That wouldn't make sense, because if the 7W is for a thinner and sleeker device, you'd have less room for cooling.
Yep. that is what I am thinking.
The 7 watt SDP processor device would have the same or even smaller cooler, but just be clocked lower. (No turbo on CPU and GPU like you said)
The upshot, I am guessing, is that manufacturers will have to figure out what type of cooler best suites the max clocks of these "turbo less" processors at 80C and below.
Keep the worst case scenario at 80C and below and these low clocked Intel processors consume 7 watts or less....use the typical cooler to keep Tjmax at 105C and the power consumption now climbs above 7 watts.
In a nutshell, I would expect a processor with a 7 watt
SDP to need a larger cooler than a 7 watt TDP processor. (But this cooler should still be smaller than a 10 to 13 watt TDP cooler)