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Bios says I have 2x4gb of ram but I have 2x8gb?

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  • DIMM
  • Memory
Last response: in Memory
February 23, 2014 1:54:07 AM

That isn't the only issue, but to explain I have to give you the backstory.

I traded a ps4 for this system, i5 2500k, Intel Burrage Board DP67BG, 16gb (2x8gb) of corsair xms3 1600 9c, and a r7770.. Plus HD monitor g15 kb and g35 headset, but when I got it, didn't notice at the time, the RAM was in dimm 2 and dimm 4.

Noticing it while upgrading to a gtx 760, I tried to fix the problem by moving the chip in dimm 4 over to dim 1, went to turn it on and I heard 3 loud beeps and the post code displaying 27. Both indicating (27 Initializing memory, such as ECC init) so I shut it off put it back to dimm 4. When I go into bios, I see my system is reading 2x4gb sticks instead of the 2x8gb I have in there. And strangely I'm forced to run it in single rather than dual.. Pretty frustrating. Any ideas?


Recent update, So I noticed my board only supports 1.5v and my ram is 1.65v, could that be the issue, the same page I found that info says anything higher that 1.65v could harm my board but no notices of anomalies like this? im kind of still learning all of this, but it seems like maybe my board is cutting my rams output in half to avoid running the 1.65v? could that be it? im goint to play it safe and change these out for 1.5v, to avoid wear on my mobo and cpu. Or do other people run 1.65v on a 1.5v board?

More about : bios 2x4gb ram 2x8gb

a b } Memory
February 23, 2014 1:08:45 PM

You'll have to downvolt the 1.65v RAM to 1.5v for it to run.

EDIT:

Actually scratch that, your motherboard should automatically downclock it to a supported speed, so it should work, just not at the advertised speed. I think you have to try to manually OC it to the advertised speed, hopefully you shouldn't need a voltage increase.
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a c 5390 } Memory
February 23, 2014 4:21:39 PM

Do you have the latest BIOS? Could try resetting the CMOS then install - also what OS are you running, need at least Win 64bit Home Premium for 16GB
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February 23, 2014 4:36:40 PM

pcgaming98 said:
You'll have to downvolt the 1.65v RAM to 1.5v for it to run.

EDIT:

Actually scratch that, your motherboard should automatically downclock it to a supported speed, so it should work, just not at the advertised speed. I think you have to try to manually OC it to the advertised speed, hopefully you shouldn't need a voltage increase.


well the speed on BIOS says 1600, but that's with it showing 2x4gb. and also my BIOS only gives me the option of 1600 or higher, I considered dropping it down to 1333 but I don't have that option.


Tradesman1 said:
Do you have the latest BIOS? Could try resetting the CMOS then install - also what OS are you running, need at least Win 64bit Home Premium for 16GB


yea I have windows 7 64gb premium. So I scratch that possibility.
That was my next move, not too confident with the idea, I heard just, write down bios settings, remove ram, pop my mobos battery out, re install RAM, wait 15 mins, then pop battery back in, set settings to what they were before.. lol seems daunting, is there other ways to go about it?


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February 23, 2014 4:51:21 PM

Ahh man.. I feel like an idiot. Lol... But I have come clean, one of the issues wasn't even an issue.. About those 16gb, I made the mistake of taking the label on the ram literally, turns out after researching the model number, the two sticks are a combo so they state 8gb on each stick but they are actually 2x4gb sticks.. Kinda dumb if you ask me. I'll do more research next time sorry guys.

Now I wish that was it and I could breath easy, but I still have the issue of the ram not allowing me to run in dual channel. Actually, the two dimm slots closest to the CPU will not read the ram, is that something I can fix with a CMOS reset? Thank you guys for all your help.
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a c 5390 } Memory
February 23, 2014 5:38:59 PM

Give it a try, might also loosen your CPU cooler then snug it back down, not super tight, but snug, you get too much pressure on on one side or the other it can affect the connection of CPU and socket and throw the MC off and people often loose access to one of the DRAM channels from it
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February 23, 2014 5:55:56 PM

looks like my seidon 120m was a little tight on the right side (side my dim slots are on) Awesome diagnoses, you're a pro! super simple fix too, just loosed the right side first( was going to try the left next lol) but right after I closed it and set the ram into the dual channel slots. it booted right up!
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a c 5390 } Memory
February 23, 2014 6:13:13 PM

It can be a common problem, seen it all to many times, a great thing about the forums, is to pick up odds and ensds like this, have seen people who went to shops and shelled out $100 or more and nothing solved.......I'll send you a bill ;)  Just kidding, have fun
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February 23, 2014 7:04:24 PM

Tradesman1 said:
It can be a common problem, seen it all to many times, a great thing about the forums, is to pick up odds and ensds like this, have seen people who went to shops and shelled out $100 or more and nothing solved.......I'll send you a bill ;)  Just kidding, have fun


to be honest I was getting to that point, but I have a microcenter close and their return policy is awesome. lol. Thanks again!
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a c 5390 } Memory
February 23, 2014 7:18:01 PM

No worries, have fun !
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