NegativeROG

You can just remove the fans in the front of the case and install the radiator there, which looks like it is basically your only option right now if you want to go water cooling. Doesn't look like it is going to be possible to fit the radiator in the top. You can use some of the fans from the front of the case in the top of the case if you want to keep using them.

At least it wasn't a Gigabyte PSU.

I've heard that if Microsoft OK's a workaround and allows Win11 to be installed on 7th Gen Intel, there will be a performance hit.  Do we have any idea how MUCH of a performance degradation?  So far, my expensive OC'd water-cooled i7-7700k is waiting for me to stick the TPM in the MOBO and download the update.  But I want to know what I'm losing, as opposed to waiting until 2025 and just building a new PC (the system I'm referring to is a spare, only used on occasion for 1080 gaming).  Am I gonna lose 1-2%?  I'll do it now.  Am I gonna lose 35% of my performance?  I'll wait until Win10 reaches EOL, and go with a Ryzen 9 8900x.  Thanks for any input.

Put fans on the top of the case where you WERE gonna put the radiator.  Your GPU is gonna run hotter, so keep an eye on that.  Get good fans for the roof, make sure your PSU isn't pulling hot air from the case, and take off the glass front panel if need be.  I have a case with 3 glass panels and 16 fans (2 in GPU, 1 in PSU).  The glass panels are safely stored in a cabinet, and all fans are turned to max revolutions.  Airflow, for me, is NOT a problem.  Just get as much air moving as possible, and you won't have major issues.

UPDATE 1/6/20:
 
I figured it out.  Problem solved.

The performance you are getting is REALLY terrible.  I get better than that with an RX 580.  Not trying to be insulting.  Get an x470 for $120, get an R5 2600 for $120, and 16 Gb of DDR4 for $75, or go newer and get an x570 and R5 3600.  You will never spend better money.  PERIOD.

I have a ROG Strix 2080 Super and even under load my fans don’t go over 50%. When I manually crank them to 100% they’re pretty loud, but at 50% they’re virtually silent. When my rig is at idle I’m more likely to hear my AIO pump than my gpu fans

When I spent a fortune building my gaming rig, I was going to go all TT.  Core P5, PSU, Riing Floe, etc.  I decided to go a different route, and I am happy, but the next rig I build will be all ThermalTake parts.

Stonowinnerz, there are upsides and downsides to both sides of this.  Getting the best peripherals (which I did) leads to having to use 4 different programs, 2 remotes, and my phone to change my system around.  Going with one "ecosystem" means not always getting the best parts.  It's a huge trade-off.  What I know is everyone loves ThermalTake parts, but hates their software (maybe this has changed).  I have to use Asus, Corsair, MSI, and PicTec software.  I got great cheap RGB fans, but they have a wireless remote.  Backlighting is another remote.  My RGB strip is controlled over WiFi.  I don't have a solid answer for you, as it is a conundrum.  You can either chose the best parts for you, and get prolly junk software, or use award-winning software that controls peripherals you aren't happy with.
 
An OVERALL recommendation would be to follow what Emanbird said, as they have a huge ecosystem, great parts, tons of control, complicated software, and are very expensive.

'Nuff said.  Thanks.  I appreciate the 30 second response, and from a mod, too!  Tell Linus we love him, and the mean tweets he read were funny, but from jealous losers.

Yep, because 2079 is just around the corner.