pjkelnhofer said:No problems and no speed bumps. Also, there is still no conclusive evidence that the 975 even exists.
yes there is evidence. I forget where, but I read an article somewhere that stated that a POWER 5 derivative was being developed along with the POWER 5, unlike the PPC 970 which was an afterthought of the POWER 4. Being that the PPC 97x (P5 derivative) was developed along size the POWER 5, it's no stretch to think that it shouldn't be completed and that Apple had some early samples long ago, enough time to design a new PowerMac around and/or make changes to the existing enclosure/motherboard that are necessary. IBM already has servers running on POWER 5, so this really isn't far fetched at all.