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4x16gb causing bsod

I've recently bought a second kit of 2x16gb ram sticks and it is causing the system to bsod after a short amount of time.

 

System specs:

* mb: asus prime z790-p wifi

* cpu: intel i9 13900K

* original ram kit: corsair ddr5 2x16gb 5600mt/s 36-36-36-76 ver 4.43.02 CMK32GX5M2B5600c36

* second ram kit: corsair ddr5 2x16gb 5600mt/s 36-36-36-76 ver 5.33.01 CMK32GX5M2B5600C36

 

Things I've tried/seen:

* bios shows all 4 sticks. None are disabled.

* bios shows different tRFC1, tRFC2, tRFCSB values for each pair of sticks

* bios AI overclock tuner uses XMP 1

* bios has DRAM Frequency set to DDR5-5600MHz

* bios has DRAM VVD and VVDQ voltages set to 1.25000 (all others set to auto)

* all 4 sticks memory test (original sticks seated in a2 and b2, new sticks in a1 and b1): test won't finish and bsod. On retry it freezes the PC when it's restarting to launch the test

* original sticks memory test in a2 and b2 slots: no errors

* new sticks memory test in a2 and b2 slots: no errors

* when booted into windows, all 64gb show up, but once i start using the machine (load stuff into memory) it bsod

* When swapping the pair of sticks so the originals sit in a1 and b1, with the new kit in a2 and b2, the POST screen tells me it posted in safe mode with it saying it has a total memroy of 65536mb (ddr5-3600): this 3600 value seems strange

 

Is there anything I'm missing or doing wrong to get the full 64gb to work?

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4 dimms has always been harder on the IMC (Memory Controller) than 2 dimms.

You may have to use a slower speed bin. eG 5400/5200/5000 as a TEST scenario to see if it is stable there.

That's what I would tell you after all those other steps.

XMP but then select a lower speed.

Or Non-XMP at a LOW LOW speed (just a test) and see if it still BSOD in a instant/short time.

 

Lower speed bins you didn't mention, I'd try a lower speed bin and do the various memtests again.

Maximums - Asus Z97-K /w i5 4690 Bclk @106.9Mhz * x39 = 4.17Ghz, 8GB of 2600Mhz DDR3,.. Gigabyte GTX970 G1-Gaming @ 1550Mhz

 

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4 dimms and mixing RAM in several ways. Different kits with different MIC. 3.xx is Micron, 4.xx is Samsung. These are never gonna work together properly. Better get a 2x32GB kit if you want 64GB.

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