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BSOD and ram issues, please help!

Last response: in Motherboards
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March 25, 2011 12:11:19 AM

Hi, so heres the problem. I just recently built my friend a new rig and im having issues figuring out what is wrong with his system.

system specs:

Asus Sabertooth x58 mobo
core i7 960
6gb (3x2gb) DDR3 1866 OCZ ram
crucial 128gb SSD
nvidia gtx 570

He will randomly get BSOD memory errors, i forget what the exact error is and i will post it when i can get to his house to check it out. After the BSOD the system restarts and will only register partial ram in windows. Sometimes it will show 2gb, sometimes 4gb. The only way to have the computer re-register the ram is to reseat the ram sticks. I have run memtest86+ on the ram over night for 16 passes with no errors. I also noticed that the mobo auto sets the ram speed to 1066 instead of 1866 and has the timings 7-7-7 instead of its 9-9-9 timings. I have yet to run memory tests with the ram settings to 1866 and 9-9-9, but im not sure if this would make a difference. Any help would be great. Let me know if there is any other information i can post to help. Thanks!

*EDIT*
heres the bsod report


crash dump file: C:\Windows\Minidump\032211-9828-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x70740)
Bugcheck code: 0x1A (0x41790, 0xFFFFFA80005A2010, 0xFFFF, 0x0)
Error: MEMORY_MANAGEMENT
file path: C:\Windows\system32\ntoskrnl.exe


here is another

crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: ntkrnlmp.exe (nt!KeBugCheckEx+0x0)
Bugcheck code: 0x1A (0x41790, 0xFFFFFA80005A2010, 0xFFFF, 0x0)

More about : bsod ram issues

a c 716 V Motherboard
March 25, 2011 12:20:38 AM

Welcome to Tom's Forum! :) 

9/10 Voltage issue. Have you tried AI OC Tuner -> XMP <or> DRAM Voltage -> 1.65v, DRAM Frequency -> DDR3-1866, Manually Set the CAS Timings?

Q - What exact RAM; {I prefer a link}?
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March 25, 2011 12:26:25 AM

Here is a link to the exact ram http://www.ocztechnology.com/ocz-ddr3-pc3-15000-reaper-cl9-edition-low-voltage-triple-channel.html i have tried plugging in the dram voltage manually as well as adjusting the timings to 9-9-9 and speed to 1866. This worked for a few days longer then average but it did end up going to bsod again with the same effect of windows only showing 4gb or 2gb of ram. After this happened i set the voltage, timing, and speed back to auto.
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Related resources
March 25, 2011 12:31:12 AM

Also, i thought this might be helpful in diagnosing the issue. Since the last crash windows only registers 4gb ram (i haven't reseated the ram sticks yet,) but, if i check cpu-z it shows all 6gb of ram.
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a c 716 V Motherboard
March 25, 2011 12:53:41 AM

1866MHz 9-9-9-28 (CAS-TRCD-TRP-TRAS) @ 1.65v

Then add to the equation; QPI/DRAM Core Voltage -> 1.30~1.35v

You 'might' need to increase the BCLK to 160 and if you don't want to OC the CPU Multiplier -> 20 ; 133.3 X 24 = 3.2GHz vs 160 X 20 = 3.2GHz. The reason, the disparity between the RAM Frequency the the IMC 1066; the BCLK reduces this problem but it's typically a problem with 2000 MHz RAM. Otherwise 160 X 24 = 3.84GHz OC.

ref - http://ark.intel.com/Product.aspx?id=37151
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March 25, 2011 1:38:12 AM

ok so i entered in all of the above settings and ran memtest86+ and got instant errors, went back into bios reset it to default settings ran memtest again with no errors, re-entered your custom settings and ran memtest once again and now there are no errors, stepped backwards through the changes setting everything to auto one at a time trying to recreate the errors and couldnt. I am now completely confused and thinking there might be something wrong with the mobo. Also i feel like i shouldnt have to enter all of these custom settings to get the computer to be stable, wouldn't having everything on auto be fine?

