80mm fan plugged into NB port

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

I have an MSI Neo-2 platinum with a P4 3ghz Prescott

It was built for me by a company and I have noticed that an 80mm sunon
intake fan is actually plugged into the NB port on the motherboard (this
board does not have its own NB fan)

There is also only a 300W PSU with 18A on +12V

Does it seem like a good idea to make this fan run directly off the PSU via
a molex-3pin fan adapter?

Also it has a Radeon 9550SE, would a normal 9550 (which I think has a fan)
draw much more power from the board?