cax21 by Hetzner Cloud

cax21 is a CAX21 server offered by Hetzner Cloud with 4 vCPUs, 8 GiB of memory and 80 GB of storage. The pricing starts at 0.0191 USD per hour.
4 vCPU
8 GiB Memory
80 GB Storage
Spare SCore
7,236
(All-cores)
1,805
(Single-core)

Specifications

Server Metadata

Vendor ID
hcloud
Server ID
93
Name
cax21
Description
CAX21
Family
cax
Hw Virt
Average Time To Start
19
Status
active
Observed At
2026-09-29T10:22:31.078614Z

Availability

REGION / IDSPOTONDEMAND
Nuremberg (DE) / nbg1-dc3
- 0.0191 USD/h
Helsinki (FI) / hel1-dc2
- 0.0191 USD/h
Falkenstein (DE) / fsn1-dc14
- 0.0191 USD/h

Processor

vCPUs
4
Hypervisor
QEMU
CPU Allocation
Shared
CPU Cores
4
CPU Speed
2 GHz
CPU Architecture
arm64
CPU Manufacturer
Ampere
CPU Family
Ampere Altra
CPU Model
Neoverse-N1
CPU Flags
fp, asimd, evtstrm, aes, pmull, sha1, sha2, crc32, atomics, fphp, asimdhp, cpuid, asimdrdm, lrcpc, dcpop, asimddp, ssbs
Ecpus
4
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
8 GiB
Memory Amount Actual
8 GiB
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    80 GB
    Storage Type
    nvme ssd
    Storages
      NETWORK
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      20480 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      An arm64 virtual server with shared Ampere Altra cores and NVMe storage, designed for lightweight development and basic web utility workloads.

      Compute OptimizedBurstable & Budget

      Hetzner Cloud cax21 is an arm64 virtual server featuring 4 shared vCPUs powered by an Ampere Altra Neoverse-N1 processor running at 2.0 GHz. It is equipped with 8.0 GB of RAM, an 80 GB NVMe SSD, and runs on the QEMU hypervisor. Benchmark data shows average CPU performance in stress-ng tests, but reveals limitations in memory bandwidth and cryptographic operations, which both rank in the weak to poor categories. With a 1:2 vCPU-to-RAM ratio, this instance offers a cost-effective entry point for arm64 development, basic web serving, and lightweight database tasks. However, it is less suitable for memory-intensive workloads or high-throughput applications due to shared CPU allocation and restricted memory performance.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.294Score
      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) 468,706 ops/sec 1,919,696 ops/sec 0.244 50.00% 50.00% -50.60%
      Redis RPS (pipeline=16, SET) 2,838,262 ops/sec 11,736,081 ops/sec 0.242 20.00% 20.00% -24.70%
      PassMark Memory Mark (composite) 1,087 2,418 0.45 10.00% 10.00% -7.67%
      Memory bandwidth (read, 16 MB ~ L3) 40,865 MB/sec 108,260 MB/sec 0.377 10.00% 10.00% -9.29%
      PassMark single-thread CPU 1,327 Mops/s 2,365 Mops/s 0.561 10.00% 10.00% -5.62%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,041

      Geekbench Multi-Core

      Score: 3,354

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 3188
      Compression
      		 21848
      Encryption
      		 647
      Extended Instructions
      		 2964
      Floating Point Maths
      		 14300
      Integer Maths
      		 18797
      Physics
      		 642
      Prime Numbers
      		 35
      Single Threaded
      		 1327
      String Sorting
      		 13552

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1087
      Database Operations
      		 2797
      Memory Latency
      		 73
      Memory Read Cached
      		 11346
      Memory Read Uncached
      		 8802
      Memory Write
      		 14915

      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

      PostgreSQL heavy read-only throughput

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      cax11 24 GiB0
      cax31 816 GiB0
      cax41 1631 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYGPUs

      cax21 FAQs