Intel's mobile CPU generates more heat
The Intel Pentium Su2700 CPU is a single core, 1.3GHZ core speed, 800MHZ ancient FSB CPU made on 45nm. The SU2700's heat generation is 10 watts. The AMD 200U CPU is 1GHZ with 1.6GHZ HyperTransport made on 65nm SOI, its heat production is 8 watts.
Moreover, the AMD CPU uses direct connect, the memory controller is built in. The Intel one needs a separate chipset, and usually that is another 10 watts.