Zero difference. Both models play the exact same UMD (Universal Media Disc) game library.
| Feature | PSP-1000 (Fat) | PSP-3000 (Brite) |
|---|---|---|
| Screen | 4.3" 480x272, 60 Hz, ghosting | 4.3" 480x272, 60 Hz, anti-glare, 5x contrast, wider gamut (scanline artifact on some) |
| Microphone | No | Built-in (bottom) |
| Video Out | Component (progressive) + Composite | Component (interlaced only) + Composite + HDMI via AV cable hack (not official) |
| Weight | 280 g | 189 g |
| Battery | 1800 mAh (BA) / 2200 mAh (extended) | 1200 mAh (smaller bay) |
| PS Button | No (Home = "PS" logo) | Yes (dedicated) |
| Skype / Go!Messenger | No | Supported (mic + faster CPU) |
Note: PSP Go (no UMD) plays only digital (PSN / converted ISOs). PSP Street (E1000) = 3000 internals, no Wi-Fi, mono speaker, cheaper screen.