Question 16GB Ram Detected 8GB Usable

[Dio Brando]

so i recently installed new ram and windows detecs 16 GB but only lets me use 8GB

 

[rgd1101]

full system spec? exact model please

 

[Dio Brando]

Ryzen 3 1200
Gtx 1060 OC
16GBram
Windows 10 Home
A320M Pro-VD Plus motherboard

 

[alceryes]

Please list the specs of each memory module and which slot on the motherboard (from the CPU) you have them. Where does Windows see 16 but only shows 8 usable?