PCIe GPU fan question

[NadeMagnet69]

Would running something like this https://www.amazon.com/GDSTIME-Graphic-Card-Graphics-Cooler/dp/B07H5KPY8P/ref=sr_1_3?dchild=1&keywords=pcie+fans&qid=1598979192&sr=8-3
under and blowing into the intakes of a 2080 super founders edition type open air GPU help lower its temps?

[Jurrunio]

In a well ventilated case, no because the bottleneck for temperature isn't the fans but the heatsink size (if not thermal paste as well).

[MrJrCookie]

I just want to back up what Jurrunio said, if you could post a lonk to your case that would be helpfull. And how many case fans do you have?

[NadeMagnet69]

4 hours ago, MrJrCookie said:

I just want to back up what Jurrunio said, if you could post a lonk to your case that would be helpfull. And how many case fans do you have?

I have plenty of airflow and fans in my case, or at least I did have plenty of airflow. I have the full tower Corsair 750D airflow edition case.  For cooling I have a 240 arctic liquid freezer II set in push/pull, paired with 2 Noctua redux 1700. Set as an intake in the front. 2 more Noctua 1700 in the bottom as intakes. 4 140 Noctua as exhaust, 1 rear 3 top. lol And I even cut a hole in the acrylic side and added another Noctua 140 blowing as an intake for the GPU. It was all good. But since I just got the giant Acer 43 CG7, I had to drop my PC from the desk surface to a lower shelf and take the desk drawer out. So the entire case itself is now getting a lot less airflow and is recycling some or a lot of the hot exhaust air. When it was on the desk surface even at max stable OC of 110 for the 2080, it wasn't going hotter than 75C. Now that it's below, my 2080 is creeping right to the point where it's starting to slightly downgrade my OC results. So I'm just looking to shave off a few C and was hoping a PCIe fan could help.

lol I just ordered this this morning. https://www.amazon.com/gp/product/B00G5KOPHS/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

and I'm going to cut a big hole in the desk's top to mount it. That definitely should take care of venting the top exhaust at least and keep me from feeling the hot air all the way to my chair like it is now after gaming for a bit. I might also flip the modded side fan and set it to exhaust and see if that helps. Really trying not to though. Sigh... It took me almost an hour just to mount these POS without them slipping off. https://www.amazon.com/gp/product/B0725KMTY8/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

I did NOT get exactly what was advertised. Mine has a little lip that's suppose to fit around the fan. lol I'd get 3 sides just for the 4th to slip off. Fixed it and another side would slip. Was very frustrating but I finally got it and really don't want to touch it again. Oh well, first world problems.

6 hours ago, Jurrunio said:

In a well ventilated case, no because the bottleneck for temperature isn't the fans but the heatsink size (if not thermal paste as well).

That's kinda what I figured. I guess they're mostly just for RGB looks if one gets that kind. But I wanted to hear from some other people about them.

Thanks guys.