OC to DDR4 Kingston Hyper Fury 2666 Mhz.  

You could run some memory tests like in Aida but I doubt it would be any better due to higher Cas latency. In any case different programs/games react differently to frequency and latency.

Enrique said:

Recently, I've realized an OC to the RAM above noted. The two dimms's working now at 2933 Mhz.

What do you mean you "realized an OC to the RAM"? Does that mean you realized you can enable XMP?

Enrique said:

Dear Sygnus, the XMP is disabled. That's what I mean.

Then if the board supports XMP and the RAM is XMP certified, then yes, do enable XMP or you're running your RAM below the specs you paid for.

HOWEVER:, If you're manually overclocking the RAM above the rated "XMP" specs, than enabling XMP will lower the speeds. With that what is the rated speed XMP of those modules???

You've not answered the question of what those modules are rated at?

But assuming those modules are rated at 2666MHz, and you're running them at 2933MHz, you were already running above the XMP specs so, yeah... XMP is NOT worth it. Especially if you're not having issues.

Not sure why you needed to post the question as the answer was obvious (assuming 2666)

Good luck.

Enrique said:

Anyway, Sygnus, I've enabled the Profile 1 (2666 MHz) and so I've return to my original set-up. The original question is solved: Is it worth it? Of course, not. The overall performance at 2933 MHz isn't noticeable, because the high latency. The fans go up in revolutions and the sound of the machine is a little more hard at 2933.
Thank you for your support, Sygnus.
HOWEVER:, If you're manually overclocking the RAM above the rated "XMP" specs, than enabling XMP will lower the speed. With that, what is the rate XMP of those modules???

[/QUOTE]
XMP is highest rated frequency for that RAM you have. Most DDR4 start at 2133MHz and if that RAM is rated at 2666MHz it's XMP is for 2666MHz. Only manual setting above 2666MHz would be considered overclocking it.
XMP is just a suggestion to BIOS to make settings for best frequency RAM is rated for. Mine for instance has 2 XMP profiles, one for 3000MHz and another one for 3600MHz from which I can choose from BIOS. My BIOS defaults it to 2400MHz but I was able to manually overclock it to 4000MHz although at very high Cl 28 which negated any performance gains.
Right now it's running at 3600 MHz but with XMP settings for 3000MHz (Cl16 and all other settings for XMP 300. That's thanks to BIOS that allows such settings.

Enrique said:

Dear Count:
I do not understand how works my MB (Gigabyte B450M-DS3H). I only works with her for a few days.
I'm only can -'til this moment- deactivate the Profile 1 (2666) and, by the multiplier, set up the number 29.3. So, it begins to work in 2933 MHz frequency, but the Cl are: 18 20 20 43 (the BIOS setup this numbers by himself). Do you consider that this Cl is too high in order to see a noticeable raise of the machine's performance?
The previous Cl are: 16 18 18 39.

Note: I'm only noted a little high of noise in flags (of the case -2-, not the fan of processor).

I would stick to 2666MHz because of Cl 16. Less chance of problem.
As for noisy case fans, there should be setting for speed curve in the BIOS to slow them down at lower temperatures.