First of all, sorry about my english, i will try to explain as best i can.
Recently i change my eight years old build for a Ryzen new one.
This is my new build:
Gigabyte x570 Aorus Master
Corsair Vengeance LPX DDR4 3200 32GB 2x16GB CL16
Thermaltake Floe Riing RGB 360 TT Premium Edition
Samsung 970 Evo NVME 1 TB
Thermaltake P3 Snow Edition
One friend and my update us hardware at same time with a very similar build, same processor and Gigabyte X570 Aorus Pro instead Aorus Master , Deepcool 240 mm AIO instead Thermaltake, and Coolermaster H500 instead Thermaltake P3. My friend is using an standard thermal grease and im using conductonaut.
First thing i see strange is that with same PBO configuration ( Autooverclocking + 200 Mhz + Motherboard limits ) is that Prime95 Small FFTs L1/L2/L3 max temps of my friend are about 72º and me around 90º, and, my friend have 4150 Mhz all cores and me about 4020 Mhz all cores.
Investigating i see that PPT, TDC and EDC of my friend and mine are not equal. This is calculating the percentages of Ryzen Master at full with Prime95:
PPT - 108W
TDC - 61A
EDC - 105A
PPT - 132W
TDC - 91A
EDC - 108A
Around 30W and 30A more me than my friend, but same CPU voltage.
If i configure bios with default settings ( without PBO ) i have around 60º at full Prime95 but 3,7 Ghz. My friend have same temp but around 4 Ghz, the difference is my motherboard sets my CPU with 1,14 Vcore and his motherboard sets his processor with 1,23 Vcore.
I try to configure PBO limits with my friend´s data Prime95 full max PPT,TDC and EDC, and the result is i have 3,8 Ghz with 1,16 Vcore ( my friend 1,37V and 4,15 Ghz ).
As well i try to force my motherboard withs my friend limits and my friend vcore, but my motherboard ignore my vcore.
- Me with default PPT/TDC and EDC limits
- My friend with default PPT/TDC and EDC limits
- Me with my friends limits
- My friend without limits
- Me without limits
Anyone knows thats the problem?
I need to say i try two differents 3700x with SAME result.
Im thinking about airflow problem or AIO problem, but i thinks its OK. Room temp are very similar. I try to put a fan over CPU waterblock but i get same temps. As well i try to simulate airflow with a big room fan put in front my pc and temps and behavior are equal.
AIO has been dismounted, checked and mount again and its ok.
Both motherbards have last BIOS update and chipset drivers.
Thanks for any idea and, please, if you dont understand something, ask me.