IBM's Power4+ reports on IBM's eServer p650, introduced today. The new server features 8-processors utilizing the Power4+, a slimmed down version of their Power4, aimed at the server market:

One of the reasons why IBM can cut prices to the bone with the pSeries 650 is that the Power4+ chip at the heart of the machine is based on a single chip module implementation of the Power4 processor that has been dramatically shrunk using a new 0.13 micron copper/SOI process.

IBM's PowerPC 970 is another revision of IBM's scaled down Power4 design, which is largely rumored to make it into Apple's computers.