Intel Corp (INTC)

[Dan3]

Re: 64-bit AMD systems are not available from IBM, but 64-bit Intel systems are.

Nope. Shipments were halted.
IBM will stop shipments of the recently announced x450 server, IBM's first product with Itanium 2, according to an IBM spokeswoman.
http://www.nwfusion.com/news/2003/0512itaniumbug.html

And Dell stopped offering Itanium systems, too. But that happened a while ago and they said it was becaue no one was buying them, not because of bugs:
December 13, 2001
Dell to Discontinue Itanium Workstation

Frustrated by a lack of sales, Dell Computer Corp. is going to pull the plug on its Itanium-based workstation, according to sources at the company.

The withdrawal of the Dell Precision Workstation 730 would mark another setback in Intel Corp.'s efforts to boost relatively lackluster sales of its first 64-bit processor targeted for use in high-end workstations and servers.
http://www.eweek.com/article2/0,3959,218512,00.asp