[ubuntu] Ubuntu desktop vs server

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http://ubuntuforums.org – Hi I currently run an SME server and understand most basic topics for setup and domain records but feel that I would like to install more packages that I would not be able to do on SME due to their templating methods of the server design. I believe ubuntu server may be a better choice at this time. Is there any reason to load the server version vs the desktop version ? I mean can I install all the features of the server version from the desktop software center ? I know performance will be slightly lower this way but I only have minimum users and probably also use as a minecraft s (Hardware)