I just found out NVMEs need cooling only on the controller as the memory likes to work rather warm. Some actually talk about degradation if you keep it too cool.
I've got an ICY BOX heatsink and I'm thinking about sinking only the controller and leave the rest without thermal pad.
My 1800x OC
Win10 Pro / PRIME X370 PRO / 1800x @ 4.05Ghz - BIOS 4012
TPUII / 40.5x / 1.425v Vcore / SOC 1v
CPU LLC3 and SOC LLC3 / CPU and SOC Phase control = Extreme / CPU Current Cap. 130% BIAS=CB11.5 (CB15 score 1780)