Integrated Microsoft Hyper-V Server 2008 R2 SP1 available for download

If you have an existing installation of Microsoft Hyper-V Server 2008 R2 (the stand alone version of Hyper-V) you can install service pack 1 by following the process that is outlined here: https://blogs.technet.com/b/virtualization/archive/2010/07/16/installing-service-pack-1-on-microsoft-hyper-v-server-2008-r2.aspx

But if you are setting up a new Hyper-V Server you can grab the integrated installer from here: https://www.microsoft.com/downloads/details.aspx?familyId=92E2C4BA-6965-4F8E-ABBE-CBB40556B680

This will allow you to use dynamic memory and RemoteFX without having to get a full Windows Server.

Cheers,
Ben