On the msi z370 pro carbon 8700k board, two sets work fine, 4 memory sticks at a frequency of 4133 MHz with 19-19-19-39 voltage 1.45. Which is not bad for 4 bars, and 4 is known to run worse than 2. Xmp at 4000 MHz worked great. I tried 4400 MHz, but in the tests there are errors, you have to conjure with timings. In general, an excellent memory for those who like to scratch the computer, and for those who do not like, you can also turn on the xmp profile. On two bars, I think both profiles will work, and not just at 4000 MHz. Stopped 4000 MHz at 17-17-17-37 trfc 500. Stable, latency 41.3 excellent write and read speed.
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