlarge 4896 GiB0
      c6a.16xlarge 64128 GiB0
      c6a.24xlarge 96192 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYGPUs

      c6a.4xlarge FAQs