RE: Can we replace stock Dell case fans? XPS 8500
I replaced the 92mm case fan on my 8700 with a Noctua NF-B9 PWM fan ( search amazon) and it works fine, moves more air and doesn't cause any errors.
On another 8700 system I cut the front of the chassis and added a 120mm fan as an intake using a Y-splitter, also without any complaints from the BIOS. That fan was a cougar CFV12HP