Quiggy, you are probably right. The lack of any literature from HP citing the 1 watt technology does support your conclusion. I will say the AUO572D display appears about 25% brighter at max brightness than the AUO552D display. I had both the HP Quick Ship (i7, 8G ram, 256GB SSD with LTE modem) and my current HP custom build (i7, 16G ram, 512GB SSD wifi only) for about a day to compare before returning the quick ship model. I didn't notice much difference in battery life either, but I did notice the custom build has a brighter display (just not sure how many nits).