@hst101rox
Doesn't reduce performance is a bit of a misnomer. The eco series chipsets are not Z series, they use B series. There isn't really any option for overclocking and the boards push the memory in single channel. So if you do not need the features of a Z series, do not overclock, these do what they are designed for. But what's the point of sticking these features in a Z series Gaming board? Someone would overclock that and the power savings would be rendered worthless, and they aren't using the S and T series low wattage CPUs they are using K series. And then the cost savings would go out the window with the added cost of more VRMs, more heat sinks and the rest to support that usage.
You can have power efficient and cheap, or you can have performance and features... you can't have it all in the same package.
Also going green often means using different solders and other items to reduce toxicity. These hold fine under normal usage with low wattage parts, they crap out instantly with high wattage parts. You can't have enviro friendly and high end performance, doesn't mix.