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 0.57 USD per hour.
12 vCPU
24 GiB Memory
Spare SCore
8,625
(All-cores)
1,150
(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
2026-10-26T23:54:08.508856

Availability

REGION / IDSPOTONDEMAND
Virginia (US) / us-east-1
- 0.57 USD/h
Hong Kong (HK) / cn-hongkong
- 0.66 USD/h

Processor

vCPUs
12
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
6
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
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    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 compute-optimized virtual server featuring twelve dedicated vCPUs and twenty-four gigabytes of memory for stateless, multi-threaded workloads.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c4.3xlarge is a compute-optimized virtual server powered by a dedicated Intel Xeon E5-2667 v4 processor running at 3.2 GHz. It features 12 vCPUs, 24.0 GB of RAM, and a 4 Gbps baseline network bandwidth, with no local storage or GPU accelerators. Benchmarks show average multi-core performance, with a stress-ng multi-core score of 8624.76 and a Geekbench multi-core score of 5654.0, though single-core performance and large-block memory write speeds are weak. With a 1:2 vCPU-to-RAM ratio, this KVM-based instance is a cost-effective choice for stateless, compute-focused workloads. It is well-suited for multi-threaded applications, software compilation, static web serving, and moderate database operations.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.61Score
      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 1,918,343 ops/sec 0.58 50.00% 50.00% -24.00%
      Redis RPS (pipeline=16, SET) 6,304,429 ops/sec 11,704,734 ops/sec 0.53 20.00% 20.00% -12.00%
      PassMark Memory Mark (composite) 2,040 2,416 0.83 10.00% 10.00% -1.80%
      Memory bandwidth (read, 16 MB ~ L3) 53,534 MB/sec 108,420 MB/sec 0.49 10.00% 10.00% -6.90%
      PassMark single-thread CPU 2,266 Mops/s 2,365 Mops/s 0.96 10.00% 10.00% -0.41%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,166

      Geekbench Multi-Core

      Score: 5,654

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 11,610
      Compression
      		 167,533
      Encryption
      		 3,680
      Extended Instructions
      		 8,781
      Floating Point Maths
      		 23,923
      Integer Maths
      		 37,918
      Physics
      		 911
      Prime Numbers
      		 57
      Single Threaded
      		 2,266
      String Sorting
      		 23,876

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,040
      Database Operations
      		 3,837
      Memory Latency
      		 63
      Memory Read Cached
      		 25,163
      Memory Read Uncached
      		 8,140
      Memory Write
      		 7,301

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 256.73 244.85 0.95×
      bitops
      		 122,336 789,626 6.45×
      branch
      		 159,541 1,411,802 8.85×
      funccall
      		 552.16 3,296 5.97×
      funcret
      		 10,733 94,162 8.77×
      hash
      		 129,345 1,157,610 8.95×
      intmath
      		 22,756 196,574 8.64×
      nop
      		 186,374 988,925 5.31×
      prime
      		 316,331 2,040,452 6.45×
      rotate
      		 101,024 786,847 7.79×
      str
      		 695,951 4,657,595 6.69×
      wcs
      		 468,567 2,883,471 6.15×
      CryptographySingleMultiScaling
      crypt
      		 2,389 13,822 5.79×
      CompressionSingleMultiScaling
      jpeg
      		 599.24 4,382 7.31×
      zlib
      		 59.13 536.28 9.07×
      HypervisorSingleMultiScaling
      clock
      		 30,414 218,239 7.18×
      clone
      		 501.58 2,338 4.66×
      context
      		 3,196 31,049 9.71×
      cpu-sched
      		 72.91 736.91 10.11×
      eventfd
      		 36,228 685,907 18.93×
      fault
      		 10,352 86,946 8.40×
      fork
      		 4,232 34,821 8.23×
      getrandom
      		 46,405 328,870 7.09×
      hrtimers
      		 176,851 1,362,560 7.70×
      mprotect
      		 1,205,786 2,649,319 2.20×
      mtx
      		 12,878,677 294,262,318 22.85×
      munmap
      		 2,908 23,961 8.24×
      null
      		 371,161 3,514,926 9.47×
      pipe
      		 1,105,489 4,550,206 4.12×
      priv-instr
      		 626,414 5,268,176 8.41×
      resched
      		 3,528,225 1,584,956 0.45×
      switch
      		 86,247 1,747,117 20.26×
      timermix
      		 240,447 2,251,534 9.36×
      tlb-shootdown
      		 12,097 30,209 2.50×
      tsc
      		 1,049,033 11,411,829 10.88×
      usersyscall
      		 443,024 3,849,728 8.69×
      vdso
      		 86,664,848 652,829,814 7.53×
      vfork
      		 21,550 138,965 6.45×
      x86syscall
      		 4,424,874 42,947,847 9.71×
      yield
      		 8,110,326 8,615,558 1.06×
      zero
      		 2,265,615 18,433,666 8.14×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 15,306 113,813 7.44×
      expmath
      		 2,798 24,454 8.74×
      fma
      		 679,479 6,361,562 9.36×
      fp
      		 124.39 982.46 7.90×
      fractal
      		 5.4 40.6 7.52×
      hyperbolic
      		 2,987 26,847 8.99×
      logmath
      		 4,723 40,710 8.62×
      matrix
      		 4,122 27,880 6.76×
      matrix-3d
      		 763.78 1,759 2.30×
      monte-carlo
      		 171.89 1,546 8.99×
      mpfr
      		 1,200 7,336 6.12×
      powmath
      		 1,665 14,315 8.60×
      trig
      		 1,958 12,842 6.56×
      veccmp
      		 14,244 88,733 6.23×
      vecfp
      		 910.41 7,037 7.73×
      vecmath
      		 2,271 20,188 8.89×
      vecshuf
      		 568.68 3,610 6.35×
      vecwide
      		 27,398 177,520 6.48×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 7.2 50.4 7.00×
      bsearch
      		 237.33 1,710 7.21×
      bubblesort
      		 0.8 4.8 6.00×
      fibsearch
      		 270.55 2,070 7.65×
      heapsort
      		 8.4 59.2 7.05×
      hsearch
      		 4,568 31,666 6.93×
      insertionsort
      		 8 48 6.00×
      malloc
      		 2,032,817 22,160,840 10.90×
      mcontend
      		 156.3 3,186 20.38×
      mergesort
      		 27 217.39 8.05×
      qsort
      		 19 135.8 7.15×
      skiplist
      		 6,068 48,521 8.00×
      tree
      		 1.4 7.2 5.14×
      MemorySingleMultiScaling
      cache
      		 273,573 479,486 1.75×
      cachehammer
      		 541,944 5,444,011 10.05×
      cacheline
      		 47.08 528.58 11.23×
      l1cache
      		 199.07 1,189 5.97×
      memcpy
      		 437.52 2,716 6.21×
      memrate
      		 1.18 4.62 3.92×
      memthrash
      		 105 339.17 3.23×
      ptr-chase
      		 40,746,511 108,429,592 2.66×
      spinmem
      		 254.19 546.09 2.15×
      stream
      		 60.06 2,202 36.66×
      vm
      		 58,468 292,646 5.01×

      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

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

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYAccelerators

      ecs.c4.3xlarge FAQs