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ASUS P5B-deluxe; 6 GB RAM Installed, only Available 5GB ???

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August 2, 2011 10:58:07 AM

Hello,

ASUS P5B-deluxe mainboard
6 GB RAM Installed , only Available 5GB?
2x - Kingston KVR667D2N5/2G
2x - Kingston KVR667D2N5/1G

After installing 1Gb; 2GB; 1 GB and 2GB (total 6GB)
The system tells me 6GB memory is installed
However only 5GB memory is available, usable.

What am I doing wrong?

Please help.
Regards, JS
August 2, 2011 11:41:32 AM

Pull all the RAM out an boot the PC on 1 stick at a time. Start with the 1GB sticks. Once finished put all the RAM back and boot. If it still fails go get memtest 86 and test your 1GB sticks.

http://www.memtest86.com/
August 2, 2011 11:45:51 AM

What do you mean by "only 5GB memory is available", how do you know that?
a b V Motherboard
August 2, 2011 3:53:21 PM

Running a P5B Deluxe here too w/8GB. You must enable memory remapping in the BIOS to use all of your RAM.
!