10900x | Rampage VI Extreme | 4000c17q-32gtrs

[pphx459]

Hi, recently swapped out my 7900x for a 10900x and I'm noticing write speeds are significantly reduced.
I'm using the same mobo, 3006 bios and identical settings but seeing a difference of almost up to 40gb/s write speeds between the 7900x and 10900x. The cache and uncore speeds on both were left to auto, why such a big difference?

[emissary42]

I am not familiar with the platform, but that looks suspicous. Check the timings for some that are mistrained, adjusting these should fully recover the performance.

Both ASRock Timing Configurator or MemTweakIt ( https://dlcdnets.asus.com/pub/ASUS/m...t_20170830.zip ) work well to figure those things out pretty quickly.