16Gb Ram installed only 8Gb usable


Sep 14, 2017
So recently I had installed a couple of 4gb ram sticks that I had laying around to help improve load time and other things. When I started up the computer it was reading that there was 16gb of ram installed, but only 8gb was usable.
Ram Info: https://imgur.com/a/wfYGJ

Bios Settings: https://imgur.com/a/sqO9C

System Info:
Motherboard: MSI 970 Gaming
CPU: AMD FX-4350 @ 4.20 GHz
Ram Installed: 16GB (4x4gb)
Graphics: gtx 1060 @ 6GB Vram

Note: I also tried the ram on my "test bench" (just a few parts laying around)
Motherboard: aahd3-hb
Cpu: A8-3800 series @ 2.40 GHz
Ram Installed 16GB (the same 4x4Gb)
Graphics: gtx 740 (was just a graphics card i had around

When I tried it in this setup it was showing all 16gb of ram

Current: https://imgur.com/a/tgZlc
Test: https://imgur.com/a/ZGeZN

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