PSP Go + ARK-5: true CPU overclock beyond 333MHz is now possible and the results are impressive
Hey everyone,
I've been testing the new true overclocking capability on my PSP Go via ARK-5 and wanted to share some real-world results since I couldn't find many concrete benchmarks online for the moment.
*Quick context*
Developer m-cid recently released an open source overclock plugin that bypasses Sony's hard 333MHz CPU limit. It's now integrated directly into ARK-5 (currently in beta). This is not the same as ARK-4's "overclock" setting — that only unlocks 333MHz from Sony's default 222MHz. This is a genuine overclock beyond what Sony ever officially allowed.
*My setup*
PSP Go running ARK-5 (FasterARK PSP Lite package, latest build from 2 days ago), tested at 383MHz. Note: I haven't tested higher frequencies so I can't speak to what the ceiling is on my unit — your mileage may vary.
*Real-world results at 383MHz vs 333MHz baseline*
Wipeout Pulse: was seeing 45–55fps in demanding scenes. Now locked 60fps.
God of War: Ghost of Sparta: was seeing ~32fps just before entering Sparta. Now consistently 5–8fps higher in those same scenes.
Metroid Z (recent rom hack of Metroid: Zero Mission) via gpSP UO Kai (GBA emulator): heat/transparency effect in lava rooms used to drop framerate to ~45fps. Now locked 60fps.
*A few things to know before trying*
— ARK-5 is required. ARK-4 does not support true overclock beyond 333MHz.
— ARK-5 is currently in beta. It's been stable for me but be aware of that.
— Your stable frequency will vary by unit. Use the built-in stress tester to find yours before committing to a value.
*Useful links*
Original plugin source code: github.com/mcidclan/psp-555mhz-plugin
ARK-5 release I used: https://github.com/PSP-Arkfive/FasterARK/releases/tag/latest
Wololo writeup: wololo.net/2026/04/17/true-overclock-is-now-possible-on-psp
Happy Testing!
F