Best case airflow for EVGA GeForce RTX 3090 24GB FTW3 ULTRA GAMING

[element059]

Hi guys,

I've just got the EVGA 3090 and it's producing a ton of heat compared to my 1080ti. This was to be expected but I wanted to check that I have my case airflow correctly setup. My previous 1080ti was a founders edition with a fan blower design so my case setup did fine, but with this 3090 my case has been turned into a radiator.

The card is idling around 58 - 60c and +80c at load.

My setup
EVGA GeForce RTX 3090 24GB FTW3 ULTRA GAMING
Intel Core I7-7700K 4.20 GHz Socket 1151 8MB (overclocked to 4.6ghz)
Asus rog maximus ix code lga 1151 atx intel motherboard
Corsair Dominator Platinum Series 32GB (2 x 16GB) DDR4 DRAM 3000MHz C15
Corsair Hydro Series H100i v2 Extreme Performance Liquid CPU Cooler
Corsair AXi 860W Fully Modular 80+ Platinum Power Supply
3x Corsair Sp120 Rgb Fan - With Controller
Jonsbo RM4 Zone Window ATX Aluminium Case
https://www.quietpc.com/jonsbo-rm4

I'm aware my current setup is old and not suited for the 3090 but ill soon be upgrading to a 5950. However, in 4k gaming the 3090 has performed well, with the exception of FS2020!

Thanks in advance!

 

[element059]

Thanks guys. I guess when I upgrade the motherboard and CPU I'll just upgrade my case.

 

[element059]

As a temporary measure I've just taken the side panel off the case lol

 

[element059]

Make the rear fan an intake and turn the rad fans into outtake fans
You are currently blasting hot air from the rad over your GPU and cooking everything inside your case

Thanks I'll give that a go. I'm assuming I need to move the fans to the front of the rad, rather than flip them around?

 

[element059]

Are the GPU fans stopped when the card is idle ?

Yes they stop in idle.

 

[element059]

Thanks all for your help. It looks like I'm going to need a complete system rebuild to do this properly. I think I'll return the 3090 and buy a complete new system from OC.

 

[element059]

For example, I've done this test on my own case, which is a Fractal Meshify S2 and the temps are similiar, with all the panels off the GPU only runs 1 to 2c cooler than with all the panels on

With a mesh case don't you compromise on noise levels? Part of the reason why I went with this case is it had good sound insulation. Worked fine for my 1080ti and bad for the 3090 that doesn't have a blower design.

 

[element059]

Just flip them around. Won't take more than 5 mins. See how it is after that



Hot air rises when there is no airflow. If there is airflow the hot air will 'go with the flow' so to speak, so having the top as an exhaust is not always the best solution. My top fans for example are intake fans because it makes sense to keep the air flowing

Hey, I tried that but the hot air is now blowing against the radiator, increasing my CPU temps. Albeit marginal.

Merry Christmas by the way

 

[element059]

I ended up reverting to my old fan config and just fine tuning my fan settings to make them more aggressive. I've also set the EVGA fans to spin up at 40 degrees. I'm now getting 32 degrees in idle on the GPU and 35 on the CPU.

It's weird how EVGA set the fans on the 3090 to only spin up at 50 degrees. That seems pretty hot to me.

 

[element059]

I'm really not a fan of mesh cases. I just don't think they looks very nice. As this is going in my living room I want a case that looks good but performs well.

From Gamers Nexus I see the NZXT H710 performs well, despite the solid panels.