Is there really a noticeable difference between RAM with Cl 15/16?

Question

Iron

I have a question about the operating system.
Will there be any noticeable difference between 3000 15-15-15-35 and 3000 16-18-18-36, in tasks like "build the build / run the emulator / do it all together, given the 150 chrome tabs open on the side"?
I understand that in theory the ratio of "velocities" at the same frequencies looks like cas1 / cas2, and it seems to be about 6-7%, but what happens in reality? And an even more interesting question - and if I overclock the memory, what is the chance that the 6-7% advantage will continue? And if there is still a difference, then did someone consider what are the errors of the "speed" of memory in the tests and will the difference of 1-2% not be comparable with them?
The modules themselves are GSKILL TRIDENT Z F4-3000C16D-32GTZR and F4-3000C15D-32GTZ.
For a faster option, I'll have to pay an extra 30 bucks, and it's <crossed out> not pink<crossed out> without cute backlighting.
(Mother: Asus Prime-A z390, CPU - i5-9600k)

Answer 1

it makes no sense
only if the extra 30$

Answer 2

Even in a seemingly ideal situation, enabling the dual channel mode option, which should have doubled the speed (this actually virtually increases the memory data bus), increases the speed of archivers, for example, by only 10%, and in other situations, a few percent.
Timing changes are even more minor micromanipulations. Those. if you see a 6% increase in synthetic tests, then feel free to reduce it by 10 times in real applications.