Yup, definitely - mine's a similar spec and is awesome under Tiger. The only thing I'd recommend is getting a Radeon graphics card, but that's not essential for getting OS X installed and trying it out. I'm assuming yours is a Bluey from the specs, in which case it'll be even faster than mine (though from using mine it's hard to believe that's possible), given that the B&W has a higher bus speed than the Beigey, and you won't have to spend a week messing around with XPostFacto either! Enjoy it, OS X and G3s are great