Originally Posted by PapaSmurf;12472017
Depending on how you have your psu oriented, it will more than likely have either limited affect on the total airflow or none at all (if it's positioned so it draws in outside air).
The HAF X has a bottom mounted PSU. The Corsair HX1000 PSU, after installing, normally sucks cool air from the bottom case grill, into the PSU and then out the back of the case. That PSU fan will have NO EFFECT whatsoever.
If you installed the PSU upside down, then you would have the exhaust-fan effect but then you would be drawing in warmer air (case air) into the PSU which is counter productive.