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Quad Channel Memory Compatibility

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  • Memory
  • Blue Screen
Last response: in Memory
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December 20, 2012 11:42:02 AM

Hello,

I have just purchased a new custom PC with G.Skill 8GB x 4 x 2 sets.

I am facing bluescreen issue which has been narrowed down to RAM.

My question is, can different set of quad channel RAM works well without causing any issue or does it matter at all? In this case it is 8GB x 4 sticks x 2 sets.

The serial number of both sets has a huge gap where each set's stick has a next to each other serial number.

The BSOD message is something like 'DRIVER_IRQL_NOT_LESS_OR_EQUAL' 0xd1 or 'KMODE_EXCEPTION_NOT_HANDLED' 0x1e from ntoskernel.exe.

FYI, here is the full spec:
Intel i7-3930k
Asus P9X79 Pro
G.Skill 8GB x 4 x 2 sets
Asus GTX650Ti
Corsair ForceGS 240GB
Windows 7 Professional x64

The BIOS setting is default with no manual OC or Intel XMP.

Appreciate your opinion and thanks in advance.

More about : quad channel memory compatibility

Best solution

a b } Memory
December 20, 2012 12:04:57 PM

Different sets of ram cards often create problems like crashes and blue screens.
Did you buy the sets at the same time?
Are the timings, voltages same for both the sets?
Have you placed one set in one coloured slots and other set in other coloured slots?
Try resetting the bios settings,
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a c 347 } Memory
December 20, 2012 12:05:58 PM

Your error isn't necessarily being caused by your RAM. In your BIOS do the following:

BIOS:
Press F5 ; Load Optimized Defaults
AI Overclock Tuner -> XMP and use Profile 1
Press F10 ; Save & Exit = 'Yes'

Q - What exact G.SKILL is installed?

If you have the Ares then you'll need to add the following to the BIOS settings above:

BIOS:
VCCSA Voltage -> Manual
VCCSA Voltage -> 1.20v~1.25v ; 1.20v is the max I'd use but G.SKILL recommends 1.25v

Create a bootable Memtest CD/DVD/USB and run for 4-passes or at least overnight. 64GB takes a long time to properly test. I never install any OS until I test the RAM, doing so risks OS corruption. If there are any errors quickly then stop the Memtest and raise either or both the DRAM A/B & C/D to +0.05v above 'Rated' and test again.

Memtest (ISO) - http://www.memtest.org/#downiso
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December 20, 2012 1:22:20 PM

jaquith said:
Your error isn't necessarily being caused by your RAM. In your BIOS do the following:

BIOS:
Press F5 ; Load Optimized Defaults
AI Overclock Tuner -> XMP and use Profile 1
Press F10 ; Save & Exit = 'Yes'

Q - What exact G.SKILL is installed?

If you have the Ares then you'll need to add the following to the BIOS settings above:

BIOS:
VCCSA Voltage -> Manual
VCCSA Voltage -> 1.20v~1.25v ; 1.20v is the max I'd use but G.SKILL recommends 1.25v

Create a bootable Memtest CD/DVD/USB and run for 4-passes or at least overnight. 64GB takes a long time to properly test. I never install any OS until I test the RAM, doing so risks OS corruption. If there are any errors quickly then stop the Memtest and raise either or both the DRAM A/B & C/D to +0.05v above 'Rated' and test again.

Memtest (ISO) - http://www.memtest.org/#downiso


I have tried to activate XMP and select the first profile couple days back but the BSOD still happens.

I am using G.Skill RipjawsZ PC12800 CL10: http://www.gskill.com/products.php?index=431

Before posting, I have tried to use Memtest86+, Windows Memory Diagnostics and they always passes, at least two passes. I did not try longer as the result is tend to be positive.

The only test that could trigger the BSOD (other than waiting) is to use Prime95 by using all the RAM. BSOD happen within 20-30mins.

Still investigating. Any feedback are welcome.
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a b } Memory
December 20, 2012 2:03:22 PM

Try using just one stick of RAM in the slot 1. You might get lucky and the machine wont boot and then you will know which stick is faulty. If they all boot. Try each one again using Prime95 and see if you get a BSOD.
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a c 347 } Memory
December 20, 2012 2:23:51 PM

A couple of things, first I never assume my RAM is okay and running Prime95 selecting 'all' of your RAM will 100% of the time end-up as a 'fail.'

BIOS, for Windows 7 I recommend the latest (.ROM) v1203 and for Windows 8 the latest (.CAP) v3203; frankly none of the (.CAP) versions have been spectacular. The only (2) methods for updating are ASUS EZ Flash 2 or ASUS USB BIOS Flashback. Know that any update of your BIOS will fail the Diagnostic CMOS 'Pattern Test' ; see - http://www.overclockers.com/forums/showthread.php?t=709... If you updated the BIOS then my recommendation is to re-flash with the same exact version i.e. twice.

My preference is to use AIDA64 Extreme Edition - http://www.aida64.com/downloads with all options selected overnight - http://i1013.photobucket.com/albums/af254/Jaquith/AIDA6... Otherwise Prime 95 Small FFT is fine.

Drivers - I assume that you have installed all of the latest for your OS - http://www.asus.com/Motherboards/Intel_Socket_2011/P9X7... starting with the Chipset (first) and are not using any ASUS Utilities e.g. ASUS AI Suite II. Doing so overwrites any of the manual BIOS settings and in general I'm not a fanboy of any utilities that are BIOS invasive. ASUS AI Suite II never could OC like I do -> http://valid.canardpc.com/show_oc.php?id=2320509

Further, in the Device Manager I assume that there's no (? or !) unknown devices listed. You might want top run and schedule both of these options for your primary SSD - http://i1013.photobucket.com/albums/af254/Jaquith/Scan-... In addition I would run MSCONFIG and select Diagnostic mode and see if there's some conflict.

