RAM dying, why?

[GoogalyMoogaly]

So I've just had to RMA some RAM and I don't think it was the first time.
Are there any common reason for a stick of RAM dying?

The Motherboard is Fatal1ty AB350 Gaming-ITX/ac and the RAM is Team Group Dark T-Force 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz.
It always seems to be the RAM stick nearest the CPU socket (from memory, pun sort of intended).
It's not overclocked, it's just using the XMP profile.

Could it be a fault RAM slot on the motherboard? Could the CPU cooler be blowing warm air onto the RAM stick and causing it to overheat (seems unlikely)?

Overclockers have been really good, but I'd rather it not keep happening.

Getting a new mITX motherboard would require a new CPU too, which is getting quite expensive for what I use the PC for so I'm hoping there's something I can do.

Any ideas?

 

[GoogalyMoogaly]

How often has it happened?

This is either the 2nd or the 3rd time.

I mean it's first gen Ryzen so it is quite old, but also spent periods not being used much.

Still, 2 or 3 times is either a lot or I've been very lucky with my other setups.

 

[GoogalyMoogaly]

It is in a SFF case (Silverstone ML08), so airflow isn't great. I suspect it is getting some air from the CPU cooler. Not sure if this is good (as it's airflow) or bad (because it's warm).
What gets me is that it's only 1 stick. If it was voltage I'd have thought it'd affect both.
One small thing, the motherboard (or CPU) won't run the RAM above 3000MHz, so I'm wondering if the voltage is too high for the speed?