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This is my first question in this forum, please help me to solve my problem. Recently, I purchased another RAM module to upgrade my Windows 10 setup. But even after the upgrade, it still shows 15.9GB (12 GB usable). I don't know why it looks like that. Has anyone encountered such errors before? Please help me. Any kind feedback would be highly appreciated.

Current system setup:

  • OS: Windows 10 Pro 64 bit
  • RAM: 8Gigs Corsair Vengeance DDR4 3600 Mhz
  • Mobo: MSI B450
  • CPU: AMD Ryzen 5 3600
Toto
  • 19,304
GiovaniGibson
  • 11

2 Answers2

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I compare your RAM with the one that is offered by crucial.com for the B450 GAMING PLUS, which is one motherboard variant among the several that exist.

Your RAM exceeds the maximum that Crucial advises on several attributes:

  • Yours is DDR4 3600, while Crucial advises at most DDR4-3200
  • Yours is PC4-28800, while Crucial advises at most PC4-25600

I suggest downloading and running the Crucial Advisor by clicking the button of "Start your scan" on the Crucial website, then pay attention to what it advises. I find the results of the Crucial Advisor to be very correct and are guaranteed by Crucial (and the prices are competitive).

The problem of RAM compatibility is complex.
See the post What exactly is the cause of RAM incompatibility?

harrymc
  • 498,455
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Some guy on the internet claims that swapping the RAM to a different slot changed the amount available from 12gb to 16gb https://linustechtips.com/topic/745635-16gb-ram-12gb-usable-why/