ecs.r5.3xlarge by Alibaba Cloud

ecs.r5.3xlarge is a ecs.r5 family (12 vCPUs, 96 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 12 vCPUs, 96 GiB of memory and 0 GB of storage. The pricing starts at 0.1402 USD per hour.
12 vCPU
96 GiB Memory
Spare SCore
8,831
(All-cores)
1,109
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.r5.3xlarge
Description
ecs.r5 family (12 vCPUs, 96 GiB RAM, 0 GB storage)
Family
ecs.r5
Hw Virt
Status
active
Observed At
2026-10-24T00:57:06.613914

Availability

REGION / IDSPOTONDEMAND
Jakarta (ID) / ap-southeast-5
0.1402 USD/h 0.876 USD/h
Beijing (CN) / cn-beijing
- 1.09 USD/h
Shenzhen (CN) / cn-shenzhen
- 1.09 USD/h

Processor

vCPUs
12
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
6
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
192 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
192 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
6 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
8
Scalability
66.67

System Resources and Accelerators

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

      CPU and System Topology

      Server Description

      A memory-optimized x86_64 virtual server featuring a high memory-to-vCPU ratio for memory-intensive database and caching workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.r5.3xlarge is a memory-optimized instance featuring 12 dedicated x86_64 vCPUs and 96.0 GB of RAM, powered by an Intel Xeon 8163 processor running at 2.5 GHz. Built on the KVM hypervisor, this instance provides 8.0 GB of memory per core but lacks local storage and GPU accelerators. Performance benchmarks show a contrast between weak single-core execution, such as in single-threaded gzip compression, and average multi-core capabilities across stress-ng and Geekbench tests. Memory bandwidth remains average for both small and large blocks, though Passmark memory scores are weak. With a baseline network bandwidth of 4 Gbps, this instance is designed for memory-intensive workloads like database operations and Redis caching, where high memory capacity is required and average multi-threaded performance is sufficient.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.47Score
      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) 738,661 ops/sec 1,919,289 ops/sec 0.39 50.00% 50.00% -38.00%
      Redis RPS (pipeline=16, SET) 5,241,776 ops/sec 11,728,058 ops/sec 0.43 20.00% 20.00% -16.00%
      PassMark Memory Mark (composite) 1,791 2,416 0.75 10.00% 10.00% -2.80%
      Memory bandwidth (read, 16 MB ~ L3) 60,767 MB/sec 108,466 MB/sec 0.55 10.00% 10.00% -5.80%
      PassMark single-thread CPU 1,690 Mops/s 2,365 Mops/s 0.71 10.00% 10.00% -3.40%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 950

      Geekbench Multi-Core

      Score: 4,817

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 10,084
      Compression
      		 136,223
      Encryption
      		 4,090
      Extended Instructions
      		 8,899
      Floating Point Maths
      		 15,851
      Integer Maths
      		 29,552
      Physics
      		 1,003
      Prime Numbers
      		 58
      Single Threaded
      		 1,690
      String Sorting
      		 18,079

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1,791
      Database Operations
      		 3,240
      Memory Latency
      		 79
      Memory Read Cached
      		 19,489
      Memory Read Uncached
      		 6,941
      Memory Write
      		 7,448

