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System only listing 8 GB of Usable RAM when 12 GB is installed.

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#1 cap2587


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Posted 17 August 2011 - 12:53 PM

I am having trouble with my computer recognizing all of my installed RAM. It says 12 GB (8GB Usable) under the system settings. I have an 17-920 CPU, windows 7 and my Motherboard is a Gigabyte GA-EX58-UD3R Intel X58 Socket LGA 1366 ATX Motherboard.

I have 12 GB Installed with 2 sticks of Kingston HyperX Blu 4GB (2 x 2GB) [/B][/B]240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model KHX1600C9AD3B1K2/4G and 2 sticks Kingston HyperX 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model KHX1600C9D3K2/8GX

I have tried to enable XMP to Profile 1 in the Bios. How do I get the Bios and system to recognize 12GB and not just 8 GB. Both CPUID and SIW list all 12 GB and the correct speed of 1600 MHZ.

Do I have to manually set the RAM settings in the Bios to achieve the correct total RAM. Appreciate some help. Thanks.

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#2 red2678


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Posted 17 August 2011 - 01:43 PM

Just a thought. Did you run a MEM test? Or Clear your CMOS settings. Sometimes if I am setting up a new PC I will make changes to the BIOS, forget and then get hung up because I forgot.

WARNING***Clearing your BIOS WILL ERASE all settings!!!***

But that may be what you need. If the PC is newly formatted and you are not running RAID or have some advanced hardware configuration.


Edited by red2678, 17 August 2011 - 01:46 PM.

"Unless life gives you water and sugar too, your lemonaid is gonna suck!"


#3 cap2587

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Posted 17 August 2011 - 09:21 PM

I changed the order that the RAM went in and that seemed to fix the issue. What is the most important stat to look at when trying to figure out what speed your RAM is running at and the total RAM installed. System info (pause break and windows key together), Bios, CPUID, SIW etc. System says 12 GB, Bios says 6 GB, task manager/performance says 12 GB. What am I really looking for. Thanks.

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