ecs.c6r.16xlarge by Alibaba Cloud

ecs.c6r.16xlarge is a ecs.c6r family (64 vCPUs, 128 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 64 vCPUs, 128 GiB of memory and 0 GB of storage. The pricing starts at 1.5436 USD per hour.
64 vCPU
128 GiB Memory
Spare SCore
114,421
(All-cores)
1,789
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c6r.16xlarge
Description
ecs.c6r family (64 vCPUs, 128 GiB RAM, 0 GB storage)
Family
ecs.c6r
Hw Virt
Average Time To Start
19
Status
active
Observed At
2026-10-06T01:09:14.196294

Availability

REGION / IDSPOTONDEMAND
Beijing (CN) / cn-beijing
- 1.5436 USD/h
Hangzhou (CN) / cn-hangzhou
- 1.5436 USD/h
Shanghai (CN) / cn-shanghai
- 1.5436 USD/h
Shenzhen (CN) / cn-shenzhen
- 1.5436 USD/h
Frankfurt (DE) / eu-central-1
- 2.1964 USD/h
Singapore (SG) / ap-southeast-1
- 2.6946 USD/h

Processor

vCPUs
64
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Speed
2.8 GHz
CPU Architecture
arm64
CPU Manufacturer
Ampere
CPU Family
Ampere Altra
CPU Model
Ampere Altra
CPU Flags
fp, asimd, evtstrm, aes, pmull, sha1, sha2, crc32, atomics, fphp, asimdhp, cpuid, asimdrdm, lrcpc, dcpop, asimddp, ssbs
Ecpus
63.9
Scalability
99.84

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
      16 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      An arm64 compute-optimized instance delivering high-density multi-core performance and strong database throughput for parallelized workloads.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c6r.16xlarge is a compute-optimized instance featuring 64 dedicated arm64 vCPUs powered by an Ampere Altra processor running at 2.8 GHz, paired with 128.0 GB of RAM. Operating on the KVM hypervisor, this instance provides a 1:2 vCPU-to-RAM ratio, 16 Gbps baseline network bandwidth, and no local storage or GPU accelerators. Benchmark data reveals strong multi-core performance, with a stress-ng multi-core score of 114,420.62 and a highly efficient Redis SET throughput of 84.36 million operations per second. Conversely, single-threaded decompression tasks show weaker performance. This hardware profile offers a cost-efficient, high-density ARM alternative for parallel processing, making it well-suited for multi-threaded workloads, web serving, caching layers, and containerized microservices.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      2.6Score
      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) 8,373,863 ops/sec 1,916,704 ops/sec 4.4 50.00% 50.00% +110.00%
      Redis RPS (pipeline=16, SET) 41,207,814 ops/sec 11,642,227 ops/sec 3.4 20.00% 20.00% +28.00%
      PassMark Memory Mark (composite) 1,966 2,417 0.83 10.00% 10.00% -1.80%
      Memory bandwidth (read, 16 MB ~ L3) 181,830 MB/sec 108,361 MB/sec 1.6 10.00% 10.00% +4.80%
      PassMark single-thread CPU 1,333 Mops/s 2,365 Mops/s 0.54 10.00% 10.00% -6.00%

      Memory Bandwidth

      Compression

      OpenSSL

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 32171
      Compression
      		 355426
      Encryption
      		 10382
      Extended Instructions
      		 47799
      Floating Point Maths
      		 230464
      Integer Maths
      		 303647
      Physics
      		 2300
      Prime Numbers
      		 215
      Single Threaded
      		 1333
      String Sorting
      		 200973

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1966
      Database Operations
      		 4623
      Memory Latency
      		 67
      Memory Read Cached
      		 11390
      Memory Read Uncached
      		 8696
      Memory Write
      		 15027

      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.c6r.large 24 GiB0
      ecs.c6r.xlarge 48 GiB0
      ecs.c6r.2xlarge 816 GiB0
      ecs.c6r.4xlarge 1632 GiB0
      ecs.c6r.8xlarge 3264 GiB0

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      ecs.c6r.16xlarge FAQs