Using an energy-efficient desktop with a flat panel monitor for four years can reduce carbon dioxide (C02) emissions by approximately the same amount as not driving a car for eight weeks.
The desktop is extremely cheap at $369, and of course is aimed at low-end desktop users rather than anything else. However, it still sports a dual-core processor, though the obvious selling point here is the continued reduction in power. This is yet another mark of a changing market in which raw performance is becoming less of a concern, and efficiency is playing a much larger role. You can read the full press release in the comments section.