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ecs.r5.4xlarge by Alibaba Cloud

ecs.r5.4xlarge is a ecs.r5 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 pricing starts at 0.1986 USD per hour.
16 vCPU
128 GiB Memory
Spare SCore
11726
(All-cores)
1107
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.r5.4xlarge
Description
ecs.r5 family (16 vCPUs, 128 GiB RAM, 0 GB storage)
Family
ecs.r5
Hw Virt
Status
active
Observed At
2026-07-28T18:45:17.738478

Availability

REGION / IDSPOTONDEMAND
Jakarta (ID) / ap-southeast-5
0.1986 USD/h 1.168 USD/h
Beijing (CN) / cn-beijing
- 1.45 USD/h
Shenzhen (CN) / cn-shenzhen
- 1.45 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
16
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
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 memory-optimized virtual server featuring a high RAM-to-vCPU ratio for memory-intensive enterprise applications and database workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.r5.4xlarge is a memory-optimized virtual server featuring 16 dedicated Intel Xeon 8163 vCPUs running at 2.5 GHz and 128.0 GB of RAM. Operating on the KVM hypervisor with an x86_64 architecture, this instance provides a high memory-to-vCPU ratio of 8 GB per core, though it lacks local storage and GPU accelerators. Performance benchmarks show average multi-core CPU and memory bandwidth capabilities, contrasted by weaker single-core and single-threaded processing speeds. With a baseline network bandwidth of 5 Gbps, the ecs.r5.4xlarge is qualitatively cost-efficient for memory-heavy workloads that do not demand extreme single-thread performance. It is best suited for caching systems, relational databases, and multi-threaded enterprise applications requiring substantial memory capacity.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.583Score
      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) 954,641 ops/sec 1,896,415 ops/sec 0.503 50.00% 50.00% -29.10%
      Redis RPS (pipeline=16, SET) 6,757,819 ops/sec 11,539,523 ops/sec 0.586 20.00% 20.00% -10.10%
      PassMark Memory Mark (composite) 1,780 2,411 0.738 10.00% 10.00% -2.99%
      Memory bandwidth (read, 16 MB ~ L3) 83,476 MB/sec 107,368 MB/sec 0.777 10.00% 10.00% -2.49%
      PassMark single-thread CPU 1,681 Mops/s 2,363 Mops/s 0.711 10.00% 10.00% -3.35%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 928

      Geekbench Multi-Core

      Score: 5,773

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 13025
      Compression
      		 180666
      Encryption
      		 5439
      Extended Instructions
      		 11872
      Floating Point Maths
      		 21050
      Integer Maths
      		 39227
      Physics
      		 1360
      Prime Numbers
      		 75
      Single Threaded
      		 1681
      String Sorting
      		 23743

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1780
      Database Operations
      		 4298
      Memory Latency
      		 80
      Memory Read Cached
      		 19477
      Memory Read Uncached
      		 6501
      Memory Write
      		 7083

      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.r5.large 216 GiB0
      ecs.r5.xlarge 432 GiB0
      ecs.r5.2xlarge 864 GiB0
      ecs.r5.3xlarge 1296 GiB0
      ecs.r5.6xlarge 24192 GiB0
      ecs.r5.8xlarge 32256 GiB0
      ecs.r5.16xlarge 64512 GiB0

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      ecs.r5.4xlarge FAQs