64-bit or 32-bit?

Source: Internet
Author: User
It is said that Windows Server 2008 is the last 32-bit operating system released by Microsoft, and it will be switched to 64-bit.
It is said that the 64-bit exchangeserver2007 operation speed is much faster than exchange2003, And the occupied space is only 1/4.
So far, I have still run 32-bit products, because my memory is not more than 4 GB, And I think 32-bit is faster, I naturally choose 32-bit.
Due to the fact that more server products run on the 64-bit platform, it seems that I will transfer to the 64-bit server sooner or later.
Today, the Pentium 4 630 desktop in the lab home, vpc2007 running 64-bit XP is naturally finished, saying it is not supported, rely on, my CPU is em64, why?
Run vpc2007 on 7500 of dual-core Core 2 and install Debian of amd64 ProgramIt also failed, saying it is not supported by the CPU, why?
Is it a problem with vpc2007? No, I will use virtual server!
64-bit or 32-bit?

Official server2008 http://www.microsoft.com/downloads/details.aspx? Familyid = 13c7300e-935c-440a-a79c-538e933d5424 & displaylang = en

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