Well, we here are customers too, and Nvidia will be getting the middle finger off me until they stop selling direct to miner's, and or manipulating the market to suit they're agenda.
If I were Tsmc , after Nvidia blaming them for issues before running off to Samsung, then running straight back...
It's not common I agree but I think it is possible, and yeah it worked on a Intel not ever again on the AMD, very very odd, that was Corsair RGB pro memory not Lpx too.
It's also possible it's the board or CPU though, hopefully the OP fixes his issue and let's us know.
While I agree with your points and in general haven't seen it often I have had a memory go bad in a system due to SPD corruption that was followed by a bios hard lock of sorts that I could only clear via overnight CLR cmos with no cables, normal CMOS clrs on that board in that moment did...
Could also be worth the harshest of CMOS clears, all cables out of mobo, CLR pin fitted to CLR and power on , it won't happen but will drain it quicker then leave a few minutes before retesting, doing so has sometimes fixed non booters for me that I tried a normal CLR cmos on.
See the timeline was RTX proprietary came out, dx12 announced , games came out with no fallback support for non RTX hardware, then DX12 ultimate was released with DX12 raytracing API, then eventually Nvidia moved towards DX 12s implementation.
But you're pulling vulkan and similar out.
Parity...
Ok I'll leave you to it but just know, I have had three sets of ram do as your saying, the last two would still work in an Intel system but not This AMD one, I didn't try the first set.
So your if cos doesn't discount what I am saying.
On the third set I looked deeper into it via typhoon...
So this ram that works in your old rig did you just transfer it into the new system.
Or is it new ram bought for the new system?!.
I am trying to save you money time and effort not just being picky.
Well back when rapid packed math was introduced I couldn't believe they had not also incorporated this, you have a 64bit wavefront that can already do multiple math ops on one wave in one pass, so why not do quadratics like that, clearly patience was needed by me.