Question Lian Li Lancool 216 bottom intake and additional rear exhaust ?

[BunnyKraken]

Hi, building in a Lian Li Lancool 216 with a ryzen 5700x and RTX 3080. I will currently use the default front fans and rear exhaust, and two additional 140mm top fans.

I was just curious would it be a good idea to use a 140mm bottom intake undeneath the gpu (the second one is top of psu so no use cooling wise). Would it mess up the air flow with my current setup or gather more dust, since the bottom underneath it doesn't have any dustfilter, only dustfilter is underneath the psu in the case.

Secondly would a additional 120mm rear exhaust behind the GPU help at all, or would it again mess up the airflow (negative pressure) especially if I don't plan to add the bottom intake fan ? The additional rear exhaust fan mounts outside the case.

Lastly does it matter in any other way than fan size installation if I use the AIO or AIR motherboard standoffs. The AIO setup leaves more room at top and AIR more room at bottom. I asume I will maybe use the AIO mode just for easier installation for the CPU cables since there is never enough room for me to twist them.

Two pictures, one taken from reddit user with two bottom fans. Second is a sample image with the additional rear GPU exhaust fan.

Bottom Fans
Rear exhaust fan

 

[Lutfij]

I'd first look into building the system, check temps, then add fans and see if your temps improve.

If you didn't see, this video would be worth checking out:

View: https://www.youtube.com/watch?v=6_w0NbB84P0

 

[sonofjesse]

I really enjoy the Li Lian cases.

I have the lan mesh III. I have added all the fans I can fit (having the 3 fans blow into the GPU I think helps.

Current room temp is 73 F and my GPU is 88 degrees (non gaming, but doing stuff). Well the onboard AMD Radeon reads 102 F.

Good luck and enjoy your build!

 

[Karadjgne]

Use °C, not °F, as that just gets confusing. °C is essentially the industry standard measurement.

You'll have 2 temp readings, the gpu and Hotspot, expect the Hotspot temp to read from 10°C to 20°C higher than gpu. That's absolutely normal.

Op: There's no perfect layout for fans, only general ideas, as cases are different but so are fans. If you are running higher airflow fans with no restrictions, and getting a ton of cfm, then additional fans aren't going to do much. If you have cheapo miserable rgb fixed fans with really bad airflow, then additional fans will guaranteed help.

2 fans on top isn't helping. It's hurting. The top front fan is pulling most of the air from the upper front fan, making a simple path in-out. Very little of that upper fan is actually seeing any use at the cpu cooler. For that corner, just use the rear/top rear fans. You want a clearly defined intake area and exhaust area to create an airflow path, which is often why it's better to not muddy the airflow with excessive fans.

You can try removing that fan and putting it as intake under the gpu, after testing with Furmark and Prime95 small fft to get a baseline existing temp on gpu and cpu. Then retest and see if the temps have changed, whether better or worse.