Minimum Speed Cpu.

First post on here so Hello. This is my first build with WHS2011 but have experience with other servers (mainly Linux based). I was just wandering if a 1.0ghz dual core would be fast enough to run WHS2011 from actual users experience not theoretical numbers. It'll be running with 4gb ram.

I'm trying to create a super-low power server and that's the lowest power consumption I can find.