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Desktop PC Upgrade Services in Kallithea, Athens

Is your desktop computer running slowly or no longer meeting your needs?

Net On Cosmos | PCW.GR provides Microsoft Windows desktop computer upgrade services for home users, freelancers, and small businesses.

Before investing in a new computer, it’s worth considering whether a targeted hardware upgrade can significantly improve performance and extend the lifespan of your existing system.

Every computer is assessed individually to determine which upgrades are supported and whether the expected performance improvement justifies the upgrade cost.

When should you consider a PC upgrade?

An upgrade may be beneficial if your desktop computer:

  • Takes a long time to boot into Microsoft Windows.
  • Opens applications and files slowly.
  • Becomes unresponsive when running multiple applications simultaneously.
  • Has limited storage capacity or insufficient RAM.
  • Still uses a traditional mechanical HDD.
  • No longer delivers the performance required for gaming or professional applications.
  • No longer meets your day-to-day or business requirements.
Desktop PC upgrade services

Depending on your system’s configuration and hardware compatibility, we provide:

  • Replacing an HDD with a SATA SSD or NVMe SSD.
  • RAM upgrades.
  • Graphics card replacement.
  • Power supply replacement.
  • Cooling system replacement or improvement.
HDD to SSD Upgrade: The Most Effective Upgrade for a Desktop Computer

Replacing a traditional HDD with an SSD is usually one of the most effective upgrades that can be performed on a desktop computer.

It can significantly reduce Microsoft Windows boot times, speed up application and file loading, and greatly improve the overall responsiveness of your system.

If the motherboard supports it, an NVMe SSD can be installed, offering considerably higher performance than a conventional SATA SSD. However, for older systems, a SATA SSD often provides a more cost-effective and balanced upgrade.

Disk Cloning or a Clean Windows Installation?

If your existing drive and operating system are in good condition, your data can be cloned directly to the new SSD or NVMe drive.

Disk cloning preserves your installed Microsoft Windows operating system, applications, personal files, and most system settings.

If the existing installation is unstable, infected with malware, or cannot be migrated safely, we may recommend performing a clean installation of Microsoft Windows and transferring your personal files.

RAM Upgrade

Increasing your system’s RAM can significantly improve performance when running multiple applications, numerous browser tabs, or demanding professional software.

Before performing any RAM upgrade, we check the memory type, available slots, maximum supported capacity, and compatibility with the existing memory modules.

Graphics Card and Power Supply Replacement

Replacing the graphics card can significantly improve performance in games, CAD software, image editing, video editing, and other demanding applications.

Before carrying out any hardware replacement, we verify motherboard compatibility, available case space, power supply capacity, cooling requirements, and the expected performance benefits.

If the new graphics card requires more power or different power connectors, replacing the existing power supply may also be necessary.

What’s Included in the Desktop PC Upgrade Service?

Depending on the type of upgrade required, the service may include:

  • Initial system inspection and, where required, internal cleaning.
  • Hardware compatibility assessment.
  • Recommendations for the most suitable upgrade options.
  • Installation and configuration of the new hardware components.
  • Disk cloning or Microsoft Windows installation, where required.
  • Installation of drivers and all necessary updates.
  • Testing to verify correct operation, system stability, and operating temperatures.

We recommend upgrading your computer only when it provides a meaningful performance improvement relative to the overall cost.

How Long Does a Desktop Computer Upgrade Take?

Most SSD and RAM upgrades can usually be completed within one business day, depending on hardware availability, the condition of the computer, and the amount of data that needs to be transferred.

Large data migrations, clean Microsoft Windows installations, or more complex hardware upgrades may require additional time.

Why Choose Net On Cosmos | PCW.GR?
  • Professional experience in repairing and upgrading Microsoft Windows computers since 1996.
  • Comprehensive compatibility checks before selecting hardware components.
  • Upgrade recommendations based on real performance gains.
  • Disk cloning whenever it is technically feasible.
  • System stability and functionality testing after every upgrade.
  • Transparent pricing before any work begins.
  • All work is carried out at our workshop in Kallithea, Athens.
Would you like to upgrade your desktop PC?

Contact us and describe your desktop computer and your requirements.

You are also welcome to bring your desktop computer to our workshop at 100 Arapaki Street, Kallithea, where we can assess its current configuration and upgrade possibilities.

After the initial assessment, we will recommend the most suitable upgrade options, explain the expected benefits, and provide you with a detailed quote before any work begins.