Also I'm currently running the following, I specifically built this to run inside an NES for an old school looking rig. It runs Borderlands pre sequal and heroes of the storm on max settings with no lag but it lags bad on Star Citizen PTU so I'm going to upgrade the video card and keep it in my big case for now. I'll finish my NES later.
CPU-AMD A10-7850K Kaveri 12 Compute Cores (4 CPU + 8 GPU) 3.7GHz Socket FM2+
BOARD-MSI A88XI AC V2 FM2+
STORAGE-EVO 850 500gb SSD
MEMORY-16GB G-Skill Sniper 2400mhz ram (2x8 gb)
PSU-Ultra X4 850watt <---EDIT that's what I put in my mid tower lol obviously wont fit in an NES for the NES I was using a Pico PSU 250 watt, google that if you need to but definitely not for your build!
all tucked inside an NES :)
This rig is running directly from the onboard due to the super awesome A10 CPU having the new 8 core gpu 4 core cpu APU combo, had to see it working in person and it's very freaking impressive for a no video card system. Amazing in fact!