The PSP version runs most commercial games at full speed, however some still suffer from minor or severe glitches, and others are very slow. The GP2X version is similar to the PSP one, but typically slower. gpSP requires a GBA BIOS file in order to operate. Due to copyright reasons this BIOS cannot be included with the emulator by Exophase, and users must find it on their own.
To date, gpSP has proven to be the most efficient, compatible, and widely used of all GBA emulators for the PSP and GP2X.
Exophase also has stop working on the psp verson of gpSP and is only now working on the gp2x and pandora (console) versions of gpSP
and any future versions of gpSP will be close source
and the reason for Exophase to close the source is Takka