Hello I have a kit of Corsair Vengeance LPX 2x8gb CMK8GX4M1A2400C16R memory ver 8.30 Nanya A die RAM. When I overclock this RAM to different frquencies like common ones- 2933MHz, 3000MHz, 3200MHz, I notice that at a specific frequency i.e 3000MHz ONLY , my motherboard sets up different values of the timing tPHYRDL for each stick. You can notice this in the Zentimings screenshots that i took.
This is Ryzen 5000 and i noticed same behaviour on my 3300X.
If you have a 3000MHz XMP kit which i find is pretty rare, can you check if your BIOS does similar behaviour at this frequency or is it the case with my sticks of memory and board only. Remember the motherboard may set up different values of tPHYRDL after you shutdown your computer and turn on the next time the PC boots and train the memory. If your BIOS is messed up try load optimized defaults then turning on your 3000MHz XMP and notice the tPHYRDL timing.
I was just curious how different brands of ICs behave at this frequency. Feel free to post your zentimings screenshot.