My mobo has 2x8gb ddr3 sticks but it only recognizes 12gb.

madcow0807

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Oct 12, 2014
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I recently upgraded my desktop from a single stick of RAM ( G.SKILL Ripjaws X Series 8GB 240-Pin DDR3 SDRAM DDR3 1600 to be specific) to two of them (same stick) but my PC only recognizes 12gb. I don't believe it is a problem with the slot because it recognizes 4 more gbs just not the whole thing. I changed slots anyway just to be sure though and no change. My mobo is the ASUS M5A99X EVO R2.0 and should support 32gb of RAM. I messed with the RAM BIOS settings to see if that would effect anything. After manual adjustment of all settings and rebooting there was still no change. I'm wondering if anybody else has run into this issue and found a fix for it. Thank you for any help.
 
Solution
Check CPU installation. Are you using factory CPU cooler? Look carefully at the CPU pins to see if one is ever so slightly misplaced. That small change can cause a problem. Also, always make sure the RAM is firmly inserted. These are just some things to check because they have caused this issue in the past for some people.

dickey005

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Apr 30, 2014
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Put properly working ram into the slot of bad ram if the properly working ram is still working this will make sure that there is no
problem with the slots and u said u upgraded your computer recently so your ram should have a warranty period so , contact the
shop or place where u bought it and get it replaced and get a new one :)
 

madcow0807

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Oct 12, 2014
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The weird part is I was asking and discussing this with other friends who have custom built PCs and a friend of mine with another ASUS mobo (different model) has the same exact issue and he doesn't even have the same brand RAM as me. Our towers our completely different except for the mobo brand, graphics card, and OS (Windows 8.1 pro x64). This leads me to believe it has something to do with the mobo or OS. If it was with the OS though I think it would be more prevalent on the internet.
 

madcow0807

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Oct 12, 2014
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Yes I checked the electronic receipt and looked on the RAM, it is indeed 8gb. That would be funny though lol.
 

madcow0807

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Oct 12, 2014
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I got two 8gb RAM sticks from a friend and tried them both and still it came up as 12gb
 

madcow0807

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Oct 12, 2014
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The cpu-z reads one 8gb and one 4gb but the weird thing is that my BIOS reads two 8gb sticks. I do not believe the issue is with the RAM
 
Check CPU installation. Are you using factory CPU cooler? Look carefully at the CPU pins to see if one is ever so slightly misplaced. That small change can cause a problem. Also, always make sure the RAM is firmly inserted. These are just some things to check because they have caused this issue in the past for some people.
 
Solution