2-8GB only recognized as 8192MB total memory

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Paco Loco

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Jul 7, 2015
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I just got a barebones computer in today because I didn't want to go through the hassle of installing a CPU and motherboard in a case (lazy I know). I decided to install my 2 1TB hard drives in the rig and instead of using my DDR3 sticks I decided to go with brand new ram because I wanted to get 8 GB sticks as the new motherboard supports up to 64GB in 4 slots. The problem I am having is that the computer is only recognizing 8GB instead of 16GB. Here are my specs

Asus 55BM-Plus Motherboard
G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL10D-16GBXL
AMD A-8 6600K

The odd thing is both sticks are recognized by the bios.. It shows a stick in A1 and B1 and no sticks in A2 and B2 like it is supposed to. I have DOCP turned on and set to 1866 but it wasn't recognizing both before turning that on either. In the BIOS it shows 8192MB total memory but in the advanced options where you can click on individual DIMMS it shows the full stats for A1 and then nothing for A2 and the same stats for B1 as A1 as it should. The memory is installed correctly and shows up but the system isn't using it in the BIOS or Windows at all. I also checked the Resource Monitor in windows and there is only 828MB in Hardware Reserved so it's not reserving it for hardware it's just not showing up. The stick was brand new and had no problems installing. I tried A2 and B2 first (same color) and had the problem then switched to A1 and B1 and the problem remains (A1 and B1 are the same color and different color from A2 and B2). I'm stumped any help would be awesome, thanks

Update: http://
As you can see by the image CPU-Z shows it is there but the system can't use any of it for some reason.

Forgot to mention I am running Windows 7 Ultimate 64. I looked for memory remapping in the bios and can't seem to find that option.
 
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Are the sticks a kit or separate sticks?

Your mobo spec says -
4 x DIMM, Max. 64GB, DDR3 2400(O.C.)/2250(O.C.)/2200(O.C.)/2133/1866/1600/1333 MHz Non-ECC, Un-buffered Memory
Dual Channel Memory Architecture
Support AMD Memory Profile (AMP) memory

So it should work.

Are they on your mobo approved memory list?
 
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Right it`s down to the version of windows you may have.

If you are using a 32bit version of windows, after windows has loaded it should show a total of 3.25 of overall system memory available.

In that case you need to install a 64 bit version of windows if not installed as your current OS.
The 64 bit version of windows can support and use 8gb upward to 256Gb if your board can take the density and capacity of the ram modules supplied.

If you have a 64 bit version of windows, and more than 4Gb of memory fitted you must make sure in your bios that the memory re mapping option in the page of the bios relating to memory is enabled, by default on some boards at factory settings of the bios it is disabled. make sure the memory mode of Ganged if it exists in the bios is set to enabled also.
And that the option of EEC mode for the memory is disabled if you bought unbuffered or buffered ram only with no EEC correction.
It causes problems with windows sometimes if EEC mode is enabled.

Please also make note that if your mobo has switches on it for over clocking it must be enabled on the board to that mode before trying to Use Selected mode of Dcop or overclocking and auto tuning option of the bios. Model board related.
If enabled, and you have the switch on the mobo there should be a green Led lit up next to it if the board has such a switch.
There may be a second one that deals with auto setup and power config for Cpu and memory aand power phase EPU it must also be enabled when the bios mode you selected of DOCP is selected.

It sets the voltage for the XMP value of the ram.
Advanced mode must be selected in your bios to reach the extra options stated and provided.

 
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Yup, thanks for noticing that. It wouldn't be showing 8GB as I said it does if I was running 32 bit but I appreciate the help guys. The problem is there isn't any memory mapping option anywhere in the BIOS I literally checked every screen and every option including the advanced options. I am going to go back and check to see if there is a ganged and EEC option and will report back. Also the PIC I linked shows that CPU-Z is showing 16GB which is really odd to me. Thanks again for all the help so far.

And yes the 2 sticks were bought as a kit. Does the fact CPU Z is showing single channel have anything to do with it not working?

Update: There is no ganged or ungaged setting in the BIOS, there is no EEC setting. There is only manual voltage, and latency settings as for as memory really. As far as any switches and settings on the motherboard itself there aren't any switches pertaining to overclocking and as I said this was a problem before turning DOCP on when the memory was ready at the default 1333MHZ. There is a a MEMOK button maybe I should push that to force it to check? As far as the BIOS again I promise I'm not missing the settings that are suggested. I have the UIEF (whatever the actual abbreviation is) ASUS BIOS where it makes things really simple for the user but doesn't have a ton of options even in advanced options i.e. not using the dummy graphical interface.
 
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It's a stock CPU cooler that came with the CPU. Looks like the stick was bad as the system wouldn't boot up with one installed only but would boot up with the other installed only. RMA'd it on New Egg which is a PITA but at least I don't have to go crazy thinking about it anymore.
 
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