Fitting a modern processor into the chassis is one thing, but I am not sure how cool it runs. The 4650G is a 65W processor and in such a small chassis, I think it will run quite hot under load. I've tried fitting a Ryzen 5 3400G into a InWin Chopin chassis and cooling the APU with a low profile Cooler Master G200P before, but the thermal is really bad. At idle with an ambient temp of around 30 degrees, it is between 40 to 50 degree celcius. At load, it can easily reach 80 to 90 degrees. When running 3D Mark Fire Strike, it will freeze and reboot.