Hi , I'm wanting to build a cheap data storage PC. All it will be used for is storing data such as media. I want it to use be as power efficient as possible as i already have a gaming rig. I was thinking about only using a single core processor and a cheap motherboard with about 2-4gb of memory. It will probably end up having 6-8 hdd's. My concern is whether or not a single core cpu such as a sempron 2.7ghz 45watt is fine for this type of rig. It won't be hosting any servers etc, just for storage and leeching at lans? What do you recommend?