Issue with laptop fan spinning at a slower speed than maximum RPM

F5F Stay Refreshed Hardware Notebooks Issue with laptop fan spinning at a slower speed than maximum RPM

170

08-06-2025, 01:22 AM

I just swapped out my left laptop fan because it began making grinding sounds, and I'm using LFC to manage the fans' speeds. On my original fans, they could spin up to 4400 rpm, but with the new ones it seems limited to 3700rpm. Is this a typical issue or are the fans operating at a different voltage?

andrewliu12

08-06-2025, 01:22 AM #1

thebjmax1
Senior Member

395

08-07-2025, 06:58 AM

voltage remains identical, cannot vary, fan motor differs
is it sufficient for cooling?

thebjmax1

08-07-2025, 06:58 AM #2

voltage remains identical, cannot vary, fan motor differs
is it sufficient for cooling?

hyperdrive57
Member

08-07-2025, 03:52 PM

It's actually quite fine, though it seems odd how the replacement fan limited the RPM. I'd rather have my fans running at full capacity for the best airflow, even if it means tolerating the noise.

hyperdrive57

08-07-2025, 03:52 PM #3

It's actually quite fine, though it seems odd how the replacement fan limited the RPM. I'd rather have my fans running at full capacity for the best airflow, even if it means tolerating the noise.