I currently have your settings entered in to the bios (except the BCLK). is there any way i can test this to see if system still bsods?
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a c 716 V Motherboard
March 25, 2011 1:54:42 AM

To be clear -- what exact settings have you entered? Q - what happened using AI OC Tuner -> XMP? You can also try XMP with QPI/DRAM Core Voltage -> 1.30~1.35v {assuming the BIOS doesn't lock QPI out}. Under manual 'often' 1N isn't stable, so enter a Command Rate {DRAM Timing Mode} of 2N {2T same thing}.

Ans - RAM faster than 1600 MHz is a PITA, and especially OCZ RAM stinks they're quiting the RAM business and focusing on SSD. I prefer Corsair or G.SKILL.

I really prefer and have always recommended for 6GB kits/X58 CORSAIR DOMINATOR 6GB (3 x 2GB) DDR3 1600 CAS 8-8-8-24-2N Model TR3X6G1600C8 http://www.newegg.com/Product/Product.aspx?Item=N82E168... they easily OC to 1800 MHz.
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March 25, 2011 2:33:36 AM

ok, to clarify what settings i have entered:
frequency - 1866
timing - 9-9-9-28
command rate - 2T
QPI/DRAM Core Voltage - 1.30
DRAM Bus Voltage - 1.65
AI OC Tuner - XMP

switching to xmp had no noticeable effect on stability.

Im not sure if i was clear on my question about not having to enter manual settings. What i meant to ask is if i leave everything to default settings (auto detect) shouldn't the system be stable? FYI the auto detect settings are as fallows:

frequency - Auto (1066)
timing - Auto (7-7-7-20)
command rate - Auto (1N)
QPI/DRAM Core Voltage - Auto (doesn't show actual value so not sure)
DRAM Bus Voltage - Auto (doesn't show actual value so not sure)
AI OC Tuner - Auto

Thanks once again for all the help so far, i appreciate it very much!
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a c 716 V Motherboard
March 25, 2011 2:29:37 PM

Yep, running at Default the RAM should be stable and the RAM should also run at 1.5v. Meaning the 1.65v is for Rated Frequency. Under CPU-Z all of the 'SPD' JEDEC Frequency, CAS, and Voltage should be listed including 'XMP-1866' and the RAM should run stable for those values.

For me 1066 is there for a matter of minutes as I immediately tweak the BIOS after finishing installation of components and its first boot.

Further, there are several things that can cause memory related errors. If ANY Frequency, CAS or Voltage is not per 'spec' then the fault is mine. RAM > 1600 MHz is difficult as I mentioned earlier - so I don't shop Frequency + CAS -- I shop QUALITY OF IC.

If you ever add a second set then more than likely XMP won't work and probably will cause post failure -- so I never use it.
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March 26, 2011 1:19:57 AM

I checked cpu-z and i dont see xmp-1866 listed under the SPD tab.

Being that the system should be stable with default settings and it is not, all the BSOD issues happen with default settings. I feel like the only thing left to try is to warranty the motherboard and ram.

Do you have any other suggestions before i send everything back to the manufacturer?
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a c 716 V Motherboard
March 26, 2011 2:28:50 AM

As I mentioned before, I'd start with the RAM, exchange it, and look at the Dominator's listed above, they have an excellent IC. I really don't anything's wrong with the MOBO.

Q - In the SPD tab, what does it say under the column furthest right?
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a c 716 V Motherboard
March 26, 2011 12:28:53 PM

Hmm... obviously it is 'Rated' at 1866 MHz, but I really expected to see XMP-1866. Further, I'm surprised AI OC -> XMP was stable. :??: 

Get new 'Good RAM'. If you want 1866 then -> CORSAIR DOMINATOR GT 6GB (3 x 2GB) DDR3 1866 Desktop CMT6GX3M3A1866C9 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

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April 8, 2011 1:34:42 AM

Ok, so it will have been a week tomorrow that his system has been running with manual settings JEDEC#3.



The system has yet to BSOD but will show 4GB of ram from time to time which I'm told only takes a quick system restart to fix and show the full 6GB.

He already went over budget building the system so buying a new set of ram would be the last possible solution.

Q: Do you think the hardware is faulty and i should start the warranty process, or do you think that even if i would warranty the mobo/ram i would still have this issue and i just need to find the right settings for the ram?

On a side note, i cant seem to find anyone else having this problem with the same mobo/ram combo, and i doubt i am the only one to have purchased them together.

Thanks for all the help!
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