No word about thermal sensors? It's one of the key features of this memory.
AIDA64 shows really low write bandwidth. It suggests that something is wrong with the test platform (BIOS, mobo, settings, ...). I had to RMA one CPU because of that. It couldn't pass ~50GB/s while all others were reaching ~100GB/s on the same settings.
These sticks should be top bin Micron rev E. Should try them on looser timings like 19-23-23-40. My 3000 CL15 sticks does 4400 on those timings.
Actually, it depends on luck. These modules are really random. All my sticks run between 4100 and 4600+ ... and I mean regardless of settings, some of my sticks hit a wall at ~4100, some can boot at 4600+ (on Z390).
At 4000 I had more luck with the same IC but dual rank. On X299, 4x8GB kit could make 4000 19-21-21 stable / 4000 19-19-19 for benching while 4x16GB kit could make 4000 19-19-19 stable / 4000 17-17-17 for benching.
I can't find screenshots from 4x8GB so here is 2x8GB ( 2 better sticks from the reviewed kit, can see PN in CPU-Z window):