2666 CL15 vs 3000 CL16 for Ryzen 2600

[spamaps]

As in title, which one is better for Zen+? Both 2x4GB.
For example:
2666 - https://pcpartpicker.com/product/YzNypg/gskill-memory-f42666c15d8gvr
3000 - https://pcpartpicker.com/product/p4cMnQ/patriot-viper-4-8gb-2-x-4gb-ddr4-3000-memory-pv48g300c6k

MOBO - ASRock AB350 PRO4

 

[RememberThe5th]

Since its amd 3000MHz is best option and If you can get it with 100$ its best value.

 

[PuperHacker]

A formula for calculating RAM speed is by dividing RAM speed by CAS latency. In your case, it is:
3000:16=187.5 and
2666:15=177.73
Exhaustively, the patriot RAM will have better performance.
Note that Ryzen can benefit from extra RAM speed.