Not using all my ram

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Aod___

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Anyone know why my installed memory is 12GB but it says only 4GB of my RAM is useable?

Computer also completely freezes after some time.

Taskmanager: http://prnt.sc/8xowhk
CPUZ : http://prnt.sc/8xoxfb

OS: Windows 10
CPU: i7 875k
GPU: GTX 570 and a gtx 465 for phyx
Motherboard: P7P55D-LE

I've reseated all my sticks and tried swapping them around but nothing is changing.

Also tried resetting the bios and still nothing

Removed one stick of ram at the time and they each work.

I would love to get some help on this problem thanks.
 
Solution
bailojustin
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bailojustin

bailojustin

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Ok so I see an issue, Your runnning dual channel memory, and you have 3 different sticks. Place the G SKILL Ram stick, currently in slot 4, into slot 1, should be color coded on your MOBO, now do NOT put another stick into the other spot of the same color, now take your 2 Corsair vs2gb1333d4 currently in slot 3, and 1. place these sticks in the 3 and 4th slot, of the other color. Remove the stick that is currently your slot 2, Do not put this one back in as it will not dual channel with your G series. this should give you 6gb of ram. with the Corsair vs2gb1333d4 running in dual channel, and the G skill in the first slot alone.
 
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bailojustin

bailojustin

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the other corsair you have is xmp enabled aswell, so when that is running the voltage is at 1.65, while the gskill will try to be 1.5, but if you change voltage to 1 memory module, you change them all, so this ram stick is pretty much useless for the time being. The stick I am reffering to is CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX4GX3M2A1600C9, This stick was ment for dual channel and from the looks of it you dont have the second one, if you did have the second one you should be able to replace the other 2 corsairs with these 2, since they run in dual channel, in slot3/4 and keep the g skill seperate in slot 1, slot 2 free. They should be color coded on your MOBO. if you have the second stick to the dual channel I just listed then replace them and you will have a total of 8gb of ram, 4gb from your gskill, and 2gb each from the corsair in dual channel
 
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Aod___

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Ok ill write this down and going to try it right away.
 
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Aod___

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I have a 64bit operating system sorry for not writing that down.

 
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bailojustin

bailojustin

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Ok perfect, because right now it looks like its only utilizing slot 4, which is your 4gb G skill, because the other 3 are out of order and not in the correct slots. the 2gb 1x2 corsair into slot 3/4 color coded the same, and Gskill into slot 1, If you have the other Corsair 2gb stick that belongs to the 4gb 2x2 then use these in slots 3/4
 
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Aod___

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Ok did exacty what you said about switching the ram and taking out the xms3, that made me bluescreen right before the login screen several times so i switched the corsair pair to slots 1 and 3 and left the gskill in slot 4.

And i dont have the second corsair stick, i just got one from my friend .

Task manager: http://prntscr.com/8xp6rr

 
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bailojustin

bailojustin

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Thats the best you will get, it seems your slot 1 and slot 3 are the dual channel and 2/4 are dual channel, by seperating your g skill into its own ram module you can use that full 4gb, and by putting the corsair into 1 and 3, you get to use the dual channel configuration for them both as stated above. If you are hoping to get more then 6gb, you are going to have to buy new ram, pref like 8gb 2x4, thats 2 sticks at 4gb each, and then you will put those into slots 1/3 to run dual channel for a total of 12gb of ram, 8 from the new ones and 4 from your gskill.
 
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Aod___

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Nov 1, 2015
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I will buy a 2x4gb kit then.

Thank you for the good answers!
 
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