I have a loud fan in my SuperNOVA NEX750B that isn't loud enough to be defective, but certainly the loudest one in my case. I decided to order a Fractal Silent Series R2 120mm to replace it. I was also wondering if anyone here has undertaken the process of replacing an EVGA PSU fan and know anything about it. What kind of fan header is it? Does the plastic air director come off, or will I need to make one? Any suggestions/comments?

Inginator

I've looked into this, and have definitely heard about the caps, and know not to touch any more than you have to, but thanks for your response.
Will I have to cut the cord or modify the header to make it fit, or can I just tie the cord up and plug it in?
ABC or D? 

Inginator

I was just using my experience as an example. It could have any number of different connectors. And basically Should have said if it's C as shown in the pic then you can still use the 3 pin that's on the fan. But if its any other connector you'll be better off cutting the connector off of the old fan and putting it on your new fan. Just make sure that you get the polarity correct on the connector otherwise the fan won't work.

I flipped the switch onto Eco mode, then slapped a 140mm very quiet fan on top of the power supply to supply air into the PSU. The PSU fan will kick on if/when it needs to still, but I ensured airflow down into the PSU at all times by dint of putting an unused quiet case fan on top of it.
 
PS: I made sure that PSU fan rotation was such that it draws air into PSU from case and exhausts it out the back before I decided on fan direction for the 140 (air pushed downwards) I now have sitting on top of it. Result: I have my cake (warranty still valid, due to just using Eco mode switch, not opening up the PSU) and eat it too, (constant quiet airflow, not just relying on convection.)