HVPS4 CPX21

HVPS4 CPX21 combines 3 AMD EPYC vCPUs, 4 GB RAM, and fast SSD storage (typically 80–100 GB NVMe/SSD depending on provider configuration) delivered on Hetzner’s CPX21 virtual server line. The platform uses KVM virtualization with shared AMD EPYC 2nd‑generation processors, optimized for strong CPU performance and consistent throughput for web workloads.

Key characteristics:

• 3 vCPU (AMD EPYC, shared, 2 GHz base clock).
• 4 GB RAM, tuned for dynamic web applications and frameworks.
• 80–100 GB SSD/NVMe cloud storage, suitable for multiple sites or medium projects.
• Up to around 5–20 TB outbound traffic, depending on region/plan variant.
• KVM virtualization with full root access and ISO install capability.
• IPv6 support and DDoS protection are typically included in price tiers based on CPX21.

This balance of CPU, RAM, and storage makes HVPS4 CPX21 a strong choice for developers, agencies, and businesses that have outgrown shared hosting but do not yet need a large dedicated server.

Detailed Technical Specifications

This section presents a structured, hosting‑style view of the CPX21 platform used in HVPS4.

Compute Resources

• vCPUs: 3 virtual cores.
• CPU architecture: x86_64, AMD EPYC family.
• CPU allocation: Shared CPU with strong all‑core and single‑core benchmark scores suitable for real‑time web traffic, background jobs, and light parallel workloads.
• Hypervisor: QEMU/KVM virtualization, allowing stable isolation and compatibility with most Linux distributions.

Benchmarks show CPX21 achieving solid overall performance scores for web workloads, with good raw CPU power for the price bracket. This means the instance can comfortably handle PHP‑FPM, Node.js, Python (Django/Flask/FastAPI), Ruby on Rails, and container‑based stacks for small to medium deployments.

Memory

• Total memory: 4 GiB RAM.
• Approximate RAM per vCPU: around 1.3–2.0 GB per vCPU, consistent with the CPX series design.

4 GB RAM is suitable for:

• Multiple PHP‑based sites with a caching layer (OpCache, Redis).
• A single mid‑sized Node.js or Python web app and background workers.
• Small relational databases (e.g., MariaDB/PostgreSQL) with tuned cache parameters.

Storage

• Storage capacity: typically 80 GB SSD on CPX21 baseline, with some variants and listing summaries indicating up to 100 GB NVMe depending on plan and region.
• Storage type: SSD (often NVMe in newer CPX lines), tuned for fast random I/O and low latency.

Storage performance data from benchmark reports indicates strong sequential and random I/O figures, supporting responsive database interactions and quick application deployments. This makes the platform suitable for CMS‑heavy workloads, code deployments, and file‑based caching.

Network & Traffic

• Outbound traffic allowance: around 20 TB/month on some CPX21 listings, with others advertising about 5 TB bandwidth, depending on the reseller’s pricing tier and region.
• Virtualization networking: KVM‑based virtual NICs optimized for cloud environments.
• IPv4 and IPv6: at least one IPv4 address plus IPv6 support on typical CPX21‑based plans.
• DDoS protection: listed as included for CPX21 virtual servers on multiple providers.

This network profile is more than enough for mid‑traffic production sites, APIs, and SaaS applications serving tens of thousands of monthly visitors, assuming reasonable content optimization and caching.

Virtualization & Access

• Virtualization type: KVM, full virtualization.
• Root access: full root rights for OS‑level control, package management, firewall rules, and container orchestration.
• ISO installation: ability to install custom operating systems from ISO images, where supported by the control panel.
• SSH access: secure SSH login for management, automation, CI/CD deployment, and configuration.

These capabilities allow you to treat HVPS4 CPX21 like a flexible virtual data‑center node, ready for advanced setups such as Docker, Kubernetes agents, reverse proxy clusters, and VPN gateways.

Operating Systems & Software Stack

HVPS4 CPX21 supports a wide range of Linux distributions common in modern hosting scenarios.

Supported Operating Systems

Typical OS options on CPX21‑based VPS plans include:

• CentOS (and successors such as AlmaLinux, Rocky Linux).
• Debian (multiple LTS and stable branches).
• Ubuntu (including LTS versions suitable for long‑term production hosting).
• Fedora (for users who prefer a faster‑moving distribution).
• AlmaLinux and Rocky Linux are drop‑in enterprise‑grade alternatives after CentOS changes.

Some providers also allow installation from custom ISO images, enabling deployment of less common or specialized distributions.

Typical Hosting Stack Compatibility

On HVPS4 CPX21, you can deploy:

• Web servers: Nginx, Apache, Caddy.
• Application runtimes: PHP‑FPM, Node.js, Python (uWSGI/Gunicorn), Ruby (Puma/Passenger).
• Databases: MySQL/MariaDB, PostgreSQL, Redis, and  MongoDB for small to medium workloads.
• Control panels: Plesk, cPanel/WHM (where compatible and licensed separately), or open‑source panels like HestiaCP or CyberPanel.

The 3 vCPU / 4 GB RAM profile is sufficient for hosting one primary production application plus several smaller side projects, especially when a reverse proxy and proper caching are configured.

Use Cases and Recommended Scenarios

HVPS4 CPX21 is built to sit in the performance‑focused entry‑mid tier of VPS offerings, where cost efficiency and CPU performance both matter.

