Quote Originally Posted by Sam_oslo View Post
I won't trust this one for 24/7 use, either the stability (because you have only the tested GPU-RAM) or the reliability (because your are using VVT>1.35v). But yes when you get to high speeds (around 2000MHZ) then IMC plays much bigger role than it plays around 1700MZ. You need good CPU-batch to run Uncore >4200MHZ.

I know some sticks can run >1600MHZ, but most these who are reporting about problems in this treats are running those "god old first generation 1600MHZ RAM".
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Sorry what does mean your sentence "because you have only the tested GPU-RAM"? I have tested CPU and RAM not GPU and RAM (OCCT was CPU test with large data set for RAM, and prime was blend test for CPU and RAM).

The test demonstrates RAM could easily run at 2100 MHz with low vdimm voltage, obviously is not for 24/7 use because of high VTT voltage.

Then do you agree with the fact that the problem are not RAM but CPU uncore and IMC?
RAM are able to go over 2100 MHz easily and to be stable, the problem is CPU that are not able to manage so high RAM frequencies because of high uncore and Integrated Memory Controller (IMC) quality that need high VTT voltage to be stable.

The IMC always plays bigger role: there are CPU that are not stable (with prime, linx and similar application), with 3200 Mhz uncore and need a lot of VTT to be stable. Is not a RAM question. The same kit of RAM could be not stable with low VDIMM and low VTT with a CPU at 1600 Mhz and 3200 Mhz uncore, with another CPU the same kit is stable with same settings.