So either he has VERY special unique requirements that he hasn't clearly communicated,
Why is low power consumption a special, unique requirement? All of my computer equipment was chosen and/or assembled with low consumption in mind. My Desktop's TDP is under 350W and I can play games at 1920x1200, albeit not with everything turned on any more. I have a small fleet of netbooks for performing long-running tasks or for traveling, I sold an HP EliteBook and bought three of them. I even took an EEE 701 4GB running Jolicloud on a six-week vacation to Panama. My most power-hungry portable has two cores and the CPU has a TDP of 13W, and I'm undervolting.
Much of the goal was to be able to run on solar for long periods, which I do occasionally. Not so much lately, unfortunately, but I've mostly rebuilt my mobile solar rig. That reminds me, I should order some aluminum piano hinge.