I was wondering if there are any games that suffer from compatibility issues if played on a (modded) console from a different region. I'm asking that on behalf of a friend, who has a big ps1-ps2 game collection (both pal and ntsc), but has only pal machines to play at, since we live in a pal region country (Greece). He started considering this, after reading someone stating that the pal cpu and gpu on ps1 consoles, are clocked for PAL signals. Also, ntsc games force those components to run at a higher hz rate that wasn't designed to work at. Is that statement true?