PSP-1000 vs PSP Slim & Lite: Loading Time Difference Is Negligible

Real-world loading difference is negligible. Both models use the same 333 MHz MIPS CPU (Slim runs at 333 MHz stock; 1000 can be clocked to 333 via CFW) and UMD drive with similar seek times.

Minor Factors

• RAM: Slim has 64 MB vs 32 MB (1000) – helps texture caching, not UMD load speed
• UMD drive revision: Slim's drive is slightly quieter and marginally faster in some units, but variance between individual drives exceeds model difference
• Firmware: Slim ships with newer FW; both can run latest 6.61

Real Speed Boost: Digital Games

Install games to Memory Stick (via CFW or official PSN downloads). MS read speed (~10–15 MB/s) crushes UMD (~1–2 MB/s). Load times drop 50–80%.

Bottom Line

Don't upgrade models for loading speed. Get a large Memory Stick Pro Duo (Mark 2 / 16–32 GB), install CFW (6.61 PRO-C2 / ME), and play ISOs/CSOs from MS. That's the true upgrade.