CobaltX vs SteamOS
CobaltX: Arch and KDE Plasma, ready to game from the first boot. SteamOS: Valve’s console-style Linux for handheld gaming. Here is how they differ, and which one suits you.
CobaltX or SteamOS: the short answer
CobaltX and SteamOS share one key trait: both build on Arch Linux. Pick CobaltX if you care most about older hardware and latest software. Pick SteamOS if you care most about beginners and long-term stability.
Quick verdict
- BeginnersSteamOSSteamOS is rated beginner; CobaltX is intermediate.
- Older hardwareCobaltXCobaltX needs about 8 GB of RAM versus 16 GB.
- Latest softwareCobaltXCobaltX uses a rolling model; SteamOS is atomic.
- Long-term stabilitySteamOSSteamOS changes less between upgrades.
Scored from our catalog data (experience level, release model, suggested RAM, intended uses), not from benchmarks. How we build the catalog
Specs compared
Memory figures are editorial planning suggestions, not measured consumption or official minimums. Popularity measures attention, not quality. Missing data is shown as a dash.
| Feature | CobaltX | SteamOS |
|---|---|---|
| Popularity rank (30d) | Not ranked | #7 |
| Popularity trend (30d) | — | Down 16% |
| Latest version | — | 3 (Mar 1, 2022) |
| Based on | Arch Linux | Arch Linux |
| Release model | Rolling | Atomic |
| Desktop | KDE Plasma | Gaming Mode + KDE Plasma |
| Package management | Pacman · AUR (community) | Flatpak (Discover) |
| Init system | systemd | systemd |
| Experience level | Intermediate | Beginner |
| Suggested RAM | 8 GB+ | 16 GB+ |
| Architectures | x86_64 | x86_64 |
| First released | 2026 | 2013 |
| Price | Free | Free |
| Good for | Gaming | Gaming, Immutable systems |
Support and releases
The release we would install today on each, with its support window from endoflife.date, checked Nov 2, 2026.
| Detail | CobaltX | SteamOS |
|---|---|---|
| Release to install | Rolling, always current | 3 |
| Released | — | Mar 1, 2022 |
| Support ends | — | No end date listed |
Key differences
- CobaltX follows a rolling release model; SteamOS is atomic.
- CobaltX ships KDE Plasma; SteamOS ships Gaming Mode + KDE Plasma.
- Software comes from Pacman · AUR (community) on CobaltX and Flatpak (Discover) on SteamOS.
- We suggest about 8 GB of RAM for CobaltX and 16 GB for SteamOS.
- CobaltX is best for intermediate users; SteamOS for beginner users.
CobaltX: strengths and tradeoffs
- game launchers, Wine and performance overlays preinstalled
- linux-zen kernel tuned for desktop responsiveness
- one-click NVIDIA driver install from the Welcome app
Very new, pre-1.0 project with a single maintainer
Full CobaltX profileSteamOS: strengths and tradeoffs
- console-like Gaming Mode
- proton compatibility layer integrated
- image-based updates with fallback
Official support targets specific handhelds
Full SteamOS profileSwitching between CobaltX and SteamOS
From CobaltX to SteamOS
- You will swap Pacman for Flatpak (Discover); package names and install commands differ, so check your must-have apps on SteamOS first.
- You can keep KDE Plasma, which both offer, so your layout and shortcuts mostly carry over.
- SteamOS is atomic: the base system is read-only and updates apply as a whole image you can roll back; most apps come from Flatpak or containers.
- Plan for a bit more memory: we suggest about 16 GB for SteamOS versus 8 GB for CobaltX.
From SteamOS to CobaltX
- You will swap Flatpak (Discover) for Pacman; package names and install commands differ, so check your must-have apps on CobaltX first.
- You can keep KDE Plasma, which both offer, so your layout and shortcuts mostly carry over.
- CobaltX is rolling: updates arrive continuously, so update often and keep backups.
Either way, back up your home folder, then do a clean install; reusing a separate /home partition works but can bring old settings that clash.
CobaltX vs SteamOS: FAQ
Is CobaltX better than SteamOS?
Neither is better for everyone. CobaltX is the stronger pick for older hardware, latest software; SteamOS for beginners, long-term stability.
Which uses less RAM, CobaltX or SteamOS?
CobaltX is lighter: we suggest about 8 GB versus 16 GB. The desktop you choose affects memory use more than the distribution itself.
Is CobaltX based on SteamOS?
No. CobaltX is based on Arch Linux; SteamOS is based on Arch Linux.