PSPi: Raspberry Pi Zero inside a Sony PSP — The MagPi magazine
The evolution of portable consoles PSP and GameGear. - ppt download
Sony PSP 2000 Star Ocean: First Departure Eternal Edition Blue Handheld System for sale online | eBay
Definition > PSP - PlayStation Portable
Best Buy: Sony PSP-3000 Fun Stuff Bundle 75U060
Sony PSP | WIRED
God of war chains of olympus PSP (222mhz/333mhz vergleich) - YouTube
Best Buy: Sony PSP-3000 Core Pack System (Piano Black) Piano Black 98898
PSP firmware 3.50 enables full 333MHz clockspeed | Engadget
Sony PSP 2000 Star Ocean: First Departure Eternal Edition Blue Handheld System for sale online | eBay
Sony Playstation Portable (PSP) PSP-3000 Piano Black - Game Console | Alzashop.com
I didn't realize that some PSP games have their performance tied to CPU clock speed. (Star Wars Battlefront II default clock speed vs over clocked to 333mhz) : r/PSP
PSPgo packs a 480MHz processor, probably not crossing 333MHz mark