G-Skill Ripjaws 32gb ram with Rampage 4 - only 16 recognized!

Hello,

My system is an Asus Rampage 4 Extreme, with this G-Skill memory kit installed: http://www.newegg.ca/Product/Product.aspx?Item=N82E16820231500

My problem is that only the DIMMs in the first 4 slots (A1,A2,B1,B2) are being recognized. All 8 sots will show up in the BIOS POST, but only the 4 in those slots will count towards the total onboard RAM. I've confirmed this by removing and shuffling my DIMMs around and rebooting several times.

Am I missing something to be able to set this mobo up for 32 gb ram?

Thank you!
4 answers Last reply
More about skill ripjaws 32gb rampage recognized
  1. Hello,

    My apologies - the RAM that I have is actually this: http://www.newegg.ca/Product/Product.aspx?Item=N82E16820231502

    2133 not 1866

    Thanks!
  2. I'm also noticing that the RAM is being set to 1600 not 2133. System is unstable at 2133 :-/
  3. Im taking a wild guess here and mixing it in with my research that your motherboard can support a certain amount of RAM and I am guessing you went over your RAM amount.
  4. The documentation for the Asus Rampage IV Extreme gives no indication on the supported memory vendors list that it supports 8 sticks of memory or 32GB of RAM. Having said that, they tend to lie, my Asus P5E3 "supports 8GB' but runs just fine with 16GB of DDR3-1600.

    Ensure your BIOS is updated to the latest version as this will have a significant impact on your RAM compatibility. You should be at BIOS 3301. If you're at 1404 or less then you will have run the BIOS converter first.

    Their specs are:
    8 x DIMM, Max. 64GB, DDR3 2400(O.C.)/2133(O.C.)/1866/1600/1333/1066 MHz Non-ECC, Un-buffered Memory
    Quad Channel Memory Architecture
    Supports Intel® Extreme Memory Profile (XMP)
    * Hyper DIMM support is subject to the physical characteristics of individual CPUs.
    * Refer to www.asus.com or user manual for the Memory QVL (Qualified Vendors Lists).
    Multi-GPU Support

    Make sure you turn on BIOS XMP support.
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