Wrong total ram ( 8 GB installed, 4 appears and used in total )

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I have this motherboard: GA-X38-DQ6 which can hold up to 8 GB of Ram.

When I got this computer it had 4 memory sticks, 1 GB each, and everything was fine. Now, I have two sticks, 4 GB memory each: DDR2 8GB RAM KIT (2x4GB) PC2-6400 800 Mhz 240pin For AMD CPU Chipset. Using x64 Windows 7 Operating System. The problem: When I installed them I can see in dxdiag that I have 8 gb of memory but in task manager the total is 4.

Steps I did to define the problem: At first I thought that 1 of the ram sticks was not working, so I took them out one at a time to check if they were malfunctioning. And I noticed the following thing: Both of the rams were appeared as half in the task manager.

So I believe there must be a bios setting that is wrong or something with the ram sticks. I even tried to boost the voltage for rams ( from 1.2 normal I made it 1.8 ). I read many similar problems here here, but I did not come to any conclusions so I would appreciate some help.

Neo Essence

Posted 2015-05-19T19:40:46.010

Reputation: 21

It looks like you are using a 64-bit operating system per your link: prntscr.com/773obb – Abraxas – 2015-05-19T19:59:35.253

When using 2 modules, be sure to install them in the first and third slots, see page 17 of this pdf

– Moab – 2015-05-19T22:23:06.287

@Neo: Why did you delete the Task Manager screenshot? Did you edit it out by mistake? – Karan – 2015-05-20T02:05:45.333

Hello, thanks for the answers but i have them in the first and in the third slots nothing changed... I read some people with similar problems talking about voltage in ram. I ran in 1.25 normal and i have placed + 45. But i am afraid to place more. I have read some people say that i should do it 2.1. Anyone knows about it? – Neo Essence – 2015-05-20T11:24:27.250

Right click on your Desktop, click Screen Resolution, then Advanced Settings. Whatever is in Shared System Memory (i.e. System RAM) is unavailable for use other than graphics. – BillDOe – 2015-05-20T18:33:49.207

Answers

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The motherboard chipset supports only 2 GB modules. 4 GB modules are not supported. Please refer the specifications here

4 x 1.8V DDR2 DIMM sockets supporting up to 8 GB of system memory

user556070

Posted 2015-05-19T19:40:46.010

Reputation: