“Mindfactory’s sales information in repeated articles over several years, and its Ryzen 7 5800X, 5600X, and 5900X RMA rates are 0.58 percent, 0.52 percent, and 0.33 percent, respectively.”
Based on some very rough estimates using mindfactory and amazon sales data, the 9800x3d is in line with or below 5000 series RMA rates.
If there was real cause for concern, the RMA rate should be much higher.
I too had a barely year old AMD CPU go pop in an ASRock motherboard about 15 years ago. Bought the same CPU again and stuck it in an ASUS board and it is still running today. I know they have a better reputation these days, but this is the kind of thing that just shouldn’t happen.
I got one of these Ryzen 7 5800X CPUs and I was running it against a much more updated Intel CPU on blender rendering using the Luxcore engine which simulates light rays. The gaming AMD CPU kicked the Intel Xeon gold 5218 to the curve. Usually the thing is just sitting idle, but when I need the power it delivers.