I am currently evaluating the performance of Ubuntu on a legacy Toshiba NB305 powered by an Intel Atom N450. While this architecture is aging, I’ve managed to achieve a highly efficient idle state with a memory footprint of approximately 547MB.
System Configuration
Device: Toshiba NB305 (Netbook)
CPU: Intel Atom N450 (1 Core, 2 Threads)
RAM: 2GB DDR2
OS: Ubuntu 20.04.6 LTS
Kernel: 5.4.0-216-generic
Current Statistics (htop)
Based on the attached monitoring, the system maintains stability with minimal background overhead. Even with a modern desktop environment, the resource management remains lean:
Memory Usage: 547MB / 1.92GB
Uptime: 7 minutes (Idle baseline)
Process Load: Minimal active threads on Core 1; Core 2 in deep sleep/low-priority state.
Observations
The responsiveness of the GNOME Shell on this specific hardware has improved significantly after targeted optimizations. Despite the low-power nature of the Intel Atom series, the scheduler handles basic tasks with surprising fluidity under the current configuration.
I am interested to hear if anyone else in the community is still maintaining these legacy Atom devices and if there are further kernel-level tweaks recommended for reducing the footprint even further without moving to a lighter DE like Xfce or LXQt, I would also be interested to hear the experience of users who eventually migrated to those environments on similar hardware.
Note: The wallpaper shown in the screenshot is from Ubuntu 22.04. I am currently running Ubuntu 20.04 but chose the Jammy Jellyfish wallpaper because I like its design.