My question is about chassis temperature and overheating issues. I have a recently bought a Macbook pro 13" - 2017 with two thunderbolt 3 ports. The notebook is performing fine, but when it is connected to the external Dell monitor (2560x1440 resolution), it gets uncomfortably hot. The same monitor was previously connected to a 2013 Macbook Air (i7) and there were no heating issue whatsoever (it would get hot only when doing extremely intesive CPU work).
The temperature on the left speaker is 40C (104F) and the temperature of the USB-C adapter's steel case is 45C (113F). The chassis around touchpad has 37C (99F). Measured with an IR thermometer. The room temperature is 26C (79F). The CPU usage is low (91% idle). The fan is near silent (iStats report that it is at 1950 RPMs.
The monitor is connected via USB-C - HDMI konverter.
When monitor is connected, the current draw is apx 50% higher than what it is when monitor is not connected (regular browsing). This was not measured scientifically, but through iStat Menus current draw information.
The adapter gets uncomfortably hot very quick and so does the chassis of the Macbook pro. It is even worse if the Macbook is charging at the same time (using the other available USB-C port). I previously owned Macbooks and a Macbook Air and none of them exhibited such heating issues.
I saw possible solutions on how to adjust the Energy Saver not to use the external graphics card, but it seems that this is not the case for this type of Macbooks -- at least, the settings are not present in the Energy Saver.
This is certainly unexpected from my side. Are such heating issues normal? Is there a way to limit GPU power usage or 'something'?