A claim was made for IBM to manufacture "Xbox 2" CPU from this web site.
http://www.teamxbox.com/news.php?id=4929 Note that IBM has contracts/alliances with NVidia, ATI, AMD, Nintendo, Sony and ‘etc’. It’s not the first time that IBM manufactured a X86 chip under license. On the other hand, MS Windows NT 4.0 was available for PowerPC…