Question System unstable after adding extra RAM

Apr 13, 2020
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Hi all,

Since I added some extra RAM sticks (2x4GB) next to the original (2x4GB) RAM sticks, I tend to get alot of BSOD's. See the relevant information below, the 2 new sticks I bought are practically the same as the 2 original ones, except these are the LP (low profile) versions. Timings and frequency's are the same. My CPU is set to the XMP-profile in BIOS and the memory is set to run at 1600Mhz. I placed the memory sticks in alternating order, such that the old ones are in the blue slots and the new ones are in the black slots.

MOBO: Asus p8z68-v pro
CPU: Intel Core i7-2600K
GPU: Nvidia GTX 1070
SSD1: Samsung 840 Evo 250GB
SSD2: Samsung 860 Evo 1TB
Memory (original): Corsair CMZ8GX3M2A1600C9 (2x4GB)
Memory (new): Corsair CML8GX3M2A1600C9 (2x4GB)

Current BIOS settings:
https://www.upload.ee/image/11820540/2020-05-02_15.46.32.jpg
https://www.upload.ee/image/11820546/2020-05-02_15.46.46.jpg

I have searched for related issues on this forum and saw different suggestions. However, since I'm not that much of a geek to comfortably play around with these settings, I would like to ask your advice for my personal situation. What can cause these BSOD's? Should I increase some voltage? DRAM or VCCIO (VCCSA is not to be found on my BIOS)? Should I downclock from 1600Mhz to 1333Mhz? And what are the effects of doing so?

Thanks in advance for replying.

Kind regards,

Wouter
 
Last edited:
Jun 4, 2020
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I am a noob myself. But I once asked one of the computer guys in the store that I want to buy 2X8GB ram to add more memory to my existing 2x8GB RAM so that I have 32GB of RAM in total. Then he told me that it is better to buy 2x16 RAM and just use those two instead of adding 2 more because it might cause instability.
So I think you should not risk getting the BSOD and just buy a new 2X8GB. Not sure what other experts going to suggest though
 
Apr 13, 2020
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That would be the simple solution, however it should be possible to make this work. If anyone else has suggestions, I'd like to hear.
 

DMAN999

Reputable
Ambassador
I would try changing the DRAM Frequency setting in the BIOS from 1600 to 1`333 and see what happens.
As for memtest, run Memtest86 from a USB stick with all 4 RAM sticks installed and see if it throws any errors.
If it does then try running Memtest86 with just one stick installed at a time and see if you get any errors.
That will tell you which/if any sticks of RAM are bad.
https://www.memtest86.com/downloads/memtest86-4.3.7-usb.img.zip
 
Apr 13, 2020
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I'll try changing voltage and downclocking DRAM frequency. Does the last have any influence on performance?

I will keep you updated.
 

DMAN999

Reputable
Ambassador
Lowering the Frequency will reduce the RAMs performance.
BUT if it is unstable (therefore unusable) at 1600 but stable at 1333 , then 1333 is your only real viable option, No ?

And IMO the most likely reason for your issue is the fact that you have 2 different RAM kits installed instead of one 4 stick kit.
RAM not sold as a kit is NOT guaranteed to run at the rated speeds.
 

Zerk2012

Polypheme
Ambassador
Hi all,

Since I added some extra RAM sticks (2x4GB) next to the original (2x4GB) RAM sticks, I tend to get alot of BSOD's. See the relevant information below, the 2 new sticks I bought are practically the same as the 2 original ones, except these are the LP (low profile) versions. Timings and frequency's are the same. My CPU is set to the XMP-profile in BIOS and the memory is set to run at 1600Mhz. I placed the memory sticks in alternating order, such that the old ones are in the blue slots and the new ones are in the black slots.

MOBO: Asus p8z68-v pro
CPU: Intel Core i7-2600K
GPU: Nvidia GTX 1070
SSD1: Samsung 840 Evo 250GB
SSD2: Samsung 860 Evo 1TB
Memory (original): Corsair CMZ8GX3M2A1600C9 (2x4GB)
Memory (new): Corsair CML8GX3M2A1600C9 (2x4GB)

Current BIOS settings:
https://www.upload.ee/image/11820540/2020-05-02_15.46.32.jpg
https://www.upload.ee/image/11820546/2020-05-02_15.46.46.jpg

I have searched for related issues on this forum and saw different suggestions. However, since I'm not that much of a geek to comfortably play around with these settings, I would like to ask your advice for my personal situation. What can cause these BSOD's? Should I increase some voltage? DRAM or VCCIO (VCCSA is not to be found on my BIOS)? Should I downclock from 1600Mhz to 1333Mhz? And what are the effects of doing so?

Thanks in advance for replying.

Kind regards,

Wouter
Bump the voltage up to 1.55 leave the speed at 1600.

From their could need to change some of the secondary settings.
 
Apr 13, 2020
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Thank you for all your replies.

Bumping the voltage to 1.55 and 1.60 did not work. I got it running for now at 1333Mhz, but need to check some longer period of time.

If it might stay stable now, what is better? 8GB with 1600Mhz or 16GB with 1333Mhz?
 
Apr 13, 2020
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Not exactly sure when it requires 16GB, I was mainly trying to upgrade RAM in order to try and get rid of some FPS drops in encounter while gaming.
 

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