Exchange 64 bit: Is it worth it compared to 32 bit Exchange?

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Exchange Server
Microsoft Exchange
Should I run my exchange server on a 32bit or 64bit operating system? Does it matter? I currently have a 32 bit Exchange server we are upgrading to a new server in a few weeks and I am trying to see the benefits of a 64bit OS over the 32bit OS. Any light you can shed on the subject will be appreciated.

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For Exchange to take full advantage of increased memory utilization you will need the 64 bit. This is of course provided you are going to be installing Exchange 2007. You did not say what version.

The newer version of Exchange only come in a 64bit version, so you have to make the change.

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