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 177.64 173.01 0.97×
      bitops
      		 100,457 663,507 6.60×
      branch
      		 122,352 1,109,691 9.07×
      funccall
      		 450.35 2,852 6.33×
      funcret
      		 9,169 79,675 8.69×
      hash
      		 103,870 922,191 8.88×
      intmath
      		 17,781 163,260 9.18×
      nop
      		 151,996 786,416 5.17×
      prime
      		 265,091 1,792,180 6.76×
      rotate
      		 76,725 580,794 7.57×
      str
      		 659,655 5,043,310 7.65×
      wcs
      		 423,344 2,699,515 6.38×
      CryptographySingleMultiScaling
      crypt
      		 1,940 11,345 5.85×
      CompressionSingleMultiScaling
      jpeg
      		 477.07 3,615 7.58×
      zlib
      		 30.73 381.69 12.42×
      HypervisorSingleMultiScaling
      clock
      		 8,686 72,547 8.35×
      clone
      		 395.25 2,116 5.35×
      context
      		 561.79 4,948 8.81×
      cpu-sched
      		 63.6 730.57 11.49×
      eventfd
      		 26,831 352,473 13.14×
      fault
      		 8,657 70,170 8.11×
      fork
      		 2,541 19,657 7.73×
      getrandom
      		 32,406 246,971 7.62×
      hrtimers
      		 873,263 809,314 0.93×
      mprotect
      		 564,531 778,648 1.38×
      mtx
      		 13,000,134 234,659,967 18.05×
      munmap
      		 1,840 15,603 8.48×
      null
      		 52,158 463,232 8.88×
      pipe
      		 421,360 1,699,831 4.03×
      priv-instr
      		 154,498 1,353,290 8.76×
      resched
      		 1,200,366 512,956 0.43×
      switch
      		 136,014 931,001 6.84×
      timermix
      		 113,203 992,318 8.77×
      tlb-shootdown
      		 11,064 23,330 2.11×
      tsc
      		 791,046 6,648,084 8.40×
      usersyscall
      		 100,954 875,222 8.67×
      vdso
      		 64,372,284 680,833,412 10.58×
      vfork
      		 18,534 115,048 6.21×
      x86syscall
      		 578,633 5,058,838 8.74×
      yield
      		 2,809,653 2,878,536 1.02×
      zero
      		 505,090 4,433,044 8.78×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 13,009 101,273 7.78×
      expmath
      		 2,135 19,619 9.19×
      fma
      		 480,113 4,976,538 10.37×
      fp
      		 132 1,181 8.95×
      fractal
      		 4.2 36.6 8.71×
      hyperbolic
      		 2,224 20,856 9.38×
      logmath
      		 3,621 32,748 9.04×
      matrix
      		 2,474 23,180 9.37×
      matrix-3d
      		 522.09 2,151 4.12×
      monte-carlo
      		 32.27 363.95 11.28×
      mpfr
      		 980.59 6,450 6.58×
      powmath
      		 1,265 11,588 9.16×
      trig
      		 1,364 11,219 8.23×
      veccmp
      		 12,336 72,509 5.88×
      vecfp
      		 1,763 13,088 7.42×
      vecmath
      		 1,679 15,892 9.46×
      vecshuf
      		 745.44 4,807 6.45×
      vecwide
      		 45,060 317,682 7.05×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 5.8 40.2 6.93×
      bsearch
      		 197.8 1,355 6.85×
      bubblesort
      		 0.6 2.4 4.00×
      fibsearch
      		 223.34 1,662 7.44×
      heapsort
      		 7 48.2 6.89×
      hsearch
      		 4,065 30,111 7.41×
      insertionsort
      		 6.4 38.4 6.00×
      malloc
      		 1,611,331 15,893,078 9.86×
      mcontend
      		 122.29 2,771 22.66×
      mergesort
      		 21.4 165.99 7.76×
      qsort
      		 15 110.2 7.35×
      skiplist
      		 4,164 35,374 8.49×
      tree
      		 1.2 7.2 6.00×
      MemorySingleMultiScaling
      cache
      		 253,135 415,543 1.64×
      cachehammer
      		 365,292 3,754,971 10.28×
      cacheline
      		 29.48 354.14 12.01×
      l1cache
      		 180.17 1,164 6.46×
      memcpy
      		 303.05 1,833 6.05×
      memrate
      		 0.94 6.6 7.02×
      memthrash
      		 113.05 369.39 3.27×
      ptr-chase
      		 20,008,962 93,087,340 4.65×
      spinmem
      		 201.39 459.55 2.28×
      stream
      		 35.04 2,861 81.65×
      vm
      		 16,230 290,680 17.91×

      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.r5.large 216 GiB0
      ecs.r5.xlarge 432 GiB0
      ecs.r5.2xlarge 864 GiB0
      ecs.r5.4xlarge 16128 GiB0
      ecs.r5.6xlarge 24192 GiB0
      ecs.r5.8xlarge 32256 GiB0
      ecs.r5.16xlarge 64512 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYAccelerators

      ecs.r5.3xlarge FAQs