: If using it as a print server, you can host both 32-bit and 64-bit drivers to support various client workstations. 3. Comparison of Requirements If you are deciding between the 32-bit Windows Server 2008 and the 64-bit Windows Server 2008 R2, note these hardware minimums: Requirement Windows Server 2008 (32-bit) Windows Server 2008 R2 (64-bit Only) Minimum CPU 1 GHz 1.4 GHz Max RAM 4 GB (Standard) / 64 GB (Datacenter with PAE) Up to 2 TB (Enterprise/Datacenter) Architecture x86 x64 or Itanium 4. Current Status and Lifecycle End of Life