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ga-x58a-ud3r shows 18 gig's of ram but only using 12 gigs

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May 17, 2014 9:15:01 PM

how or what changes do I need to make to get it running on all 6 ram sticks
a c 264 V Motherboard
a b } Memory
May 17, 2014 9:23:47 PM

you most likely have reserved memory for graphics ect..this is normal.

Are you saying there is 18GB total, and only 12GB available, then this is the case.
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May 17, 2014 9:31:57 PM

This was not an issue before, I had all 6 stick in and it worked fine. I pulled 3 of them to use in another computer for a bout 2 months and now when I put them back in its not working as it should. this is want i'm getting http://s137.photobucket.com/user/exe16/media/BLAR_zpsa1...
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a c 264 V Motherboard
a b } Memory
May 17, 2014 9:35:23 PM

you tried putting the channels around the other way, swapping left three with right three?
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May 17, 2014 9:37:13 PM

unknownofprob said:
you tried putting the channels around the other way, swapping left three with right three?


yes, same results
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a c 264 V Motherboard
a b } Memory
May 17, 2014 9:41:45 PM

Have you run a PC test to see if you actually do have 18GB installed, As far as I can tell, it does have 18GB usable, rest taken by graphics and cache.
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May 17, 2014 9:52:12 PM

unknownofprob said:
Have you run a PC test to see if you actually do have 18GB installed, As far as I can tell, it does have 18GB usable, rest taken by graphics and cache.


I am running an EVGA GTX 670 Graphics Card if there is some place I have ram allocated to video I have no idea where that would be set at
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a c 264 V Motherboard
a b } Memory
May 17, 2014 10:00:09 PM

Oh, I see, BIOS knows that there is ram in the slot, but appears to have no memory.

Have you mixed 2GB sticks with 4GB? Some OS's hate this.
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May 17, 2014 10:03:30 PM

unknownofprob said:
Oh, I see, BIOS knows that there is ram in the slot, but appears to have no memory.

Have you mixed 2GB sticks with 4GB? Some OS's hate this.


im running 2 triple channel kits corsair dominator 3x4Gb and 3x2GB they had been working and showing fine I then pulled the 3x2gb to use in another computer for a month and now there now working as they did before
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a c 140 V Motherboard
a b } Memory
May 17, 2014 10:06:02 PM

Sounds like the MOTHERBOARD slots are damaged.
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a c 264 V Motherboard
a b } Memory
May 17, 2014 10:06:07 PM

yeah, some motherboards do this when taken out sometimes. Did you update your OS recently when the ram sticks were out?
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a c 140 V Motherboard
a b } Memory
May 17, 2014 10:09:41 PM

unknownofprob said:
yeah, some motherboards do this when taken out sometimes. Did you update your OS recently when the ram sticks were out?


Not relevant if he can't see all sticks in the BIOS.
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a c 264 V Motherboard
a b } Memory
May 17, 2014 10:10:37 PM

he used to.
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May 17, 2014 10:19:08 PM

photonboy said:
Sounds like the MOTHERBOARD slots are damaged.


so I decided to pull the ram from slots 3 and 4 and then it still shows 12 gigs with 5 and 6 being used so slots not the issue
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a c 140 V Motherboard
a b } Memory
May 17, 2014 10:20:09 PM

*Try using FOUR sticks in:
a) Dual, and
b) Triple

See your motherboard Manual (pg. 16).

If BOTH of these work, but all six sticks do NOT then the problem is Slot#5. If the Dual-Channel with four sticks passes the left four slots work. If the Triple-Channel with four sticks fails after the Dual-Channel passes the Slot#6 is defective (Slot#5 may be as well).

So again, if ALL the positions pass except with SIX sticks it's Slot#5 that is defective.

Make sense?

Regardless, it sounds like you may contact Gigabyte.
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May 17, 2014 10:20:20 PM

after the test with removing ram from slots 3 and 4 I reinstalled the ram in to them and now it is showing 18 gigs and working as it should be
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a c 264 V Motherboard
a b } Memory
May 17, 2014 10:21:54 PM

glad to know it works, if you have any other questions just ask and we'll gladly help.
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a c 140 V Motherboard
a b } Memory
May 17, 2014 10:23:50 PM

Possibly not fully seated?

Run a full test with MEMTEST just to be sure with the optimal profile setup in the BIOS.
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May 17, 2014 10:24:08 PM

Thanks for the help :)  not sure why it dident work the first 6 times I reseeted the ram lol
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a c 264 V Motherboard
a b } Memory
May 17, 2014 10:26:36 PM

6 times!, Did they fully click in when you did it the other times?
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!