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16gb ram (12gb usable) why?

Mahbub
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I am on gigabyte 78lmt usb3 mobo. Amd installed 4 *4 gb ram. It shows 16 gb but says 12 gb usable. I tried swappingdidnt work. Why??please help

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Windows uses 4 gb, but it says you have 16 gb installed so everything is okay

 

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4 minutes ago, Kingk22 said:

As @Rolling Potatoe said, try one stick in each slot to see if you have a bad slot.

Nope, it says 16 gb installed but 12 usable and that is windows reserving ram i have 16 gb ram and i can only use 12 gb so nothing is wrong without pebcak

 

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1 minute ago, Bwithnewcast said:

Nope, it says 16 gb installed but 12 usable and that is windows reserving ram i have 16 gb ram and i can only use 12 gb so nothing is wrong without pebcak

 

So means its not defectiv?? But when i install 12 gb it says nothing like thst. When when 16 gb is installed it shows like 12 gb usable. How can i make 4 gb usable too

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1 minute ago, Mahbub said:

So means its not defectiv?? But when i install 12 gb it says nothing like thst. When when 16 gb is installed it shows like 12 gb usable. How can i make 4 gb usable too

Try what @Rolling Potatoesaid, check all the slots, and try moving the sticks around (might be the stick, might be the slot)

Quote me in replies so I see them.

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1 minute ago, Mahbub said:

So means its not defectiv?? But when i install 12 gb it says nothing like thst. When when 16 gb is installed it shows like 12 gb usable. How can i make 4 gb usable too

First you go to task management and then you click the performance tab, an then you select your ram and take a screenshot of that and show me so i can help you better

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It's normal. It's the same for me:

 

 

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Whoever here has it change ur ram sticks to other slot. I did it amd now my full 16 gb is usable

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