16gb installed only 8 usable

ddua8815 · Sep 22, 2017

I have already seen many threads about it but none of them helped me...
I installed 16gb ram 2x8gb, when I go to PC properties it dedicates 16gb but says that only 7.95 are usable, it's written like so '16GB (7.95GB usable)'
My system:
AMD R5 1600
MSI B350M mortar arctic
GTX 980 G1 GAMING
Crucial 16GB ddr4 2133mhz - CT2K8G4DFS8213

KahouAoki · Sep 22, 2017

Make sure that the sticks are installed in the A2 and B2 channel slots on the board as specified in the manual.

utroz · Sep 22, 2017

What exact version of windows are you using? Some versions are limited in how much ram they can use.

ddua8815 · Sep 22, 2017

KahouAoki :

I checked it, and while checking I saw I have small piece of rubber stack in the slot, (fell from my screw driver when I built the pc)
I cleaned it but I'm afraid the some of it got stack inside of it... Can it be?

KahouAoki · Sep 22, 2017

Just disassemble the system, and clean the slots thoroughly then.

ddua8815 · Sep 22, 2017

KahouAoki :

I cleaned it and still nothing. it still recognizes 16gb of memory but only 7.95GB are available

The Paladin · Sep 22, 2017

okay so your saying your bios is recognizing 16GB of ram (so the hardware is recognizing the correct amount of ram you bought.

windows Home editions especially if 32 bits will only recognize up o 8GB of ram.

if this is your case, then you need to upgrade to windows x64 bits

ddua8815 · Sep 22, 2017

The Paladin :

I have Windows 10 pro x64 as far as I know... How do I check that?

The Paladin · Sep 23, 2017

start - This PC - (top of page under category system) system properties - look at system type and Installed Ram

ddua8815 · Sep 23, 2017

The Paladin :

Installed memory (RAM): 16.0GB (7.95GB usable)

System type: 64 bit operating system

The Paladin · Sep 24, 2017

same page is it windows pro or windows home ?

ddua8815 · Sep 24, 2017

The Paladin :

Windows pro

The Paladin · Sep 24, 2017

after searching the forums I found this message : http://www.tomshardware.com/answers/id-2928234/windows-half-installed-ram.html
it seems this was the answer that seems to fit with your issue as well, might give it a try to see.

Yeah i had the same **** issue with 16GB Ram. It always used around 7-8GB in Idle and that's way too much. You can Turn off The Auto Ram Virtualisation. Open System by clicking the Start button Picture of the Start button, right-clicking Computer, and then clicking Properties.
In the left pane, click Advanced system settings. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
On the Advanced tab, under Performance, click Settings.
Click the Advanced tab, and then, under Virtual memory, click Change.
Clear the Automatically manage paging file size for all drives check box.
Just try to Uncheck the Automatically RAM *** and restart ur pc and look how ur ram usage is after taking the auto thing out. After Restarting your Computer you need to check if the Ram usage is lower under idle. If it worked for you, you can put back the Automatically Ram usage and look after that again if your ram usage is still the same as before. For me it worked well to just uncheck and after restart to bring it back to automatically mode. Now my Ram usage is in idle around 12-16% and that's normale usage

ddua8815 · Sep 24, 2017

The Paladin :

after searching the forums I found this message : http://www.tomshardware.com/answers/id-2928234/windows-half-installed-ram.html
it seems this was the answer that seems to fit with your issue as well, might give it a try to see.

Yeah i had the same **** issue with 16GB Ram. It always used around 7-8GB in Idle and that's way too much. You can Turn off The Auto Ram Virtualisation. Open System by clicking the Start button Picture of the Start button, right-clicking Computer, and then clicking Properties.
In the left pane, click Advanced system settings. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
On the Advanced tab, under Performance, click Settings.
Click the Advanced tab, and then, under Virtual memory, click Change.
Clear the Automatically manage paging file size for all drives check box.
Just try to Uncheck the Automatically RAM *** and restart ur pc and look how ur ram usage is after taking the auto thing out. After Restarting your Computer you need to check if the Ram usage is lower under idle. If it worked for you, you can put back the Automatically Ram usage and look after that again if your ram usage is still the same as before. For me it worked well to just uncheck and after restart to bring it back to automatically mode. Now my Ram usage is in idle around 12-16% and that's normale usage

Didn't work either... I've just seen that I didn't activate my windows (the grey message in the right bottom of the screen)
Can it be that?

The Paladin · Sep 24, 2017

well I never heard or noticed that before but I always use licensed products... have you tried making a outlook mail account and using it to log into your box and see registered that way it grant your the rest of the useable ram... it worth a try, easy to see.

ddua8815 · Sep 24, 2017

The Paladin :

My window is licensed but someone told me it doesn't matter...
And I didn't understand what you suggested

marcuscatan · Jul 17, 2018

ddua8815 :

I just had the same problem. I have 4 slots, I kept switching the 2 pieces, placing them in random combinations among the 4 slots until it worked. o.o

ddua8815 · Jul 17, 2018

marcuscatan :

One of my ram sticks was broken...
I tired it by it self and in another pc. Talk to the company which sold you that or something...

16gb installed only 8 usable

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