Thanks for posting that. Was it easy to mount and how did you hook up the new fan? Does it seem to cool better?

Hi Kras - it was challenging given the limited space, but since I already tried doing a pull instead of a push I was familiar with the steps - It would be good to have someone hold it for you while you screw it in.  You'll need 4 more radiator mounting screws to do it.  I used the same fan header for a total of 1.5A.  It's definitely not worse that just the pull, but I'm waiting for another cool day to do stress testing to match when I did the previous test - I'll do that in the next few days.

If you're wary of disassembling it I've also tried mounting it outside for a ghetto look while I was planning the proper install:

I was saddened by the GN R13 review but I'm glad I got the better priced version without the plastic panels.  Now I only want another exhaust fan to balance out the airflow.

That is great work. I am not afraid of getting into it, in fact I already installed a Corsair H80. I was mainly asking because these threads pop up in Google searches and it's great info for others. I think it's awesome that you were able to get more cooling capacity from the stock AIO without a ton of modifications. I think there will be others that will be using your idea.

I did my usual TimeSpy and CineBench tests - the Push Pull configuration reduced peak CPU temp by 5 degrees, but the best performance was with the pull fan outside (1 deg cooler).  Maybe having the fan pulling air thru the VRM (in stock placement) helped there.

Updated pic with Noctua SAVG1 gasket/shroud - now it's cooler and quieter because of less leakage - and all black.  Bonus pic for the side Arctic F9 fan: