That is more than powerful enough for a dedicated streaming PC. Some people get away with using Pentiums or an i3. Others will use an APU just to save on graphics card costs... all of those are far less capable than the i5 7400... and if you can use the 1050 somewhere else, you really don't need it in this machine. The CPU will take the brunt of the work and the integrated graphics will work just fine for it. So it doesn't need to be there unless you want it to be.