ecs.r8a.4xlarge by Alibaba Cloud

ecs.r8a.4xlarge is a ecs.r8a 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 0.8418 USD per hour.
16 vCPU
128 GiB Memory
Spare SCore
24,599
(All-cores)
3,074
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.r8a.4xlarge
Description
ecs.r8a family (16 vCPUs, 128 GiB RAM, 0 GB storage)
Family
ecs.r8a
Hw Virt
Average Time To Start
12.33
Status
active
Observed At
2026-09-10T16:31:43.607101

Availability

REGION / IDSPOTONDEMAND
Shenzhen (CN) / cn-shenzhen
- 0.8418 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
16
CPU Speed
2.7 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
9T24
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
32 MiB
CPU L3 Cache Total
32 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, ht, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, amd_lbr_v2, nopl, nonstop_tsc, cpuid, extd_apicid, aperfmperf, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, extapic, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, ibs, topoext, perfctr_core, perfctr_llc, mwaitx, ssbd, perfmon_v2, ibrs, ibpb, stibp, ibrs_enhanced, vmmcall, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, avx512_bf16, clzero, irperf, xsaveerptr, rdpru, wbnoinvd, arat, avx512vbmi, umip, pku, ospke, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, avx512_vpopcntdq, rdpid, fsrm
Ecpus
8
Scalability
50

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
      7 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 AMD EPYC processors and high memory density for database and caching workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.r8a.4xlarge is a memory-optimized instance featuring 16 dedicated vCPUs and 16 physical cores powered by an AMD EPYC 9T24 processor running at 2.7 GHz. Equipped with 128.0 GB of RAM, it delivers a high memory-to-vCPU ratio of 8.0 GB per core. The instance lacks local storage and GPU accelerators, utilizing a 7 Gbps baseline network bandwidth. Performance benchmarks indicate strong single-core capabilities, with Geekbench single-core and text processing scores in the top 25%. However, multi-core performance and large-block uncached memory read bandwidth are average and weak, respectively. This hardware profile makes the ecs.r8a.4xlarge suitable for memory-intensive workloads such as database hosting, caching layers, and text processing applications that benefit from dedicated CPU cores and high memory density without requiring local NVMe storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.807Score
      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) 1,466,925 ops/sec 1,917,397 ops/sec 0.765 50.00% 50.00% -12.50%
      Redis RPS (pipeline=16, SET) 11,348,756 ops/sec 11,681,410 ops/sec 0.972 20.00% 20.00% -0.57%
      PassMark Memory Mark (composite) 2,410 2,418 0.997 10.00% 10.00% -0.03%
      Memory bandwidth (read, 16 MB ~ L3) 42,206 MB/sec 108,140 MB/sec 0.39 10.00% 10.00% -8.99%
      PassMark single-thread CPU 2,879 Mops/s 2,365 Mops/s 1.22 10.00% 10.00% +2.01%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,989

      Geekbench Multi-Core

      Score: 11,631

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 26392
      Compression
      		 313088
      Encryption
      		 19273
      Extended Instructions
      		 21881
      Floating Point Maths
      		 42493
      Integer Maths
      		 75967
      Physics
      		 2470
      Prime Numbers
      		 125
      Single Threaded
      		 2879
      String Sorting
      		 45234

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2410
      Database Operations
      		 7854
      Memory Latency
      		 86
      Memory Read Cached
      		 27476
      Memory Read Uncached
      		 24726
      Memory Write
      		 26026

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      ecs.r8a.large 216 GiB0
      ecs.r8a.xlarge 432 GiB0
      ecs.r8a.2xlarge 864 GiB0
      ecs.r8a.8xlarge 32256 GiB0
      ecs.r8a.12xlarge 48384 GiB0
      ecs.r8a.16xlarge 64512 GiB0
      ecs.r8a.24xlarge 96768 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYGPUs

      ecs.r8a.4xlarge FAQs