16GB ram only 6.81GB usable

[dylanhale99]

I recently installed a new mother board and im having issues with my ram. I have 16 gb and it says only 6.81 is usable any ideas? Im pretty new to building computers I built my first back in april and added a few upgrades here and there so please explain like im 5.



System Specs
CPU- Intel i7-8700K 3.7GHz
GPU- Nvidia GTX 1080
RAM- Ballistix Sport LT DDR4 4x4
MOBO- EVGA Z370 FTW
Windows 10

 

[Calvin7]

Try identifying memory with a part number or link to it.