Finally achieved rock-solid stability with a massive 192GB 4-DIMM setup on my 9950X3D. I know 4-DIMM on AM5 is usually a nightmare, but the latest AGESA 1.3.0.0 (BIOS 3513) changed the game.
RAM: BIWIN 192GB (4x48GB) DDR5-6000 CL28 kit
Passed 3 cycles of Memtest86+ (approx. 9 hours) with 0 errors.