ecs.u0.c1m8.4xlarge by Alibaba Cloud

ecs.u0.c1m8.4xlarge is a ecs.u0 family (16 vCPUs, 128 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 16 vCPUs, 128 GiB of memory and 0 GB of storage. The last known price was 0.83328 USD per hour.
16 vCPU
128 GiB Memory
Spare SCore
11,726
(All-cores)
1,106
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.u0.c1m8.4xlarge
Description
ecs.u0 family (16 vCPUs, 128 GiB RAM, 0 GB storage)
Family
ecs.u0
Hw Virt
Status
inactive
Observed At
2026-10-28T10:50:48.084237

Availability

REGION / IDSPOTONDEMAND
Dubai (AE) / me-east-1
0.83328 USD/h 1.0416 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
8
CPU Speed
2.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8163
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
1 MiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
33 MiB
CPU L3 Cache Total
33 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, mpx, avx512f, avx512dq, rdseed, adx, smap, avx512cd, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, arat
Ecpus
10.6
Scalability
66.25

System Resources and Accelerators

MEMORY
Memory Amount
128 GiB
Memory Amount Actual
128 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
      3 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A memory-optimized virtual server featuring dedicated Intel Xeon cores and a high memory-to-vCPU ratio for parallel, memory-intensive workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.u0.c1m8.4xlarge is a memory-optimized virtual server featuring 16 dedicated vCPUs on an Intel Xeon 8163 processor and 128.0 GB of RAM. Operating on the KVM hypervisor, this instance provides a high memory-to-core ratio of 8.0 GB per vCPU without local storage or GPU resources. Benchmark data shows weak single-core CPU performance and poor single-threaded compression speeds, but average multi-core capabilities in stress-ng and Geekbench. Memory bandwidth remains average for large blocks, supporting stable performance in Redis SET operations and static web serving. Lacking local storage, it relies on network-attached volumes over a 3 Gbps baseline network. This instance is qualitatively cost-efficient for memory-heavy workloads that benefit from dedicated physical cores but do not demand high single-threaded compute power, making it suitable for database caching, multi-threaded data processing, and general-purpose memory-bound applications.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.54Score
      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) 877,360 ops/sec 1,919,289 ops/sec 0.46 50.00% 50.00% -32.00%
      Redis RPS (pipeline=16, SET) 6,520,081 ops/sec 11,728,058 ops/sec 0.54 20.00% 20.00% -12.00%
      PassMark Memory Mark (composite) 1,749 2,416 0.71 10.00% 10.00% -3.40%
      Memory bandwidth (read, 16 MB ~ L3) 77,351 MB/sec 108,466 MB/sec 0.7 10.00% 10.00% -3.50%
      PassMark single-thread CPU 1,678 Mops/s 2,365 Mops/s 0.71 10.00% 10.00% -3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 926

      Geekbench Multi-Core

      Score: 5,680

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 12,977
      Compression
      		 181,781
      Encryption
      		 5,429
      Extended Instructions
      		 11,856
      Floating Point Maths
      		 21,016
      Integer Maths
      		 39,116
      Physics
      		 1,346
      Prime Numbers
      		 67
      Single Threaded
      		 1,678
      String Sorting
      		 24,199

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1,749
      Database Operations
      		 4,299
      Memory Latency
      		 80
      Memory Read Cached
      		 19,237
      Memory Read Uncached
      		 6,255
      Memory Write
      		 6,729

