You can mod your psp to run at 333 GHZ and it makes it run faster for me. Me and all my friends run ours at 333 GHZ, and it is not hacking or overclocking. The PSP was MENT to run at 333 ghz, and so there for the processor was built for that speed, yet Sony decided to clock it down to 222 GHZ so it would save battery life. I have a 2600mAh battery so I don't worry about that.