It's official: Apple shifting to Intel chips - Computerworld: "IBM's 64-bit PowerPC 970FX processor, which Apple calls the G5, is very competitive with Intel's Pentium 4 processor when it comes to desktop performance. However, the latest version of the chip required Apple to use liquid cooling technology to make sure its Power Mac computers would function. IBM and Apple have thus far been unable to work the G5 into a notebook, the fastest-growing segment of the PC market, Jobs noted with disappointment."