Installing Exchange Server 2007 SP3

Our current Exchange 2007 server setup:

Windows 2008 (x64) Server NOT R2, Service Pack 2, 12 GB RAM.  
Exchange Server 2007 (X64) Service Pack 2.

Is Service Pack JUST for those who wish to deploy Exchange 2007 on a Windows 2008 R2 server, or is it required in our situation too?

Thanks in advance.
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lastlostlastConnect With a Mentor Commented:
In your deployment it is not required.

But I would recommed you to go ahead and apply the SP 3 for the Exchange Server as any future Rollup Updates that will be coming out... they will be for SP 3 +...

There are a lot of bugs/issues that get fixed in these updates and I would rather prefer to have my server up to date today rather to wait for an issue to occur and then realise that it is a bug which has been fixed in Rollup update 1 of SP 3...

I hope you understand what I am trying meant to say,,,

-Juddy-Author Commented:
Oops, that should be' Is Service Pack 3 JUST for those who wish to deploy Exchange 2007 on a Windows 2008 R2 server'
It improves a few other features but nothing absolutely necessary.

Here's everything new in SP3
Free tool for managing users' photos in Office 365

Easily upload multiple users’ photos to Office 365. Manage them with an intuitive GUI and use handy built-in cropping and resizing options. Link photos with users based on Azure AD attributes. Free tool!

-Juddy-Author Commented:
I'm aware of the 'benefits' of the Service Pack, but your comment doesn't answer my question!  
Service Packs are not required, but Exchange Service Pack 3 can be installed on Exchange 2007 running on a non R2 server.
Then to more specifically answer your question.  No it is not required.
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