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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteFor an older or modestly equipped PC, the answer depends on which desktop edition you mean. Ubuntu Desktop 26.04 LTS lists 6 GB of RAM for a comfortable experience, while Linux Mint 22.3 lists 2 GB minimum and 4 GB recommended—and Mint says its Xfce edition uses fewer resources than Cinnamon. That makes Mint Xfce worth trying, but it does not mean Mint uniquely took over a role Ubuntu abandoned: Canonical still points lower-spec users to Ubuntu flavors such as Xubuntu and Lubuntu.
What “Ubuntu stopped being lightweight” gets right—and wrong
The headline captures a real change in expectations, but it overstates the history if read literally. Canonical’s Ubuntu Desktop 26.04 LTS guidance is for a comfortable experience, not a minimum installation threshold. Canonical says the desktop may install below those specifications and directs people with lower-spec systems toward flavors including Xubuntu and Lubuntu. Ubuntu therefore still has lighter desktop options; the default Ubuntu Desktop is not the same thing as every Ubuntu flavor.
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There is historical context, but it is not a like-for-like comparison: Canonical’s release notes for Ubuntu Desktop 11.10 listed 384 MB of minimum memory in 2011. That older minimum and today’s comfortable-use guidance measure different things, so they do not prove a measured decline in speed or a continuous trend across releases.
How the current published requirements compare
The figures below are vendor-published guidance for specific releases, not results from an independent test on identical computers. Ubuntu’s figure describes comfortable use; Mint distinguishes a minimum from a recommended amount.
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| System and release | Memory guidance | Storage guidance | What the figures mean |
|---|---|---|---|
| Ubuntu Desktop 26.04 LTS | 6 GB RAM | 25 GB free | Canonical’s comfortable-use guidance; installation may be possible below it. Ubuntu 26.04 LTS release notes |
| Linux Mint 22.3 | 2 GB minimum; 4 GB recommended | 20 GB minimum; 100 GB recommended | Linux Mint’s published requirements. Its download page describes Xfce as lighter on resource use than Cinnamon. Mint 22.3 release announcement; Mint editions and download page |
These requirements do not establish that Mint runs faster than Ubuntu on a given PC. The official pages do not report a controlled, same-hardware benchmark of current Ubuntu Desktop and Mint editions. The desktop edition, browser workload, applications, graphics hardware, drivers and storage all influence how responsive a computer feels.
Which edition should you try on an older computer?
Choose Mint Xfce if you want Mint with a lighter desktop
Linux Mint offers Cinnamon, MATE and Xfce editions. Mint’s own download page says Xfce uses fewer resources than Cinnamon, while supporting fewer features. If you want Mint and are trying to keep desktop demands modest, Xfce is the relevant edition to test—not an unspecified “Mint” comparison.
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Choose Xubuntu or Lubuntu if you want to stay with Ubuntu
Canonical recommends Ubuntu flavors such as Xubuntu and Lubuntu for lower-spec computers and notes 2 GB RAM or more for those examples. These are separate Ubuntu flavors, not the default Ubuntu Desktop. Check the release notes for the particular flavor and release you intend to install; the Ubuntu Desktop 26.04 LTS figures above should not be assumed to describe every flavor.
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If you want Ubuntu Desktop’s default environment, use its 26.04 LTS comfortable-use guidance as a planning reference: a 2 GHz dual-core processor, 6 GB RAM and 25 GB of free storage. It is not a promise of identical performance across machines, nor a hard bar below which installation cannot work.
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Support horizon is part of the choice
Support dates depend on the exact release, not just whether the system is Ubuntu or Mint. Canonical lists Ubuntu 26.04 LTS support through April 2031. Linux Mint lists version 22.3, based on Ubuntu Noble, through April 2029; Mint 21.x, based on Ubuntu Jammy, is listed through April 2027. The Mint dates are from its live release table, checked October 7, 2026, so consult that table when choosing a release.
When boot and hardware compatibility matter more than the desktop
A machine that cannot boot an installer or lacks working Wi-Fi is not a useful candidate, however light its desktop may be. Mint provides optional HWE (Hardware Enablement) ISO images with newer kernels to improve compatibility with newer hardware. Mint warns that proprietary drivers and third-party modules may have limited support with those kernels, and recommends trying an HWE ISO if the regular image does not boot.
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Linux Mint’s HWE guidance explains the option and its caveats. A newer kernel may help with device support; it is not a general promise of better performance.
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Test the computer from live USB before installing
Ubuntu’s installation tutorial documents booting from a USB installer and trying Ubuntu without installing. A live session is also a practical way to check whether a candidate desktop recognizes the hardware before you commit. Make a bootable USB for each candidate you want to test, then boot it and check the devices and tasks you rely on.
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- Live Boot: Simply plug the USB drive into your computer, select the USB drive as your boot device, and experience Linux Mint without installation. This allows you to test the OS and its features before making any changes to your system.
- Install Option: Once you've tested and decided to keep Linux Mint, you can easily install it on your computer directly from the USB drive.
- Pre-installed software like LibreOffice for office tasks, a capable web browser (Firefox), email client (Thunderbird), and multimedia tools. This minimizes the need for additional downloads, saving you time and effort.
- Resource Efficiency: Designed to run efficiently on a variety of hardware configurations. It demands fewer system resources compared to some other operating systems, making it an excellent choice for older computers or devices with limited hardware specifications.
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- Download the installer image for the exact release and edition you want to evaluate.
- Create bootable USB media and use the computer’s boot menu or firmware settings to start from it. Follow the distribution’s current installation guidance.
- Choose the option to try the system without installing, where offered.
- Check graphics and display resolution, Wi-Fi, audio, suspend and resume, and the applications you expect to use.
- If a Mint regular image will not boot on newer hardware, try its HWE image and review Mint’s driver and module caveats.
A live session can expose compatibility problems, but it does not guarantee the same performance as an installed system. Installation, updates, storage, drivers and your everyday workload can change the experience.
Ubuntu’s USB workflow is documented in its desktop installation tutorial.
Bottom line for an older PC
Start by naming the edition, not just the distribution. Try Mint Xfce if you want Mint’s lighter desktop, and compare it with Xubuntu or Lubuntu if you want an Ubuntu flavor aimed at lower-spec systems. Use live USB sessions to check the hardware you actually own. The published requirements help narrow the shortlist, but without controlled testing on the same computer, there is no evidence-based universal winner between these choices.
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