I recently had a couple 'BAD POOL HEADER...' and '1E' errors seemingly originating from my primary Corsair SSD and the 'SFC' (scan) seemed to correct the problems...knock on wood.

/edit - only use the Intel SATA3 ports for you boot drive(s) and never the Marvell SATA3 ports.
/edit - the only SSD tweak is to manually set the Page File to min & max 2048MB, and then run WEI once so Windows knows that you have an SSD installed.
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December 21, 2012 4:11:30 AM

Xttony said:
Different sets of ram cards often create problems like crashes and blue screens.
Did you buy the sets at the same time?
Are the timings, voltages same for both the sets?
Have you placed one set in one coloured slots and other set in other coloured slots?
Try resetting the bios settings,


Thanks for the tips, they are purchased at the same time, but the serial numbers have a huge gap:
1st set: 124312002872xx
2nd set: 123518006130xx

There is a little bit different of latency timings:
CHA CHB CHC CHD
DRAM RTL (D0 R0) 39 39 39 39
DRAM IOL (D0 R0) 5 5 5 5
DRAM RTL (D0 R1) 39 39 39 39
DRAM IOL (D0 R1) 5 5 5 5
DRAM RTL (D1 R0) 39 39 39 39
DRAM IOL (D1 R0) 5 5 5 6
DRAM RTL (D1 R1) 39 39 39 39
DRAM IOL (D1 R1) 5 5 5 6

Note the different IOL value in CHD.

Just to be clear, say I have a set of 4 sticks RAM x 2 sets, if I put these 4 sticks from the first set into A1, B1, C1 and D1 slots and the second set into A2, B2, C2 and D2. Is this the correct method?

The voltage for all DIMMs are identical, 1.500 V

I have not tried to swap the DIMMs to the other colored slots, let me try after get another crash. BIOS setting has been reset and now XMP Profile #1 is selected. Thank you for your help so far.
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a b } Memory
December 21, 2012 6:53:20 AM

First reflash your bios if can or just reset the bios settings.

Try putting the cards with same timings (5-5-5-5) in A1 A2 B1 and B2 and the other set (5-5-5-6) in C1 C2 D1 and D2.

According to my logic A1 and A2 should have their own memory controller, same goes for B C and D.

Then try changing the timing manually in your bios (if there are settings to do that individually for different memory controllers).
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December 21, 2012 7:01:24 AM

jaquith said:
A couple of things, first I never assume my RAM is okay and running Prime95 selecting 'all' of your RAM will 100% of the time end-up as a 'fail.'

BIOS, for Windows 7 I recommend the latest (.ROM) v1203 and for Windows 8 the latest (.CAP) v3203; frankly none of the (.CAP) versions have been spectacular. The only (2) methods for updating are ASUS EZ Flash 2 or ASUS USB BIOS Flashback. Know that any update of your BIOS will fail the Diagnostic CMOS 'Pattern Test' ; see - http://www.overclockers.com/forums/showthread.php?t=709... If you updated the BIOS then my recommendation is to re-flash with the same exact version i.e. twice.

My preference is to use AIDA64 Extreme Edition - http://www.aida64.com/downloads with all options selected overnight - http://i1013.photobucket.com/albums/af254/Jaquith/AIDA6... Otherwise Prime 95 Small FFT is fine.

Drivers - I assume that you have installed all of the latest for your OS - http://www.asus.com/Motherboards/Intel_Socket_2011/P9X7... starting with the Chipset (first) and are not using any ASUS Utilities e.g. ASUS AI Suite II. Doing so overwrites any of the manual BIOS settings and in general I'm not a fanboy of any utilities that are BIOS invasive. ASUS AI Suite II never could OC like I do -> http://valid.canardpc.com/show_oc.php?id=2320509

Further, in the Device Manager I assume that there's no (? or !) unknown devices listed. You might want top run and schedule both of these options for your primary SSD - http://i1013.photobucket.com/albums/af254/Jaquith/Scan-... In addition I would run MSCONFIG and select Diagnostic mode and see if there's some conflict.

I recently had a couple 'BAD POOL HEADER...' and '1E' errors seemingly originating from my primary Corsair SSD and the 'SFC' (scan) seemed to correct the problems...knock on wood.

/edit - only use the Intel SATA3 ports for you boot drive(s) and never the Marvell SATA3 ports.
/edit - the only SSD tweak is to manually set the Page File to min & max 2048MB, and then run WEI once so Windows knows that you have an SSD installed.


First of all, thank you for the detailed help. My BIOS already running the latest version (3203). There was one unknown device under device manager, which turned out to be the motherboard bluetooth, the driver is installed now.

SFC scan does not find any issue as well. WIE has been run :)  and the boot drive is connected to the X79 SATA3 controller.
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December 21, 2012 7:41:00 AM

cball1311 said:
Try using just one stick of RAM in the slot 1. You might get lucky and the machine wont boot and then you will know which stick is faulty. If they all boot. Try each one again using Prime95 and see if you get a BSOD.


Tried all of them - one by one, works well :) 
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December 21, 2012 11:40:44 AM

The system has been stable for a couple of days, I'm glad of this result.

I could not find the root cause of previous BSODs, but re-arranging the RAM sticks suggested by Xtonny seems to fix the problem. On top of that I reverted my OC setting to XMP Profile #1 without adjusting anything else.

Thanks for all the great responses and happy holidays!
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December 21, 2012 11:41:05 AM

Best answer selected by wikimee.
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