In that picture it's showing a maximum power draw of 13.6 watts which is virtually nothing. The card is only 2 degrees celsius higher than the idle CPU. I don't see anything out of the ordinary in that. If you have hardware acceleration on in your browser that would account for that wattage. I don't use hardware acceleration on firefox and let the cpu do that work. I have all the desktop graphics features like transparent windows turned off also, just use font smoothing. My card is between 3-9 watts on the desktop.