Understanding and using XMP

[BLOODCHILLER]

Hi all I have xmp enabled and I have run cpu - z seems my core speed in cpu section is going up and down 0799,2then 0800.2 then 4,700then 3900 ect ect is this normal ?

[jarza_]

Yeah thats is totally normal operation called Intel SpeedStep. It reduces cpu speed and voltages automatically to lower power consumption. https://www.intel.com/content/www/us...rocessors.html
https://en.wikipedia.org/wiki/SpeedStep

[FMobile]

Hey guys, just a quick one.. I haven't encountered that before.

I ve bought a set of 16x2 GB Corsair RGB memory CL15 3000mhz.
If i select an xmp profile on my z490 G gaming it sets out unusual values.
FSB is set to 102.5 ( which i can understand due to 3000mhz ram) but it also sets out cpu cache ratio to 43.

I do not want to run it on these settings. This causes extra heat and extra fan noise. SO what I did is a manually set it to 100 FSB, I set cpu cache to auto, keep the CL15 timings and voltage 1.35( up from 1.2) but run in in 2933mhz instead of 3000mhz.

DO you think I did the right thing?

[rstolpe1988]

Quastion; can XMP break the CPU? I don't think so after everything I have been reading but just wondering.