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RAM issue with Asus P6T Deluxe, X58, Socket-1366

post #1 of 8
Thread Starter 
I have an Asus P6T Deluxe, X58, Socket-1366 motherboard that originally came with Corsair TWIN3X 1333MHz DDR3, 3GB that worked fine.

I then upgraded to Corsair XMS3 DDR3 1333MHz 12GB CL9.

This fits exactly in the RAM slots of the MB, but the BIOS and Windows 7 64bit only recognize 8 of the 12Gb RAM.

I have updated to the latest version of the BIOS from Asus, and also removed and re-inserted the CPU (new cpu detected) but the issue remains the same. Only 8 of 12 Gb RAM found.

I find it strange that it finds some of the RAM but not "nothing or all".

Is there a BIOS setting I should change? Is this memory amount not compatible?

Help greatly appriciated

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post #2 of 8
This guide is absolutely perfect for you

http://i4memory.com/ramdetect
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Beast
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i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
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Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
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post #3 of 8
May be a dead stick :/ Try each individually and you will find out.

Memory is compatible for sure.
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post #4 of 8
Did you install the three sticks in slots A1, B1 and C1? See page 2-12 of your manual.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post
This guide is absolutely perfect for you

http://i4memory.com/ramdetect
Ive tried tweaking this but still only get 8/12.. Perhaps 2 sticks are bogus.
post #6 of 8
Thread Starter 
Quote:
Originally Posted by idahosurge View Post
Did you install the three sticks in slots A1, B1 and C1? See page 2-12 of your manual.
6x2. They are taking up all the slots.
post #7 of 8
Here is what you do. Test each individual stick of memory in the primary slot to see if it's recognized (this is usually the second slot from the CPU socket). If each stick is actually recognized, you know the memory is fine. If one stick isn't recognized, that stick is dead and you may RMA. This might take a while but this will be the first step.

Now, populate all slots and mess around with QPI/DRAM voltage. Try setting it between 1.2v and 1.4v in 0.05v increments. If this still doesn't do anything, it could be a memory channel isn't being detected. The memory controller is on the processor- when there is too much tension from the heatsink or it is slightly misaligned in the socket, a memory channel could go poof. Very much what you could be experiencing, since 4 out of 6 are detected (hence a channel has vanished). In this instance, remove the CPU heatsink, remove the CPU, double check for any bent pins in the socket, and reseat the CPU/heatsink carefully. This should fix your problem.
Beast
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Dell XPS Faptop
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Alura :)
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CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
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MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
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Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
Core 2 Duo T5250 @ 1.5ghz Dell 0N6705 Mobile Intel 965 Express 2 x 2GB Hyundai/Kingston DDR2 533mhz 
Hard DriveOptical DriveOSMonitor
OCZ Summit 60GB SSD Slot Load DVD-RW Windows 7 Ultimate x64 13.3 inch 1280x800 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
MonitorPowerCase
Hannspree 24 inch Thermaltake Tough Power TP-750P 750W Gold Cooler Master HAF 932 
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Beast
(14 items)
 
Dell XPS Faptop
(8 items)
 
Alura :)
(11 items)
 
CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
MouseMouse Pad
Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
Core 2 Duo T5250 @ 1.5ghz Dell 0N6705 Mobile Intel 965 Express 2 x 2GB Hyundai/Kingston DDR2 533mhz 
Hard DriveOptical DriveOSMonitor
OCZ Summit 60GB SSD Slot Load DVD-RW Windows 7 Ultimate x64 13.3 inch 1280x800 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
MonitorPowerCase
Hannspree 24 inch Thermaltake Tough Power TP-750P 750W Gold Cooler Master HAF 932 
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Reply
post #8 of 8
Thread Starter 
Every mem stick seems to be ok. I've found that the two middle RAM slots do not register any RAM, but any stick works fine in either of the other 4 slots. Even with all BIOS RAM settings on Auto.
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