Memory is missing

Jun 5, 2018
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Only 7.9 gb of ram is being used out of 16. It does detect becuase it says 2 of 4 slots used in task manager. I think alot of it is being used in commited memory but im not sure.

Specs
Mother board Msi 970a gaming pro Carbon
Ram Patriot Viper 16 gb 2x8 DDR3 PC3-12800 16000MHz
CPU- Amd FX 8370
Graphics card- XFX RX 480