Will i need a Mod-Chip

[Loreeta80]

I have PSX and i wanna upgrade it with a Mod-Chip.Now i heard on Gamecopyworld that there are patches for PSX-Games.Do i need a Mod-Chip now or not? And are there differences between the Mod-chips?Because i can get one for 25 German marks one for 50 DM and now i heard that there is an Gameenhancer? What is it and will i need it for better playing. And by the way: where is the difference between a normal PSX Cable like:Scart 2 PSX and a RGB Cable?

Thnx for helping me.