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 179.98 120.63 0.67×
      bitops
      		 100,307 885,824 8.83×
      branch
      		 121,979 1,472,077 12.07×
      funccall
      		 450.05 3,788 8.42×
      funcret
      		 9,146 105,582 11.54×
      hash
      		 103,613 1,224,870 11.82×
      intmath
      		 17,714 217,268 12.27×
      nop
      		 150,755 1,041,360 6.91×
      prime
      		 263,653 2,365,232 8.97×
      rotate
      		 76,526 765,083 10.00×
      str
      		 629,757 6,623,721 10.52×
      wcs
      		 414,645 3,664,964 8.84×
      CryptographySingleMultiScaling
      crypt
      		 1,933 15,041 7.78×
      CompressionSingleMultiScaling
      jpeg
      		 472.44 4,702 9.95×
      zlib
      		 32.58 532.4 16.34×
      HypervisorSingleMultiScaling
      clock
      		 8,495 86,883 10.23×
      clone
      		 299.53 2,272 7.59×
      context
      		 572.79 6,531 11.40×
      cpu-sched
      		 65.07 1,014 15.59×
      eventfd
      		 25,562 422,605 16.53×
      fault
      		 8,374 74,929 8.95×
      fork
      		 2,230 21,991 9.86×
      getrandom
      		 32,237 327,936 10.17×
      hrtimers
      		 148,426 1,025,061 6.91×
      mprotect
      		 550,305 982,702 1.79×
      mtx
      		 13,459,045 301,515,614 22.40×
      munmap
      		 1,638 17,601 10.75×
      null
      		 51,004 610,751 11.97×
      pipe
      		 290,706 2,137,778 7.35×
      priv-instr
      		 157,293 1,763,256 11.21×
      resched
      		 1,428,859 636,644 0.45×
      switch
      		 49,974 1,134,070 22.69×
      timermix
      		 112,690 1,270,782 11.28×
      tlb-shootdown
      		 6,856 21,787 3.18×
      tsc
      		 788,208 8,808,827 11.18×
      usersyscall
      		 102,787 1,150,458 11.19×
      vdso
      		 64,205,539 912,191,978 14.21×
      vfork
      		 15,772 111,058 7.04×
      x86syscall
      		 563,889 6,746,131 11.96×
      yield
      		 3,587,732 3,660,487 1.02×
      zero
      		 500,740 5,864,061 11.71×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 12,915 131,448 10.18×
      expmath
      		 2,137 25,991 12.16×
      fma
      		 478,250 6,540,096 13.68×
      fp
      		 132 1,575 11.93×
      fractal
      		 4.2 48.6 11.57×
      hyperbolic
      		 2,218 27,560 12.43×
      logmath
      		 3,605 43,398 12.04×
      matrix
      		 2,440 29,359 12.03×
      matrix-3d
      		 508.22 2,824 5.56×
      monte-carlo
      		 31.83 477.16 14.99×
      mpfr
      		 983.71 8,491 8.63×
      powmath
      		 1,256 15,366 12.23×
      trig
      		 1,363 14,862 10.91×
      veccmp
      		 12,281 96,694 7.87×
      vecfp
      		 1,757 17,309 9.85×
      vecmath
      		 1,673 21,056 12.59×
      vecshuf
      		 743.24 6,340 8.53×
      vecwide
      		 44,952 420,833 9.36×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 5.8 53.4 9.21×
      bsearch
      		 197.66 1,827 9.24×
      bubblesort
      		 0.6 3.2 5.33×
      fibsearch
      		 222.94 2,253 10.11×
      heapsort
      		 6.6 65.4 9.91×
      hsearch
      		 4,011 39,175 9.77×
      insertionsort
      		 6.4 51 7.97×
      malloc
      		 1,211,615 14,021,460 11.57×
      mcontend
      		 71.5 2,801 39.18×
      mergesort
      		 21.2 218.79 10.32×
      qsort
      		 15 146.8 9.79×
      skiplist
      		 4,132 47,023 11.38×
      tree
      		 1.2 7.19 5.99×
      MemorySingleMultiScaling
      cache
      		 194,613 385,703 1.98×
      cachehammer
      		 357,057 4,693,658 13.15×
      cacheline
      		 21.15 354.16 16.75×
      l1cache
      		 175.94 1,529 8.69×
      memcpy
      		 302.79 2,426 8.01×
      memrate
      		 0.94 8.72 9.28×
      memthrash
      		 118.73 455.04 3.83×
      ptr-chase
      		 8,049,169 121,156,470 15.05×
      spinmem
      		 171.19 568.34 3.32×
      stream
      		 30.7 4,876 158.82×
      vm
      		 16,089 291,863 18.14×

      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.u0.c1m1.large 22 GiB0
      ecs.u0.c1m2.large 24 GiB0
      ecs.u0.c1m8.large 216 GiB0
      ecs.u0.c1m1.xlarge 44 GiB0

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      ecs.u0.c1m8.4xlarge FAQs