The first thing that grabs your attention in PPSSPP, developed by one of the creators of Dolphin (the most powerful Gamecube and Wii emulator), is the sheer number of configuration options available.
PPSSPP is an emulator for Sony´s first handheld console, the PSP (PlayStation Portable), that is capable of playing the majority games on your laptop or desktop computer, including the increase in resolution that this brings with it.