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Asus Rampage IV and 3930k showing only 12gb out of 16gb!

gamingarena
Level 7

‎04-01-2012 08:51 PM - last edited on ‎03-06-2024 09:27 PM by Community Admin

Im going crazy trying to figure out the problem.

Since last 4 days my system will not show full 16gb or ram only 12gb.
I'm running Asus Ramapge IV Extreme, 3930k and G.SKill Ripjaws Z F3-17000CL11Q-16GBZL 16gb ram.
I can see the ram in bios all 4 red dims populated but when system boots it can only see 12gb, same as CPU-z it can detect all 4 dims but systems shows only 12gb.
If i put 3 sticks in red dims slots and one in black slot it can see the whole 16gb but then its not running in Quad Channel.

I actually went and got brand new kit of Corsair Vengance LP 16gb 4x4 ram to make sure its not the G.Skill and still same it only boots with 12gb detected even though the bios still see all 4 dims.

I even switched 3930k with another one to make sure its not the memory controller on the CPU ICU itself but still no go, so definitely figured it out its Motherboard.

And yes tried every single ram stick separately one by one switched them around took out the motherboard checked all the pins cleaned all the dim slots still no go only 12gb.

Im running out of solutions here, i saw here there are other people with same problems so i was wondering if they found the solution or its RMA.

I never did any RMA with asus what is the procedure.

Thanks for any Help!
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Raja
Level 13

‎04-02-2012 12:14 AM

Can you nail it down to any particular red slot that is not mapping a DIMM? If you can then the board may need to be RMA'd, seeing as you've tried more than one kit and have remounted the CPU cooler/checked for bent pins etc. If the slot it happens on is random, then it's going to be down to settings.

-Raja
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gamingarena
Level 7
In response to Raja

‎04-02-2012 12:26 AM

Raja@ASUS wrote:
Can you nail it down to any particular red slot that is not mapping a DIMM? If you can then the board may need to be RMA'd, seeing as you've tried more than one kit and have remounted the CPU cooler/checked for bent pins etc. If the slot it happens on is random, then it's going to be down to settings.

-Raja


Hi Raja thanks for the reply,

Yes i nailed it to D1 that's the one.

So what are my options how would i go replacing the board.
I'm located in Toronto, Canada

Thanks,
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Raja
Level 13

‎04-02-2012 12:32 AM

I think all RMA requests for Canada go through the same inbox. It will be this URL from the sticky thread at the top of the forum:

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Raja
Level 13

‎04-02-2012 12:37 AM

Before you do that though, one last thing to try, can you set the Max MHz profile in the Memory timing profile section and seeing if D1 then shows up. Set DRAM frequency to DDR3-1333.
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gamingarena
Level 7
In response to Raja

‎04-02-2012 12:39 AM

Raja@ASUS wrote:
Before you do that though, one last thing to try, can you set the Max MHz profile in the Memory timing profile section and seeing if D1 then shows up. Set DRAM frequency to DDR3-1333.


OK let me try that,
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gamingarena
Level 7
In response to Raja

‎04-02-2012 01:06 AM

Raja@ASUS wrote:
Before you do that though, one last thing to try, can you set the Max MHz profile in the Memory timing profile section and seeing if D1 then shows up. Set DRAM frequency to DDR3-1333.


Same thing 12gb only 😞
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Raja
Level 13

‎04-02-2012 02:28 AM

RMA, I think.
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