Quote Originally Posted by savantu View Post
What the is that ? From where do you pull this ranges ?
Do you understand what TDP is ?

If a chip has a TDP of 10w it means, that's the maximal power it will dissipate running power intensive commercial SW. The cooling solution needs to be able to remove 10w 24/7. The CPU itself can exceed its TDP in certain cases ( thermal virus for example ). Another metric is idle power, when the whole chip or parts of it are in deep power states.

So if T40N has a higher TDP than N550 it means at similar load levels it will burn more power. It should be fairly obvious.
You don't just have TDP, you have TDP ranges, If you haven't noticed AMD has close to 100 different models rated at 65, 80, 95 or 125W TDP. A coincidence that all these chips has a TDP at these 4 exact numbers? Of course not, if a chip has a maximum power consumption of 69W, it's rated at 80W. And you know this. And for Bobcats AMD has only three TDPs to date, 5, 9, and 18W. That means that a processor rated at one of these can be anywhere between that number and the number below.

A T40N could be 1W away from being rated at 5W, and there is no way you could know if it is. Just as well as it could be at 8.9W.

That's why you can't do your comparisons and expect to get a useful conclusion.