Started up on a 3950x, fans kicked in unexpectedly causing some noise (no OC).
Started up on a 3950x, fans kicked in unexpectedly causing some noise (no OC).
I'm using a 3950x with some fan ramping up, but it's not as loud as expected. Even when it does increase speed, it remains very quiet. I'm not familiar with your BIOS, but I remember in my MSI setup I had to switch fans to PWM mode, which made them even quieter. They never reached a high volume, but they did follow up with the problem you're facing. Since I use case fans for my Noctua, that might explain why they stay so quiet. I'd follow Alyen's advice and raise the low end temperatures.
But I've tweaked a curve in UEFI that keeps at 50% unless it reaches 60°C, then it begins to increase. I set it at 80°C and now it feels fairly quiet, though not quite nighttime so sounds aren’t as noticeable. I’m planning to switch all fans to PWM mode as @madaaron recommended since they’re already auto. What temperature ranges do you typically use? Also, I recall someone created a custom power management profile that helped—anyone have any idea?
I've noticed these programs often don't function as expected (like not applying automatically at startup). Back then, fan speed to temperature graphs didn't exist, and the level system was quite simplistic—it kept fans running too hard. You can adjust the target temperature to influence when it starts, but that's about it. 1usmus's power plan?
I plan to keep UEFI as the main reference for fan curves. The "System Information Viewer" interface is appealing, but I want everything to work smoothly without conflicts. I’m trying to figure out the sensor positions—there’s one on the lower left labeled “System 1” and another on the lower right called “System 2.” Both appear to be the same spot (the red dot) and are near the front fans. Should I base my frontal fan settings there? Right now, CPU temperature is being used as a reference, which might cause spikes. The R6 fan hub connects to CPU_OPT, and this board lets you use other sensors besides just the CPU. In the CPU_OPT dropdown, you can select different sensors. Here are the sensor readings: I’m still confused about their exact locations. From the SIV software, the red dot seems to represent a single sensor, but it doesn’t show matching temperatures there. There’s no “System 4” listed. If you need to choose a reference for the front fans, should I pick the one near the three fans as shown in “System 4,” or stick with what’s visible? You mentioned you could move the fan hub out of CPU_OPT and use another sensor for System 2, but I’m not sure where those sensors are located.
The lower left area appears to reference various fan headers, not the sensor itself. These seem to be related to the sensors. The CPU likely indicates maximum core temperature or socket temperature. EC_Temp1 is a measurement from a probe you can connect to the board. The PCIe x16 port is for a sensor on the top PCIe slot, probably for an M.2 SSD. VRM MOS monitors the VRM temperature.