Semi-OT Question: Mac Zif Upgrade - G3 vs. G4?

[Bobdog <bobdog@pseudobuddha.com>]

this is the machine i do my loopy/mixy work on, so this question should
be ok…

i will be purchasing a zif upgrade for my mac g3 beige 266 desktop this
week, digital performer being the main application i run on this
machine.

questions -

will i see a major difference in audio performance by using a sonnet
g4/500
versus using an ibm or sonnet g3/500?

versus a metabox g4/400?

reason i ask is that the difference in price will buy 512m of yummy
ram...

thanks!

bobdog