CAS 15 good??

Solution
It's perfectly fine.

A CAS of 15 is by far and away the most common latency for DDR4 2133 modules. There are a few CAS 13 and 14 models available at that speed, but honestly you would be hard pressed to see any significant difference in everyday performance between them and the CAS 15 models.

Luminary

Admirable
It's perfectly fine.

A CAS of 15 is by far and away the most common latency for DDR4 2133 modules. There are a few CAS 13 and 14 models available at that speed, but honestly you would be hard pressed to see any significant difference in everyday performance between them and the CAS 15 models.
 
Solution