Omarchy and CachyOS are both “Arch, but I do not want to start from pacstrap.” That is where the similarity ends. Omarchy is an omakase developer desktop: Hyprland, now Quickshell in Omarchy 4 Quattro, DHH’s defaults, rolling with a product-shaped update menu. CachyOS is a performance-minded Arch derivative: custom repos, tuned kernels (BORE and friends), and you pick KDE, GNOME, Hyprland, or something else at install time.

I am not going to paste someone else’s CS2 overlay and call it science. Scheduler wins are workload- and hardware-specific. What I can do is tell you which project will fight you, which one matches a homelab-plus-gaming box, and when “just install Arch” is still the adult option.

Already on Omarchy? Practical posts: nomodeset ISO, Bibata cursor, Resolve. Comparing Omarchy to Fedora instead: Omarchy 4 Quattro vs Fedora 44.

Philosophy in one paragraph each

Omarchy decides for you. Tiling, keybinds, theming, a shell that is now one process instead of Waybar + Walker + Mako + hyprlock. Pacman is how 4.x ships internals. You join their desktop. Plugins and shell.json exist so you can extend it, but fighting the rice is swimming upstream. Dual-boot and a smaller ISO showed up in Quattro because they want this on a real workstation, not a ricer’s VM.

CachyOS decides the packages and kernel, not your entire UX. The installer (calamares-style, familiar) offers desktop environments. The value is the repo: optimized builds, extra kernels, hardware enablement. You can have a boring KDE session that happens to run a Cachy kernel. You can also install Hyprland and rice it yourself — at which point you have Cachy’s packages and your config, not Omarchy’s product.

If you want “Arch Wiki plus my dotfiles,” neither is required. If you want “boot into a taste,” pick Omarchy. If you want “boot into Arch with a fast kernel and a GUI installer,” pick CachyOS.

Install and first update

CachyOS: pick DE, bootloader, NVIDIA proprietary or Mesa, maybe a filesystem. It feels like a traditional distro installer with extra kernel checkboxes. First update is pacman + their mirrors. When something breaks, the community answer is often “switch kernel” or “it’s Arch, rollback the package.”

Omarchy: fewer DE choices (you came for their Hyprland). NVIDIA live ISO pain is documented because Hyprland + NVIDIA is a known combo — Safe Graphics. First update is their Update menu / pacman underneath. When something breaks, the answer may be “restart the shell” or “wait for Omarchy’s next point release,” because the desktop is the distro.

What to try: install both in VMs (nested GPU will not tell you NVIDIA truth) for installer UX only, then put the winner on metal for GPU.

Kernels, gaming, and the benchmark trap

CachyOS exists because people want those kernels and -O3-ish package builds. Some titles feel smoother. Some are GPU-bound and will not care. Some regressions show up as weird 1% lows on one game and nowhere else. If gaming is the primary reason you are on Linux, CachyOS (or Bazzite, or Proton on Fedora) is the more on-the-nose choice. Omarchy users game just fine — Proton is Proton — but Omarchy is not a gaming distro with a kernel menu.

Omarchy on a Cachy kernel is a mashup people talk about on Reddit. It is unsupported by either project the moment you glue them. Fun for a spare SSD. Not what I would ship as “the family PC.”

What to try on metal: your actual library, same Proton-GE version, same fullscreen settings, your notes. If you cannot feel a difference in the games you play, do not keep a second OS for a kernel.

Development workflow

Omarchy wants to be the agentic / terminal / editor workstation. Quattro put more of that in the bar. Installing extra IDEs is user-local tarballs or pacman — Antigravity is the tarball pattern. AUR works like Arch because it is Arch.

CachyOS is also Arch: same AUR, same base-devel. KDE or GNOME may be nicer if you live in JetBrains GUIs and hate tiling. Hyprland on Cachy is your Hyprland; Omarchy’s Hyprland is theirs.

Fedora still wins if your day job is rpm/ostree/CoreOS. Arch-shaped desktops win if your day job is “clone it and cargo build.”

Maintenance and support surface

Both are rolling. Both can leave you at a TTY. CachyOS’s extra repos mean an extra failure domain (their build pipeline vs Arch’s). Omarchy’s extra failure domain is Quickshell + their packaging of the desktop. Arch vanilla has neither extra — and neither installer niceties.

Homelab servers should not be either of these. Rocky or CoreOS belong on the NUC. Desktops can be rolling.

Who should use which

Choose Omarchy if: you want a complete Hyprland product, you like Quattro’s shell direction, you are fine with someone else’s keybinds as default, coding/agents/tiling is the point, gaming is extra.

Choose CachyOS if: you want installer + kernel options, you care about tuned packages, you want KDE/GNOME or tiling, gaming/creative CPU load is a reason you tried “not Fedora,” you like Arch but hate archinstall politics.

Choose neither (vanilla Arch or Fedora) if: you need a specific Wiki-only setup, you want six-month releases (Fedora 44), or you are still learning pacman — Fedora or Mint will teach less pain.

Choose both: almost never on one disk. Dual-boot if you are reviewing. Otherwise pick a daily driver and stop collecting ISOs.

Migration notes

Omarchy → CachyOS: backup ~, reinstall, do not expect Quickshell configs to mean anything on KDE.

CachyOS Hyprland → Omarchy: you will throw away rice. That is the admission price.

Windows dual-boot: both can do it; verify firmware NVRAM. Omarchy 4 called out dual-boot in the release. Still clone the disk first.

Wrap-up

Omarchy is a desktop. CachyOS is an Arch with a performance shop attached. If you describe your ideal machine as “DHH’s workstation,” you already know. If you describe it as “KDE but the kernel is spicy,” you already know. If you describe it as “I need the fastest Cyberpunk,” measure it yourself on your GPU — and consider that a gaming image (or Windows) may still be the boring winner.

More Omarchy context: Omarchy vs Windows 11. More Fedora context: Fedora 44 XFCE.

Best regards,

The Linux IT Guy