Ideal Use Cases

• Business websites and CMS
  • WordPress with WooCommerce, Joomla, Drupal, or similar CMS stacks.
  • Multiple medium‑traffic sites with shared database and caching servers.
• Web applications and APIs
  • REST or GraphQL APIs built with Node.js, Laravel, Django, or FastAPI.
  • Microservices or lightweight service clusters using Docker containers.
• Development and staging environments
  • CI/CD runners, integration testing nodes, and staging servers.
  • Application demo environments for clients or internal teams.
• Lightweight data services
  • Small to medium PostgreSQL or MariaDB databases.
  • Redis or Memcached for caching and session storage.
• Regional presence and latency optimization
  • Deploying in locations such as Germany, Finland, the USA, or Singapore (depending on CPX21 region availability) to optimize latency for specific user bases.

When HVPS4 CPX21 Is a Good Fit

Choose HVPS4 CPX21 if:

• You have clearly outgrown shared hosting and need dedicated resources.
• You want predictable CPU performance on AMD EPYC hardware.
• You need 4 GB RAM with enough CPU to handle spikes and background processing without serious throttling.
• Your application fits into 80–100 GB SSD storage with room for logs and backups.

For heavy high‑traffic analytics workloads, large databases, or many simultaneous CPU‑bound tasks, you may want to scale up to larger CPX plans like CPX31 or CPX41 in the same family.

Pricing, Regions, and Service Characteristics

While pricing can vary per reseller or integrator, CPX21 itself is positioned as a cost‑efficient cloud instance in the Hetzner ecosystem.

Typical Pricing Level

External listings place CPX21 around:

• Roughly between 7 and 9 EUR per month (or equivalent), depending on billing region and tax.
• Hourly pricing of about 0.0112 EUR in several European regions and slightly higher in the US or Singapore locations.

This makes HVPS4 CPX21 attractive when you want a balance between true cloud flexibility and low‑to‑medium monthly cost.

Regional Availability

Data centers and regions where CPX21 class servers appear include:

• Germany (e.g., Nuremberg / Falkenstein regions).
• Finland (e.g., Tuusula region).
• USA (e.g., Ashburn, Hillsboro).
• Singapore (Asia presence).

Access to multiple regions allows you to deploy HVPS4 CPX21 close to your primary audience or to design multi‑region redundancy architectures.

Service & Platform Features

Plan descriptions for CPX21‑based virtual servers typically include:

• DDoS protection at the network edge is included in the plan.
• One primary IPv4 address plus a/64 IPv6 range.
• KVM virtualization with full root access.
• Ability to reinstall and switch OS via the control panel.
• Optional snapshots, firewalls, and SSH key‑based access.

These features are standard expectations for modern cloud VPS hosting and are well supported by the CPX21 infrastructure.

Example Workload Scenarios

To clarify what HVPS4 CPX21 can support, here are illustrative scenarios.

1. Mid‑sized WordPress + WooCommerce shop
   • 20–40 plugins, optimized theme, object caching via Redis.
   • Peak traffic of several hundred concurrent users during promotions.
   • Uses Nginx reverse proxy, PHP‑FPM, and MariaDB on the same server.
   • HVPS4 CPX21 provides enough CPU and RAM to sustain page load times under a second with proper caching and optimization.
2. API‑first SaaS MVP
   • Backend: Node.js or Laravel API, frontend: separate SPA or mobile apps.
   • Background jobs using a worker queue (e.g., Redis + queue worker).
   • 3 vCPU cores allow separate processes for web, worker, and database or reverse proxy.
3. Developer team staging server
   • Hosts multiple staging environments in containers.
   • CI/CD pipeline deploys to HVPS4 CPX21 after each merge.
   • 4 GB RAM is sufficient to run multiple containers with moderate concurrency.

FAQs 

What are the exact hardware resources of HVPS4 CPX21?

HVPS4 CPX21 is based on a CPX21 virtual server configuration that provides 3 vCPU cores on AMD EPYC 2nd‑generation processors, 4 GB RAM, and around 80–100 GB of SSD or NVMe storage, depending on plan variant. The CPU is shared but tuned for high performance, making it suitable for production workloads rather than only development or testing.

Which operating systems can I install on this VPS?

You can install major Linux distributions such as CentOS, Debian, Ubuntu, Fedora, AlmaLinux, and Rocky Linux, with many providers also offering custom ISO installation for more specialized systems. This broad OS support means HVPS4 CPX21 can host most open‑source stacks, control panels, and application frameworks without compatibility issues.

Is HVPS4 CPX21 suitable for hosting multiple websites?

Yes, the 3 vCPU and 4 GB RAM profile is well‑suited to hosting several small to medium websites, especially when using a control panel and caching mechanisms. With around 80–100 GB SSD storage and multi‑terabyte traffic quotas, you have sufficient capacity for code, static assets, databases, and logs for multiple typical sites.

What kind of network bandwidth and protection does it include?

CPX21‑based VPS plans usually include between 5 TB and about 20 TB of monthly outbound traffic, plus incoming traffic that is often unmetered, with exact limits varying by provider and region. DDoS protection and IPv6 support are typically bundled, ensuring both resiliency and modern IP addressing capability out of the box.

How does HVPS4 CPX21 compare to other plans in the same family?

Within the CPX family, CPX21 sits above entry‑level options (such as CPX11/CPX12) by offering more CPU power and RAM, while still priced significantly lower than larger instances like CPX31 or CPX41. This makes it a strong middle‑tier choice when you need better performance than basic VPS offerings but do not yet require the higher costs of large multi‑core plans.