Party Monger
Juggernaut
Most intel CPUs have great power management when not being used. Why limit what it can do for just a little saving. Maybe you can budget out the savings in terms of cost. Most desktop CPUs will have same amount of lower end power consumption.Case is not a problem for me. I have a CM Stacker 830 lying idle which I can re-purpose. Even with hot swap bays (I have two already), it will support 9 HDD, I need a CPU/Motherboard combo that is low on power consumption.
DS918+ power consumption is rated @ 28.8W with 4 x 1 TB drives installed.