Originally Posted by Martin778
Originally Posted by Dibiase
I'm running the the coolermaster ML360R cooler with my 3900x and my cpu temp don't go above 50C full load.
That's absolute bull, 3900X idles betweeen 45-55*C already. 3900X and ML360R run around 72-75*C in Cinebench and up to 90 in Aida64 w. FPU.
The cooler for 3900X barely even matters because the CPU is cooking from inside out due to it's 7nm nature and since AMD had to beat Intel with whatever they could, they strained that CPU to oblivion, that was the only way for them to get those short 4.4-4.6GHz bursts, otherwise the best efficiency of Zen2 lays around 4.0GHz.
Anyone saying a 8-core Zen2 running under 60-65*C is either telling fairytales or doesn't know how to stress test a CPU properly....or both.
While you may be right about the 3900x and its temps as I don't own one and cannot comment on that cpu but the 3700x stays right at or below 60c for me during 120w sustained loads and what you are saying about the cpus having short 4.4-4.6 ghz boosts is down to the boosting algorithm just not being able to overclock to their full potential. I can configure my 3700x to boost 4.4ghz all core with 4.5ghz+ on multiple cores. The boosting algorithm isnt fully to blame though, its also partly the power settings within Windows being garbage at default. On balanced with the same cpu it wont even boost to 4.3ghz and High Performance isn't much better but when I manually configure the core parking, load sensitivities, etc within the Windows power profiles then it will boost to their advertised speed or within 25mhz. These options are hidden by Windows, well bc its Microsoft .
There are a couple dozen options relevant to boost behavior and how fast the cpu reacts to loads and how much of a load is needed for these reactions among others so thats an avenue to look down.
As far as configuring within the bios on my C7H undervolting slightly using a -.04375v offset and running at 102.2mhz bclk I can manipulate the boost into the 4.4ghz all core with 4.5ghz multicore boost I spoke of earlier. VCore ends up being around 1.35v during all core loads with temps hitting right around 60-63c (29-32c delta) with my H115i Pro with Noctua NF-A14 in Push/Pull and I always use LM as a thermal interface on the IHS which dramatically helps in thermal transfer on my end.
As far as running small FFTs in OCCT or Prime95 it may increase another 10c but IIRC The Stilt wasnt very adamant on using the default small FFTs preset for stressing Ryzen 2nd Gen but id have to dig through the Strictly Matisse thread to quote exactly what was said and Im not in a position to do that at the moment.
Another thing, when discussing temps instead of using someones max temp, the above ambient delta would be more relevant as someone with 40c ambient will surely have a much higher max temp than someone running at 22c ambient.
Once I am off work and home later I will do some stress testing and double check my results and post something with monitoring screens attached.
Another note -1.8v PLL and 1.05 SB tend to be high on my motherboard and lowering them to the correct values lowers temps several degrees as well as configuring SoC and VDDG correctly but SoC and VDDG arent really a big difference and can affect performance and memory stability if not tested properly.