Does c14 - c16 matter on a i5-8600k

[move13.k9]

Does c14 c15 c16 matter on a i5-8600k gaming and streaming wise?

 

[vapour]

Nah, frequency is the dominant factor here. Diff among those: http://www.crucial.com/usa/en/memory-performance-speed-latency

 

[Zerk2012]

If all of those are the same speed then the C14 will be the fastest.
2400 C14 will be faster than 2400 C16.
The difference you see unless your running benchmarks or memory intensive work programs will be very little.
With that CPU you should be getting 3000mhz or 3200 mhz memory.