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ecs.c4.3xlarge by Alibaba Cloud

ecs.c4.3xlarge is a ecs.c4 family (12 vCPUs, 24 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 12 vCPUs, 24 GiB of memory and 0 GB of storage. The pricing starts at 0.66 USD per hour.
12 vCPU
24 GiB Memory
Spare SCore
8625
(All-cores)
1150
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c4.3xlarge
Description
ecs.c4 family (12 vCPUs, 24 GiB RAM, 0 GB storage)
Family
ecs.c4
Hw Virt
Average Time To Start
9
Status
active
Observed At
2026-07-27T11:27:25.045206

Availability

REGION / IDSPOTONDEMAND
Hong Kong (HK) / cn-hongkong
- 0.66 USD/h

Processor

vCPUs
12
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
12
CPU Speed
3.2 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
E5-2667 v4
CPU L1D Cache
32 KiB
CPU L1D Cache Total
192 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
192 KiB
CPU L2 Cache
256 KiB
CPU L2 Cache Total
2 MiB
CPU L3 Cache
25 MiB
CPU L3 Cache Total
25 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, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, pti, ibrs, ibpb, stibp, fsgsbase, tsc_adjust, bmi1, hle, avx2, smep, bmi2, erms, invpcid, rtm, rdseed, adx, smap, xsaveopt, arat
Ecpus
7.5
Scalability
62.5

System Resources and Accelerators

MEMORY
Memory Amount
24 GiB
Memory Amount Actual
24 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
      4.5 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A dedicated twelve-core compute instance with a balanced memory-to-CPU ratio for multi-threaded workloads and web serving.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c4.3xlarge is a compute-optimized instance featuring 12 dedicated vCPUs and 24.0 GB of RAM, powered by an Intel Xeon E5-2667 v4 processor at 3.2 GHz. Operating on the KVM hypervisor with an x86_64 architecture, it provides a 1:2 vCPU-to-RAM ratio without local storage or GPU accelerators. Network performance is anchored by a 4 Gbps baseline bandwidth. Benchmarks reveal average multi-core CPU and memory read performance, though single-core execution and large-block memory write bandwidth are weak. This instance is qualitatively cost-efficient for compute-focused workloads that scale across multiple threads, such as static web serving, multi-threaded decompression, and moderate database operations. It is less effective for single-threaded tasks or memory-heavy applications.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.617Score
      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) 1,101,580 ops/sec 1,896,415 ops/sec 0.581 50.00% 50.00% -23.80%
      Redis RPS (pipeline=16, SET) 6,304,429 ops/sec 11,539,523 ops/sec 0.546 20.00% 20.00% -11.40%
      PassMark Memory Mark (composite) 2,040 2,411 0.846 10.00% 10.00% -1.66%
      Memory bandwidth (read, 16 MB ~ L3) 53,534 MB/sec 107,368 MB/sec 0.499 10.00% 10.00% -6.72%
      PassMark single-thread CPU 2,266 Mops/s 2,363 Mops/s 0.959 10.00% 10.00% -0.42%

      Memory Bandwidth

      Compression

      OpenSSL

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 11610
      Compression
      		 167533
      Encryption
      		 3680
      Extended Instructions
      		 8781
      Floating Point Maths
      		 23923
      Integer Maths
      		 37918
      Physics
      		 911
      Prime Numbers
      		 57
      Single Threaded
      		 2266
      String Sorting
      		 23876

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2040
      Database Operations
      		 3837
      Memory Latency
      		 63
      Memory Read Cached
      		 25163
      Memory Read Uncached
      		 8140
      Memory Write
      		 7301

      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
      ecs.c4.xlarge 48 GiB0
      ecs.c4.2xlarge 816 GiB0
      ecs.c4.4xlarge 1632 GiB0

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      ecs.c4.3xlarge FAQs