As far as i remember, LawlessPPC was released just for Phenom CPU`s and a lot of ppl reported it working on them without any problems. If you want distro with a lot of stuff, then go for iPC 10.5.6 - it should work on Phenom aswell. Both of them have hardware support list so check your GFX, Ethernet etc. there, or search the forum to check if others have the same hardware working.

Btw. why X3 ?

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