Dell is to install Microsoft 64-bit processing technology across its Dell Precision workstations and PowerEdge server lines.
Workstation customers can now order Dell Precision 470 and 670 workstations with the Windows XP Professional x64 Edition factory installed.
Dell PowerEdge servers with integrated Windows Server 2003 x64 Editions will be available in June.
The new operating systems are designed to take full advantage of more powerful 64-bit processing while maintaining compatibility with most 32-bit applications.
"Dell hardware has been 64-bit ready since June 2004 and we have worked extensively with Intel, Microsoft and applications supplier partners to drive development of standards-based solutions that ensure customers an easy migration path to 64-bit computing," said Jeff Clarke, Dell senior vice-president of the product group.