Question Ram Sticks keep going bad

[Protodrake]

I have built new PC a few months ago. Sadly there is a problem. Faulty memory as it turned out (running 2x 16GB 3600Mhz sticks on an AM4 Gen board with a Ryzen 5600). 1 stick died so I bought a new one to swap it out. Im here 1 month later and behold both memory sticks detect errors now when running MemTest86. I reseted the bios of the montherboard by removing the battery, checked for bent pins on the CPU but its all good. The PSU is garanteed to be good bcos its a completly new and a very high quality one. I stress tested both the CPU and the GPU many times but they work just fine. There are no visual problems with the motherboard when I inspect it but I dont have a heat camera or the skills to actually check for problems. Im suspecting something might be shorting the motherboard. I removed it from the case and reassembled everything but I still detect memory errors on various CPU cores when running MemTest86. Now my PC wont even boot with memory running on 3600Mhz as originally but only 3200Mhz. I also tested putting the RAM sticks in all 4 memory slots all over the place but no change.

What is to be done? Rly need some expert help here...

 

[rgd1101]

full system spec? include brand and model of the psu

 

[Protodrake]

-AMD Ryzen 5 5600 3.50GHz AM4
-Deepcool AG620
-ASROCK B550M Pro4
-KINGSTON FURY 32GB Renegade DDR4 3600MHz CL16 KIT KF436C16RB1K2/32
-Red Devil AMD Radeon™ RX 6900 XT 16GB GDDR6 - Radeon RX 6900 XT
-SAMSUNG 1TB 980 M.2 PCIe M.2 2280 MZ-V8V1T0BW
-ASUS ROG Strix 1000W 80+ Gold (ROG-STRIX-1000G)

Running the rig with 3 monitors: 1x AOC 31,5" 1440p and 2x Samsung 24" 1080p

Both the CPU and the GPU are undervolted and overclocked

 

[Protodrake]

Ive done some tests by moving around only 1 stick of memory in the motherboard.
1 slot posts with 3600Mhz, 1 with only 3200Mhz or lower, 1 only with 3000Mhz or lower. Didnt bother to check the 4th slot.
I assume this means a faulty motherboard that has been slowly killing my RAM sticks.
What do u think?

 

[boju]

Both the CPU and the GPU are undervolted and overclocked

What is it you're actually doing here? What settings are you changing for cpu?

Could be motherboard i guess but if this is common factor between different sets of ram maybe try something different and not overclock, especially if you try another set of ram.

 

[Protodrake]

I set the following in Bios for my PBO:

PBO: Advanced
PBO Limits: Motherboard
PBO Scalar: Auto
Curve Optimizer: Negative -30 All Cores
CPU Boost Clock Ovveride: +200Mhz
Thermal Throttle Limit: Auto

I am getting a stable 75C on my CPU during Cinebench 30 mins test and about 65C during a gaming session so I thought it was fine.