Question Errors in MemoryTest86 and random crashes in games.

[Shortmoon]

I have been battling issues with random memory related crashes for over a year now. I've even rebuilt the PC into a new motherboard at this point. (the old one was faulty and replaced) The issues just seem to persist. Ive run the test with all default settings, XPM on, and with the "AI overclock" both on and off. The BEST I have gotten was 1 pass (out of 4) with 0 errors. But the average is 2 or 3.

Do I need to replace all my memory? Any help\advice is appreciated!

Specs:
CPU: 13900K
MB: ASUS Z690 Glacial Extreme (latest BIOS)
RAM: 4x16gb Gskill trident DDR5 6600 (Running at 5600)
GPU: RTX 4090 ASUS TUF
Boot drive: Samsung 990 Pro

 

[SkyNetRising]

Do I need to replace all my memory? Any help\advice is appreciated!
RAM: 4x16gb Gskill trident DDR5 6600 (Running at 5600)

Try with 2 ram modules from same kit in slots A2 and B2.
Run memtest86.

 

[geofelt]

Most likely, you did not buy a single matched kit of 4 x 16b of ram.
Ram must be matched to perform to advertised specs.
What exactly are your ram part numbers?
You can find them on cpu-z.
If you have two separate kits, then you may well have different xmp settings in each kit, causing confusion.
Try entering the ram settings yourself in the bios but increase the ram voltage a bit higher than normal.
You may need more than 1.4v.
You may have to lower the speed to get a stable memtest run with NO errors.

And... to preserve your 13900K from damage , insure that your motherboard bios is the very latest

 

[Shortmoon]

Most likely, you did not buy a single matched kit of 4 x 16b of ram.
Ram must be matched to perform to advertised specs.
What exactly are your ram part numbers?
You can find them on cpu-z.
If you have two separate kits, then you may well have different xmp settings in each kit, causing confusion.
Try entering the ram settings yourself in the bios but increase the ram voltage a bit higher than normal.
You may need more than 1.4v.
You may have to lower the speed to get a stable memtest run with NO errors.

And... to preserve your 13900K from damage , insure that your motherboard bios is the very latest

I will try manually tweaking a few settings after my next set of testing... But they should match. I bought 2 of the same 2x16 pack kits (to get all 4 slots populated). Both the same make, model, and specs. They didn't have them in 4 packs, not when I bought them at least.

 

[geofelt]

The same part number can be made up of different/non matching components with different characteristics.
Matching is done in the factory and is valid only for the single kit tested.
That costs more, that is why a matched 4 stick kit costs more that two dual stick kits.
YOU must now try to get them to work.

 

[Shortmoon]

The same part number can be made up of different/non matching components with different characteristics.
Matching is done in the factory and is valid only for the single kit tested.
That costs more, that is why a matched 4 stick kit costs more that two dual stick kits.
YOU must now try to get them to work.

Well, I contacted Gskill to get their opinion on the issue, and mostly to ask why the DONT sell this model in a set of 4... And yes, turns out I do have to try and make them work together on my own.

That being said, I ran a test under "optimized defaults" and came back as a pass! I then tried a new test with my overclock on, and XMP back on with my voltage setting above 1.4v. It flagged errors right away. infact, it seemed to like LOWER voltages, with each incremental increase causing more errors till I set it back to auto.

I had seen another post on Reddit where someone mentioned their voltage would sometimes drop suddenly, causing issues. Could it me the RAM is accurate, but my voltage is unstable at higher setting?

I know this is a lot, but I've never tweaked memory manually before, so your help has already been huge!

 

[SkyNetRising]

I then tried a new test with my overclock on, and XMP back on with my voltage setting above 1.4v.

It is not recommended to run DDR5 at voltages higher than 1.35V.
Lower DRAM frequency to improve stability instead.

 

[geofelt]

While some DDR5 ram is specced to operate at 1.45 or even 1.5v,
I agree with SkyNetRising above.
Better to reduce the speed first.
Most of the time, lower speed will make little difference except for benchmarks or integrated graphics.

And...
Do you really need more than 32gb in the first place ??
Perhaps running 2 x 16gb lets you sell of the extra ram.