Windows Server 2008 Sp2 -x86-x64-
Includes the Hyper-V role, Microsoft's native hypervisor for hardware-assisted virtualization.
Windows Server 2008 SP2 was uniquely positioned as a bridge between older 32-bit environments and the shift to 64-bit only infrastructure that began with its successor, Windows Server 2008 R2. x86 Support: Supports IA-32 processors with a minimum speed of 1 GHz. x64 Support: Windows Server 2008 SP2 -x86-x64-