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Problem using 64GB Corsair Dominator on ASUS P9X79 LE

Tags:
  • Asus
  • Corsair Dominator
  • RAM
  • Memory
Last response: in Memory
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June 25, 2013 12:15:32 PM

Dear experts,

I have a problem installing 64GB RAM (8x8GB) on my Asus P9X79 LE Motherboard with Core i7 3930K.
I need that much RAM for machine learning algorithms (mathematics). Several threads are run in parallel where each thread eats up to 16 GB RAM. I do not need any overclocking.
At first I had 32 GB of Corsair Dominator Platinum RAM (CMD16GX3M2A1600C9) - 4x8GB. It worked fine with default settings.
Now I added extra 32 GB (4x8GB) of the same RAM.
And strange thing happened. Bios and windows detect only 49GB of RAM.
I'm using Windows 7 Ultimate 64bit
However all Asus and third party utilities do recognise that there are 8 DIMMs installed. Also Dominator Platinum RAM has a nice feature - if it works (if it is powered) - small LED lights are lit on its frame. And all my 8 modules have those lights lit.

Also both my processor and motherboard do support 64GB RAM.
Can anyone help how to enable 15GB of "lost" RAM?

More about : problem 64gb corsair dominator asus p9x79

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June 25, 2013 12:21:10 PM

Does your mb have the newest bios file from asus on it???
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June 25, 2013 12:26:08 PM

smorizio said:
Does your mb have the newest bios file from asus on it???


Yes. I installed the latest BIOS as a first suggestion. Did not help.
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June 25, 2013 12:40:14 PM

Problem solved by reinstalling RAM
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