Will LR4 run on old white mac book? run slow, or so so

Anyone run LR4 on a mac book? (not pro)

How does it run?

Will LR4 run and a Mac Book  (the old white ones)

Core 2 Duo 2GHZ dual core

4gig RAM

120HD

GFORE 9400 256 RAM vid card

running Lion 10.7

--
Photography, It ain't the same old Art form it used to be..