We obtain the PTT, TDC, and EDC values for PBO through standard testing procedures.
We obtain the PTT, TDC, and EDC values for PBO through standard testing procedures.
The post suggests disabling x.m.p/d.o.c.p before running cinebench, but this only reduces CPU power usage. After adjusting BIOS settings to match motherboard limits and seeing EDC consistently at its maximum in hwinfo, you may need to tweak other parameters manually or consult advanced BIOS menus for fine-tuning.
Setting power limits to MMO settings indicates it controls CPU voltage and power delivery. It also affects the MMO and cooling system. Enabling XMP or EXPO shouldn't change these limits; disable it for stable performance. Ryzen Master will show the limits you configure.
Used 5900x on an Asus ROG Crosshair VIII Hero X570 paired with an Arctic Freezer III 360. Verified pbo2 tuner settings; motherboard limits are PTT - 395, TDC - 255, EDC - 200.
PPTs over 200W don’t significantly boost performance, though they function. Adequate cooling is key—EDP/TDP around 150 usually suffices, but verify their workload in Cinebench. Did you lower the voltage on the chip with CO? The 5900X generally accepts -15 across all cores, and up to -30 on the slower CCD1 (second CCD) cores.
Your chip may not be working properly; it fails at -15 across all cores during idle tests. When D.O.C.P is turned on, it draws 200W, but drops to 187W when the feature is off—this seems unusual based on system behavior.
Verify your top cores for CO and assign them -10. PPT rises with XMP/DOCP because RAM receives a boosted voltage (around 1.2V to 1.45V), which slightly increases power consumption—about 13W is negligible.
The OCCT stability test covering one hour and idle time during the night is likely sufficient, but you may want to extend it if needed.
Other benchmarks like Cinebench or Prime95 might give better results. The tools and games you use most matter most.