Question Loud fans when in games.

Mar 30, 2019
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Intel Core i9-9900K
Nvidia RTX Palit 2080
Kingston SSDNow V300 120GB
Seagate Video SV35.6 Series 2TB
G.SKILL F4 DDR4 3200 C16 2x16GB
Gigabyte Z390 AORUS PRO
CORSAIR HXi Series HX850i PLATINUM
Noctua DH-15
WIN 10

PC CASE is COUGAR PANZER EVO RGB. It came with 4 120mm fans mounted - 3 in-front and 1 in the back.

I also put 2 Noctua 140mm NF-A14 on TOP of my case. And got the Noctua DH-15 as I've mentioned.

Pictures from HWMonitor when in game in PUBG:

View: https://imgur.com/a/abIBybr


I had loud noise even when I was only browsing. It was from the front dust filter which I readjusted. Then I thought there's an issue with the top duster and removed it which decreased the noise a bit. Still it's damn loud.

The Fan4 I assume is the back fan and I guess it's normal for it to run a bit higher? I have no idea. Do I need to lower the fan speeds in bios? I've never done it so not sure on the particular details. I struggled with my previous case with the temperatures. Now that I've pushed them down due to having a bigger case and more fans, I'm struggling with the noise. Always something else around the corner.

Any help would be appreciated.
 
Gigabyte has motherboard software that includes fan controls. Its usually better than what you get with bios, but since each bios is different its kinda hard to judge. What I see is a 9900k that's running at 70ish°C. In bios, by default, that means all fans will be running at 100% duty cycle. Bios adjusts duty cycle according to temp, not rpm, so it won't matter if the fan is 1000rpm or 3000rpm rated, it'll get run at 100% speeds. This is where most noise comes from, that 30% or so difference between best airflow-noise and max. Most fans above @ 900-1000rpm start getting loud, even Noctua, but that last 30ish% only raises performance @ 5%.

In bios its easy. Change the max duty cycle limit to @ 70% OR raise the target from 70°C to 80°C. The first way keeps the standard curve, but caps fan speeds at 70%, and the second lengthens the curve, effectively lowering rpm across the board, until it reaches 80°C at which point it'll apply 100% duty cycle.

You'll be able to change the settings for all the headers, some bios also give the ability to swap sensors, so you'll not have intake fans set to cpu, but to motherboard case temps, or gpu temps or whatever.

You'll have to play around with settings there, first save a profile of what you have now, then adjust fans as wanted or needed, just don't save to profile #1, make an adjusted profile #2 or more, so you can always reload a prior setting. Do this in stages and monitor temps of case, cpu etc and play until you can live with the results. Sorry, but there's usually no quick and easy answer as your tastes will differ from others and only you can tell when things are or aren't right for you.

BTW, bigger case and more fans doesn't necessarily mean automatically that you'll get lower temps. The best airflow cases around are mid tower ATX, with just 3x intakes in front and 1x 120mm in rear. No top fans or even top venting. It's all just a matter of what fan and what's livable.
 
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