TL;DR
If you need more than 32GB of RAM and don't want to mess with memory overclocking, this kit is great. You should go for a regular Hynix A-die kit if you want to overclock unless you have a 2-DIMM, high quality motherboard.
Full version:
This is the easiest 6400MT/s to run on for a Zen 4 CPU - I could pass all stability tests with just VSOC == 1.2V with all EXPO settings except tREFI == 65535.
However, unless you have a 2-DIMM 8- or 10-layer motherboard (X670E Crosshairs Gene, etc), it's going to be slower than a regular Hynix 6000 CL30 A-die kit at UCLK:MCLK 1:1 mode. I managed to get 6400 CL30 stable with comparable performance to 6000 CL28, but it's at the cost of high VSOC and slower throughput (at 6000 you just push FCLK to the maximum stable frequency; at 6400, 2133 is the fastest being 1/3 the transfer rate of 6400).
This kit is faster at 8000MT/s in 1:2 mode than an A die kit at 6000/6200MT/s, but if you have a 4-DIMM motherboard, 95% chance it won't be stable at all.
