BSOD after combining 2 RAMs with same timings, frequency and voltage

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drgman3

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Sep 27, 2013
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Recently I got new RAM - Atada DQVE1A16 1GB DDR2 (800/5-5-5-18) for my 4th nemory slot that was empty. My other RAMs are:
2x Atada 1GB (667/5-5-5-15)
1x Apacer 1GB (800/5-5-5-18)
I didnt find same apacer ram so I find ram with same frequency and timings. After I started PC with all 4 rams I started getting BSOD, mostly while playing. So I tested all rams - 0 errors. Then I plug off that new ram and all BSODs were gone. So I though that it is caused by broken ram but when I replaced that APACER ram with that new one, no bsoding at all. But when after that I replaced one 667 ram with that APACER so both 800mhz rams were in I started crashing again.
So what can I do here ? I really have little knowledge about doing voltage and timing adjustments so I need help. I think there is no reason why should be these two rams incompatible with each other when every their spec is matching. I also tryed every possible combination of seating them in mobo.

My mobo is p5b-vm se with latest bios update
 
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drgman3

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Sep 27, 2013
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Well, you can pick up every possible BSOD here : http://imgur.com/LqkjPre
All of them where while I got both RAMs inside. No BSOD when only one of them were inside (currently I have 2x 667 and that new 800 and I have 3 rounds in BF4 and no BSOD so far) Also I wasnt have single BSOD in past 6 months with my original 3 RAMs
 
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drgman3

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Sep 27, 2013
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My Bios is really against overclocking, only modes for DRAM ("memory voltage") are native 1,8v and 1,9v... I tryed 1,9v but with any improvement, also I got "overclocking failed" screen several times.
And about "North Bridge" voltage, well I didnt found any setting called like this...
 
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MasterMace

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Oct 12, 2010
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Normally I'd pull the codes from a list, but judging by what you're saying, your RAM wasn't installed right. This could be 1 of 2 things.

First is that you didn't match the 5-5-5-18s. Make sure your 800mhz 5-5-5-18 sticks are in the same color RAM slot. i.e. your 667 5-5-5-15s in the White, your 800 5-5-5-18s in the black.

Second is the timings in the BIOS. Make sure you set the timings manually to the ones listed as the default timings in the SPD. You can usually view this in your BIOS, if you can't you can view it in CPU-Z or AIDA64 (or whatever it's called), or you can view it on the packaging, or online.

As for the errors themselves, there's a whole slew of solutions if the errors weren't related to the installation. Some of them are as follows:

increase vcore [multiples] (voltage of your CPU core)
increase RAM Voltage
corrupted OS File
bad stick of RAM
increase QPI/VTT voltage
RAM Timings
Update Windows
Update Drivers (Audio)

These very well might be separate issues, but until we make sure your RAM was installed properly, I can't say. What I can say is that your computer is shutting down to prevent you from destroying it.
 
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MasterMace

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CPU-NB is different from Northbridge, but the previous poster didn't read enough. CPU-NB is AMD. You're looking for QPI/VTT with regard to that. Please view my previous post before adjusting voltages.
 
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