Check this out from Paul Thurrott's WinHEC 2005 blog: The MSN Messenger server farm handles over 70 million concurrent sessions every single day. Until recently, they were using 250 32-bit servers to manage that load. When they switched to Windows Server 2003 x64 Edition running on x64 hardware, they reduced the size of the farm to just 25 servers. Yikes. http://www.windowsitpro.com/windowspaulthurrott/Article/ArticleID/46175/wind owspaulthurrott_46175.html <http://www.windowsitpro.com/windowspaulthurrott/Article/ArticleID/46175/win dowspaulthurrott_46175.html> Interesting... rob _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Kenzig Kenzig.com Sent: Friday, April 29, 2005 9:09 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] 170% more users in x64t? From... http://www.computerworld.com/softwaretopics/software/story/0,10801,101427,00 .html <http://www.computerworld.com/softwaretopics/software/story/0,10801,101427,0 0.html> "Microsoft claimed, for instance, that the x64 version of Windows Server 2003 Terminal Services can accommodate up to 170% more users per server than its 32-bit predecessor. " Call me Peter but I'll believe it when I see it... JK