1) Why the i7-5820K?
2) I suggest holding off for RYZEN price announcements.
3) You also need to replace Windows.
4) So that is:
c) DDR4 memory (if using DDR4 setup)
d) Windows 10 Home 64-bit (or Pro version)
- *you need new Windows license anyway, so might as well get W10 for DX12 compatibility etc., then sell the motherboard, APU, DDR3 memory, and Windows 8 together as the core of another computer (or just KEEP it and put in another case or buy a NEW case for the newer motherboard)
e) then you have to reinstall Windows 10 from scratch