AIO Pump Loud After DC Mode | Generated by AI
Sorry about that. Let me answer in English.
Why it’s still loud after switching AIO_PUMP to DC Mode
Switching to DC mode only changes the control method, not the speed curve. The motherboard still applies a variable voltage based on the CPU temperature curve. DC mode just means voltage-based control instead of PWM signal — the curve is still active.
The fix: flatten the fan curve
Enter BIOS → Hardware Monitor / Fan Settings → find AIO_PUMP:
Option A (recommended): Switch back to PWM, then set curve to 100% flat
| Temperature | 30°C | 40°C | 60°C | 70°C | 80°C |
|---|---|---|---|---|---|
| Speed | 100% | 100% | 100% | 100% | 100% |
This keeps the pump at full constant speed regardless of CPU temp. Water flow is steady, no temperature oscillation.
Option B: Keep DC mode, but flatten the curve the same way — all points at 100%.
But the real noise might be the radiator fans
You mentioned you moved fans around. Where are the radiator fan cables plugged in now?
- If they’re plugged into a SYS_FAN header or are running at uncontrolled full speed, that’s likely your noise source.
- If you didn’t reconnect them properly, they might be running at 100% all the time.
What to check
| Header | Cable | Mode | Curve |
|---|---|---|---|
| AIO_PUMP | Pump cable (from pump block) | PWM | 100% all points (constant speed) |
| CPU_FAN | Radiator fans (via splitter) | PWM | Default or adjusted to your liking |
The radiator fans should go to CPU_FAN — that way they respond to CPU temp and slow down when idle. If they’re on SYS_FAN with a different curve, they might be running faster than needed.
Can you tell me which physical headers your two cables (pump vs fans) are plugged into right now?
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