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Asus Sabertooth x79 Won't recognize ram in certain slots.

post #1 of 8
Thread Starter 
Hi, everyone. I recently put together a new PC. i7 3930k, G.Skill 2x8GB DDR3 (1600), and MSI 7950. For the life of my I cannot get my ram to run dual channel in the recommend slots. The motherboard recognizes all 16 GB at the two far end beige slots; however nowhere else. I tried a single stick at a time and both had the same results. I've marked in red the slots that do not work. With a single stick I cannot even post. The fans spin, but the memOK light just stays red. redface.gif I'm wondering if I'll have to RMA my motherboard.

Thanks in advance. frown.gif


dc7868.jpg
Edited by Pr0pheT - 6/12/13 at 2:56pm
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post #2 of 8
Asus says to use these slots;
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post #3 of 8
Thread Starter 
Exactly, and I ticked it in red that it does not recognize the ram in D1, in that configuration. mad.gif
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post #4 of 8
If you populate all the dark brown and only one of the tan ones it's going to run in single channel.

2 - brown -- dual channel
4 - brown -- quad channel
4 - brown AND 2 tan -- dual channel
4 brown AND 4 tan -- quad channel
2 brown AND 2 tan -- dual channel

any odd configuration and you'll run in single channel

I think that's right, my brain is a little frazzeled today.

edit:

Also, it's possible to have single bad dimm slots.
 
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post #5 of 8
Also, what bios are you running?
 
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post #6 of 8
Thread Starter 
Thanks Deaf,

I updated to the latest one, thinking that would fix it. Bios version 4005. I tried one stick at a time and the ones minus a red tick-mark in the image above were the only ones that ran with no issue. If I populate the DIMM slots in the recommended config it only detects only one stick of RAM.

I hope I don't have to RMA..... I can run dual channel at the far two beige slots like I said previously, but otherwise it's a no go. frown.gif

Maybe this is simpler:

A1 + C1 = Works for dual channel.
A1 works with single channel
A2 Does not detect RAM. No Post
B1 does detect RAM and will post, but only in single channel.
B2 does not detect RAM. No Post
D2, D1, C2 do not detect RAM and will not Post in single channel.

frown.gif
Edited by Pr0pheT - 6/13/13 at 6:13pm
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post #7 of 8
Yeah, sounds like you got a dud of a board. With 1 sick the dimm slots should work, just in single channel. frown.gif
 
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Play Server
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Intel Xeon L5640 Intel Xeon L5640 Dell R710 Mobo Hynix 144GB DDR3 ECC PC3L-10600R 
Hard DrivePowerCaseOther
Intel X25-M G2 80GB Redundant 840W PSU Dell 710 2.5" - Google Search Appliance Dell Perc H700 Raid Controller 
Other
Dell iDRAC6 Enterprise 
CPUCPUMotherboardRAM
Intel Xeon E5-2670 v1 Intel Xeon E5-2670 v1 SuperMicro X9DRL-iF 64GB Kingston ECC (kvr16r11d4/16HA) 
Hard DriveHard DriveCoolingOS
12x 4TB HGST 5K4000 SanDisk SSD 960GB (cache) Scythe AP-29 FreeNAS 
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by deafboy View Post

Yeah, sounds like you got a dud of a board. With 1 sick the dimm slots should work, just in single channel. frown.gif

I guess I'll get on that RMA frown.gif. Thanks for your help!
Vader
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OptimusPrime
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CPUMotherboardGraphicsRAM
Q6600 @ 3.87 (9x430) Abit IP35 Pro Gigabyte 1GB GTX 460 @ 870/1740/4000 Patriot Extreme Performance & Crucial BallistiX... 
Hard DriveHard DriveHard DriveOS
500 GB SAMASUNG (OS) 750 GB Hitachi (Storage/Games) 1.5 TB WD Green Drive (Storage) Win7 Pro 64 bit 
Power
550W Antec NEOPower 
  hide details  
Reply
Vader
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OptimusPrime
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CPUMotherboardGraphicsRAM
Q6600 @ 3.87 (9x430) Abit IP35 Pro Gigabyte 1GB GTX 460 @ 870/1740/4000 Patriot Extreme Performance & Crucial BallistiX... 
Hard DriveHard DriveHard DriveOS
500 GB SAMASUNG (OS) 750 GB Hitachi (Storage/Games) 1.5 TB WD Green Drive (Storage) Win7 Pro 64 bit 
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550W Antec NEOPower 
  hide details  
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