MrEWhite
So, I got my RTX 3090 FTW3 Ultra today and it looks fantastic in my case (H500M), but I noticed that the temperatures were pretty darn high! With +90 core, and +250 memory OC in place with a 107% power limit, I saw the temps getting up to 78c with the OC bios' fan curve! Does anyone know how to improve these temps? Maybe getting a good vertical GPU mount so the air isn't being exhausted against the glass? I'm pretty sure I have good airflow, as I have a push pull config for my 360mm CPU AIO on top, a 140mm exhaust fan, and 2 200mm intake fans. 

arestavo
As said time and again on these forums, take the side of your case off and test.
 
If temperatures improve, you case needs better airflow. Be it more fans or a different intake/exhaust setup (or a different case, preferably one with side panel fans that are no longer in vogue).
 
These cards don't exhaust heat out of the case like blower style cards, so all that extra heat that these 450W cards put out needs to be moved out - or it builds up inside the case and only raises the GPU temperature.

glocked89
That is a good air flow case! 450 watts is alot to cool on air though. Set your own fan curve for the gpu in px1 or AB and keep adjusting until you get the temps you like.

Speed up your case fans too if you have them spinning at low pwm

Saltgrass
I have the RGB bar set to show temps and I am currently a little concerned.  I was playing a new game for me, Half-Life ALYX VR on easy mode and the card was showing a dark red indication.  The temp is set to go red at 83° C so I would guess it is going quite a bit over that temp.. 
 
I did try the side being off the case and I will try to turn one fan in back so it blows in and not out.  
 
I do feel running the Precision X1 will raise the temp on the card by 10-12° C just because of my observations.  Since the RGB temp indication does not appear to work unless the PX1 is running, there is no other way for me to check the cards temp during game play if I shut down that utility..

nirvashone
You guys talking that 78c is normal seem a little crazy. I have a fractal meshify S2 case with two noctua a14 ippc fans on the front, a 360mil rad on the top with a single 140 mil fan on the rear. +150vcore/+650vram I see temps at 60-65c. Only time I see 70 plus is when I have it vertically mounted and that's because the fans are too close to the glass. But I've never seen it reach 78 c.

Saltgrass
I finally got my card holding normal temps.  Even though someone had stated the card blew hot air back into the case, I did not think that was correct.  But once I realized it was correct and actually blowing the hot air back near the cooling fans, I reconfigured the air flow to keep cool air near the fans.  The card is staying in normal ranges now during game play..