how does the RAM work?

[imajerec]

so the 3200CL16 1.35V DDR4 RAM can be used on AM4 mobo's with xmp profile enabled to work at that frequency, but for an intel b460 motherboard they won't work that way as the mobo doesn't support RAM OC, and then an intel CPU let's say one that supports a maximum frequency of 2666mhz DDR4. so how would that work at default settings? i know it would work at 2666mhz but how would the CAS latency be selected? would the lowest CAS latency supported at 1.2v be selected ignoring the minimum potencial CAS latency at 1.35v?

 

is it then pointless to get a 3200CL16 kit for a i3/i5 in hope to get a lower latency than a stock 1.2V RAM at 2666CL15/16?

 

on my crucial ballistix kit the CAS latency displayed at 1.2V for 2666mhz is 19

but for the 3000mh is 15 at 1.35V

so i guess in an intel build it would work at 2666CL19?