ecs.c6a.4xlarge by Alibaba Cloud

ecs.c6a.4xlarge is a ecs.c6a family (16 vCPUs, 32 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 16 vCPUs, 32 GiB of memory and 0 GB of storage. The pricing starts at 0.3557 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
6,127
(All-cores)
765
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c6a.4xlarge
Description
ecs.c6a family (16 vCPUs, 32 GiB RAM, 0 GB storage)
Family
ecs.c6a
Hw Virt
Average Time To Start
10.5
Status
active
Observed At
2026-09-13T16:31:47.834172

Availability

REGION / IDSPOTONDEMAND
Hangzhou (CN) / cn-hangzhou
0.3557 USD/h 0.363 USD/h
Beijing (CN) / cn-beijing
- 0.363 USD/h
Guangzhou (CN) / cn-guangzhou
- 0.363 USD/h
Shenzhen (CN) / cn-shenzhen
- 0.363 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
16
CPU Speed
2.6 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7H12
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
16 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, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, topoext, perfctr_core, ssbd, ibpb, stibp, vmmcall, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, rdseed, adx, smap, sha_ni, xsaveopt, xsavec, xgetbv1, arat
Ecpus
8
Scalability
50

System Resources and Accelerators

MEMORY
Memory Amount
32 GiB
Memory Amount Actual
32 GiB
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
      5 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A dedicated compute-optimized virtual server featuring sixteen AMD EPYC cores and balanced multi-threaded performance for web serving and compilation workloads.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c6a.4xlarge is a compute-optimized instance featuring 16 dedicated physical cores and 16 vCPUs powered by an AMD EPYC 7H12 processor running at 2.6 GHz. Built on the KVM hypervisor, it provides 32.0 GB of RAM, resulting in a 2.0 GB per core memory allocation, with no local storage or GPU resources. Network performance is anchored by a 5 Gbps baseline bandwidth. Benchmarks show average multi-core CPU and database performance, though single-core execution and uncached large-block memory bandwidth represent performance tradeoffs, ranking in the lower percentiles. This hardware profile is suited for multi-threaded workloads, static web serving, and moderate compilation tasks where dedicated CPU resources are required without a high memory-to-core ratio.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.633Score
      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) 1,161,881 ops/sec 1,917,397 ops/sec 0.606 50.00% 50.00% -22.20%
      Redis RPS (pipeline=16, SET) 8,011,539 ops/sec 11,681,410 ops/sec 0.686 20.00% 20.00% -7.26%
      PassMark Memory Mark (composite) 2,539 2,418 1.05 10.00% 10.00% +0.49%
      Memory bandwidth (read, 16 MB ~ L3) 30,509 MB/sec 108,140 MB/sec 0.282 10.00% 10.00% -11.90%
      PassMark single-thread CPU 2,128 Mops/s 2,365 Mops/s 0.9 10.00% 10.00% -1.05%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,305

      Geekbench Multi-Core

      Score: 7,305

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 18932
      Compression
      		 240571
      Encryption
      		 17063
      Extended Instructions
      		 14370
      Floating Point Maths
      		 32192
      Integer Maths
      		 53901
      Physics
      		 1341
      Prime Numbers
      		 74
      Single Threaded
      		 2128
      String Sorting
      		 30071

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2539
      Database Operations
      		 5108
      Memory Latency
      		 49
      Memory Read Cached
      		 24417
      Memory Read Uncached
      		 12216
      Memory Write
      		 11341

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      ecs.c6a.large 24 GiB0
      ecs.c6a.xlarge 48 GiB0
      ecs.c6a.2xlarge 816 GiB0
      ecs.c6a.8xlarge 3264 GiB0
      ecs.c6a.16xlarge 64128 GiB0
      ecs.c6a.32xlarge 128256 GiB0

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      ecs.c6a.4xlarge FAQs