Core 2 Duo - L2 Cache - 2M or 4M?

I'll be running Creative Suite 2, and really old games, so if I don't need the 4M, then I would rather get a 2M CPU for $40 cheaper.

Thanks!

Sorry for my ignorance. I guess this is my question:

Intel Core 2 Duo E6320 Conroe 1.86GHz 4M shared L2 Cache LGA 775 Processor - Retail$165.50

Intel Core 2 Duo E4300 Allendale 1.8GHz LGA 775 Processor Model BX80557E4300 - Retail $114

Would I see a noticeable difference between these cards if I was running Creative Suite 2 with 2 GB RAM?