my DC fan is loud should i worry?

[dreamcast459]

so i recently dug out my dreamcast with the GDEMU and a laserbear 3d printed sd card mount. when i turn the console on the fan seems a bit loud not loud as in the bearing are failing just load i can tolerate the loudness was just curious if this was normal or if i should be worried i mean are all oem fans loud?

[PengoJetz]

Is there a lot of visible dust and dirt? Just disconnect, give it a good clean with a toothbrush and apply some waterproof gear grease to the bearing should make it a bit quieter.