Memory? Options

[tom2323]

running logic 4.8 on a new g4 i mac. its basically the only program i have on it and intend to keep it that way. i dont have the money to buy a sound card or anything at the mo, so wondering if increasing the memory allocation to logic will help things run smoother as occasionally logic stalls and errors occur due to lack of memory, if so how much memory shall i give it considering my macs general power? its says the prefered memory is 90000 or something, is it poss to give it that? cheers guys.