I've been searching for an answer but can't seem to find it. This is for the 2015 MBP with Iris integrated GPU only. I know it can only drive 3 screens max, but if you're putting it in clamshell mode can you do 3 externals? Also, is anyone able to comment on iGPU only performance in driving 2 externals? I will never game or do photo/video editing (I have a desktop for that) so beyond regular usage I will only be using the GPU for driving externals. I will only be using 1080P monitors for the MBP.