Loud PC post build

[hinchuni14e302d1]

Hello, I just completed a (mostly msi) build and I love the aesthetics / performance so far.

I have the MSI EDGE z690, MSI Gungnir 100r, and the mag coreliquid 360r radiator cooling a 12900k. Temps are pretty good (24-30c idle). The case has two fans mounted for exhaust at the top; one in the back for exhaust, and the coreliquid 360r front mounted.

My biggest issue so far has been the NOISE; it's nuts. I checked the idle fan speeds in bios and it says the CPU fan is running around 500-600rpm, the system fans are running around the same 300-500 rpm, and the pump fan is running around 2700rpm. I'm wondering if the noise is that loud due to the case design or if it's just the fans. The case design is very open with more or less a metal barrier and a magnetic mesh anti dust strip between case and the fans. It's kind of annoying though watching back a video or music I'm now finding myself turning up the volume to drown out the fan humming noise.

Any suggestions would be great. I do have some other fans in my old system that I could try swapping in, but from what I've heard the MSI case fans are supposed to be decently quite (quick google search) so I'm not sure why mine are so loud. I put my ear around the case to see if I could locate a single source of loudness; but they all sound relatively the same loudness. Thanks J

 

[citay]

So you basically have three big "intake" fans (on the radiator) and three exhaust fans, in a pretty open case. This can easily make some noise even at lower RPM, depending on the fans, the air turbulence, and the fact that the air has to go through various obstacles like the radiator.

I would check in the BIOS, there should be room for optimization in the fan curves. I always do this in the BIOS, this way i don't have to mess around with any Windows software, and my settings are always applied right from boot, no matter what i do. I explained here how to set it up correctly: Guide: How to set up a fan curve in the BIOS

For example, in idle, you can turn down the fan speeds basically almost as low as they go. With your powerful CPU cooler, it still easily keeps the temperatures in check. There's no reason to forcibly keep it below 30°C for example, therefore you have lots of wiggle room with the fan speed. The idea is, the more powerful your cooling, the less noise you can set it to. Now, with a 12900K, that's easier said than done, because in typical Intel fashion, they again drove their top model over the limit of what they should have done, in order to win some benchmark comparisons. So it's a beast to cool under load.

Also, your case wouldn't have been my first choice, the front is decent, but it's not ideal for airflow. This is your case:

Here's a similarly-priced case where the front is better suited for airflow (be quiet! Pure Base 500DX):

I understand there's an MSI MPG Gungnir 110M with a mesh front, and while looking less fancy, it would obstruct the airflow less:

But ok, you have to deal with what you have, and there should be enough room for optimization once you get the settings right. What spare fans do you have?

 

[darkhawk]

What GPU are you using?
Are you certain it's the case fans and such and not the GPU?

Lastly.....have you tried disconnecting each of the fans to see if any particular fan is the one causing the issues?

 

[hinchuni14e302d1]

What GPU are you using?
Are you certain it's the case fans and such and not the GPU?

Lastly.....have you tried disconnecting each of the fans to see if any particular fan is the one causing the issues?

I took the 2070s out of my previous build that I had in an air cooled 2700x node 804 case. Honestly hardly heard any noise from that case.

But ok, you have to deal with what you have, and there should be enough room for optimization once you get the settings right. What spare fans do you have?

I have 3-4 beQuite non RBG fans case fans, and 3 RBG amazon fans (forgot the brand, but they seemed quite at least in my last case. I could try swapping out the system fans with the beQuite ones to see if there's any difference then proceed with the radiator fans after.

BTW: I did configure the BIOS to run the fans at less speed already, when I had my window open (up here in Canada) the fans stopped spinning lol so it seems to be working in regards to the case temp. Even on low rpm they sound loudish.

That is an interesting concept though the fact that the fans are pushing the air into the radiator. I'm wondering if I reverse the airflow if that would be better for noise. Have it exhaust the front, and intake the other side (seems odd) but maybe it would help.

 

[citay]

Have it exhaust the front, and intake the other side (seems odd) but maybe it would help.

Usually you would have the intake on the front and exhaust on the rear and top. Even if the radiator dumps a lot of heat into the system, but that should go right back out the rear and top. This is the first thing you could try. Of course, ideally you would have a case where the radiator could be mounted in the top position, that's the best position to extract the heat right away (and hot air rises too).

But again, you have to work with what you got. With a radiator in the front, this is the best setup:

So instead of swapping out the fans altogether, first try this airflow orientation.

 

[hinchuni14e302d1]

Usually you would have the intake on the front and exhaust on the rear and top. Even if the radiator dumps a lot of heat into the system, but that should go right back out the rear and top. This is the first thing you could try. Of course, ideally you would have a case where the radiator could be mounted in the top position, that's the best position to extract the heat right away (and hot air rises too).

But again, you have to work with what you got. With a radiator in the front, this is the best setup:

So instead of swapping out the fans altogether, first try this airflow orientation.

That is how it's currently set up. Performance wise I think it's great; but it's just really loud. I guess I'll keep this set up and look into replacing fans.

 

[citay]

Ah ok, that is your configuration already. I misunderstood. Yeah, keep it like this. Try the "be quiet!" fans, they should be good. Also, like darkhawk said, try to isolate the main noise makers. In the BIOS, turn off all fans (don't worry, the system will survive it, it's not under full load), then turn them on one by one until you find the ones that really add some noise. Play with the fan speeds in the BIOS. There has to be a sweet spot with all of this.

 

[hinchuni14e302d1]

Ah ok, that is your configuration already. I misunderstood. Yeah, keep it like this. Try the "be quiet!" fans, they should be good. Also, like darkhawk said, try to isolate the main noise makers. In the BIOS, turn off all fans (don't worry, the system will survive it, it's not under full load), then turn them on one by one until you find the ones that really add some noise. Play with the fan speeds in the BIOS. There has to be a sweet spot with all of this.

That's actually a great idea to turn them all off and back on one by one. Thanks

 

[hinchuni14e302d1]

Alright so shutting them off one by one was a great idea. Once i shut them all off; I noticed two of the front fans were spinning still. I checked the wiring; and looks like the daisy chaining wasn't done properly (whoops) fixed that and it's MUCH more quite. Cheers.