This software fails to activate my fans at 3950x resolution.
This software fails to activate my fans at 3950x resolution.
The fan profile remains unchanged until about 64°C, then it fully activates up to 80°C at full speed, reaching roughly 678% RPM. Temperatures never exceeded 63°C. The unit is a Noctua 15 Chromax Black, paired with Silent Wings 3 case fans. Performance is notable. I’ve earned 9300 points on an older graphics card. When I say "trigger fans," it means the fans become audible. The system runs very quietly—idle temps sit between 35–50°C during tasks like browsing. How can I run this test continuously? I need to keep pressing "Run."
I'm seeing 80°C at Noctua NH-U12A during R20 on a 3900X. I'm thinking about swapping it, but it's tricky with my current rig. My CCD0 works well, though CCD1 is really problematic—even a small -0.025V offset makes the CPU unstable.
It seems the variation isn't that significant. I only applied thermal paste in the middle and temperatures are normal. No changes to voltages were made. How about your setup and airflow? Still feels unusual. Are you testing just one condition and it reaches 80°C? I've heard 3950x offers better silicone than 3900x.
The 3950X definitely offers superior silicon quality. My 3900X was one of the initial models and had some problems, but I still believe lowering temperatures after remounting could help. The CCD2 is particularly problematic as discussed, which is the primary concern. My CCD0 can operate at up to 0.25V lower compared to CCD1 while maintaining the same clock speeds, so my CPU tends to overcompensate by using higher voltage by default.
Do you have visual aids? Observe how there was a brief high of 68°C during Tctl/Tdie, but it lasted only a moment—generally the fans stayed below baseline. Seems reasonable to me. Glad I didn’t choose an AIO setup; it doesn’t appear to be necessary for 3950x. The large heatsink from Noctua 15 should efficiently handle those short spikes.