Question 7800x3d Temperature Spikes (Fan Curve Ideas)
Question 7800x3d Temperature Spikes (Fan Curve Ideas)
Hey everyone,
I recently moved from an Intel system and installed a new PC featuring a Ryzen 7 7800X3D. I’ve observed that this CPU can heat up rapidly—temperatures can rise from about 35°C to 60°C in just one second when performing simple tasks like downloading a ZIP file.
The fans tend to react quickly, sometimes increasing dramatically for a few seconds before slowing down again. This behavior is quite bothersome.
I’ve experimented with adjusting fan curves in the BIOS and added delay settings before the curve activates, but results haven’t been consistent.
Do any of you have similar experiences with this CPU? Are there specific fan curve settings or tips that helped you achieve a more stable cooling response?
According to what I’ve learned, these rapid temperature shifts are typical for the 7800X3D, but I’m looking for ways to make the fan behavior less intense.
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
Include the age of the PSU along with its make and model. BIOS version for your motherboard at this time.
For Windows users, check if the power plan is set to power saver. If you're on balanced, verify if it reduces spikes.
If you moved from a previous build, let me know. You can customize fan curves in BIOS for your fans.
WinZip, WinRAR, 7-Zip often utilize all CPU cores fully and can increase CPU usage to about 90%. These programs are highly processor demanding and tend to generate significant heat. I operate my case fans at maximum speed even at the base setting (50%), but they remain quiet thanks to the chassis design. When they become louder, it doesn’t bother me much. Be aware, I’ve worked in large server rooms where ear protection is necessary.
Keep trying different fan curves, refer to some tutorials, or use headphones. If your setup has more than six fans (excluding CPU cooler and GPU), consider removing a few. They’re likely unnecessary.
For my 9800x3d i maintain a constant 50% fan speed no matter the load. This approach ensures consistent cooling even during high demand. I usually do this because the variations are bothersome.
I'm currently using a 360mm push-pull Corsair Titan Link cooler that draws cold air from outside the chassis (O11D Evo). I initially installed it top-mounted, but temperatures could rise by up to 10°, so I relocated it.
What cooler are you considering?
Sudden increases in CPU usage and heat are typical for this chipset. After buying the 7800x3D and an AM5 motherboard, I also noticed large fan variations using the default BIOS settings. I customized the manual curve in BIOS so that at around 60°C, with 25% PWM, the fan runs steadily as a straight line. Above that temperature, the speed rises gradually—for example, to 40% PWM at 70°C and beyond. This setup helps keep fans quiet while maintaining good temperatures for my Fortis 5 single fan.