been using this setup for about a year and only noticed the gpu in the top pci-e slot is running at x8 and not at x16. is this because of the m.2 960 evo ?
Update your version of CPUz first as well as your BIOS.
hi. it has been solved. the gpu only has half a row of contacts on the interface therefore will never go beyond x8. new rx480 coming soon. thanks and i updated the bios 
