Thank you, that seems very close to optimal! A sight variance may exist due to motherboard and silicon lottery.jstanback wrote: ↑Fri Mar 20, 2020 7:17 pm For my Ryzen 3950x, in the BIOS I set Vcore=1.20 and Multiplier to 40 and don't enable PBO. This gives an all-core frequency of 4.0 Ghz and when running Wasp with 32 threads the total CPU package power is about 132 watts. With the Noctua UH-12S
air cooler the cpu temp stays under 70C. I really like the 3950x.
John
Procedure to achieve best all thread overclock in shortest amount of time.
STEP 1
Start with memory overclocking. My motherboards flash bios button does not work if the memory fails so do memory overclocking with an open case. I was able to overclock my memory from 3600 MHz to 3733 MHz and the infinity fabric from 1800 to 1867 with about an 800 kn/sec improvement.
After the memory overclock is finalized makesure you have AMD Ryzen Master downloaded.
STEP 2
Disable PBO and find the cpu vcore voltage that does not exceed 100% PPT, TDC and EDC. On my setup that was 1.1375V.
STEP 3
Then find the highest stable all core multiplier. On my setup it is 40.25.
STEP 4
IMO AMD uses a higher bin chiplet for the first n cores. Not sure if n is 4 or 8. Anyway, switch to assigning frequencies by 4 core groups. Assign 40.25 (in my case) to all 4 groups. Then you can try increasing the multiplier for the first group. Currently I'm testing 41.00 but I interrupted the test to make this post as it needs to test for several hours to be sure.