RetroArch is not an emulator but a frontend that runs emulator “cores” — for PS1, primarily Beetle PSX (from Mednafen). Comparing ePSXe with RetroArch is really comparing two philosophies: a focused, classic standalone emulator versus a unified library system that plays everything.
Where RetroArch wins
- Netplay. RetroArch’s netplay is genuinely developed for online play with friends; ePSXe’s netplay is local-network and experimental (see our netplay guide). For online PS1, RetroArch is the answer.
- One library for everything. If you emulate many systems, RetroArch’s unified interface, playlists and shaders beat juggling a dozen standalone apps. Its shader ecosystem (CRT and upscaling) is also far deeper.
- RetroAchievements. Supported through RetroArch; ePSXe has no equivalent.
- Platforms. RetroArch runs almost everywhere, current builds included — ePSXe’s Linux/Mac builds are from 2016.
Where ePSXe wins
- Simplicity. ePSXe is one program with menus that say what they do. RetroArch’s power comes with a famously steep learning curve and settings that interact in non-obvious ways.
- Featherweight footprint. On an old PC, a standalone emulator from the plugin era starts instantly and asks almost nothing (official recommended: dual-core, 512 MB RAM).
- Android couch play. ePSXe’s paid Android app is a self-contained, no-frontend-needed experience with split-screen multiplayer; RetroArch on Android is powerful but unmistakably a frontend.
- Familiar saves workflow. Straight .mcr files in a folder you can see, copy and back up without frontend abstractions — though RetroArch’s Beetle saves are equally portable once located.
Accuracy note
Beetle PSX aims for hardware-faithful emulation (with a HW variant adding rendering enhancements, including its own PGXP-style options). ePSXe’s plugin model prioritised speed and tweakability in its era. For cycle-faithful behaviour, Beetle is the reference; for a light, direct setup, ePSXe remains coherent — especially on the hardware in our low-end guide.
The verdict
Multi-system library, online play, achievements, shaders: RetroArch. One job — PS1 games on a modest machine with minimum ceremony: ePSXe. Plenty of players run both, and since memory cards are standard files, your games’ saves are not hostage to either choice.