Sorry total noob.

Computer

Hey guys, I built my PC last November and it's ran well since then but within the past few days I've noticed something that I think is a bit odd.

I bought The Witcher 3 to play when my friends aren't on or when I just want to play a good single player game. While playing, I noticed that my PC fans were speeding up and slowing down what I considered to be pretty randomly. I figured it was since I had a lot of the graphics turned up pretty high so I turned some of them down but the fans still seemed to be fluctuating in rpm's. I then noticed they were doing similar fluctuations while I was playing CS:GO, where I have all but one or two settings turned down as low as possible.

I have an NZXT kraken AIO so I checked the connections plugging in the pump to make sure they weren't loose or anything. I guess that really only leaves my GPU fans and case fans but I'm not sure what I need to do next if there is anything wrong in the first place.

My build is as follows:

Case: NZT S340 elite

CPU: Ryzen 5 1600

GPU: Asus Dual Series 1070

CPU Cooler: NZXT Kraken X62

Case Fans: stock NZXT for exhaust and stock kraken fans for intake

Edit: I usually play with headphones on so this may have started earlier but when i was playing The Witcher using my speakers is when I first noticed the fans doing this. I also had my headphones off when I was playing CS:GO and noticed it.

Hello all! I currently own an Air 903 Max case, which contains the first PC I've ever built, with the help of a friend. I'm facing the issue stated in the title though, the 3 frontal case fans run on full speed for some time, then the speed dips and goes back up on full RPM, as seen in the video posted below:

There's some other weird remarks as well. Firstly, on some games, the same pattern occurs whenever I change a setting, the texture quality for example. I mess with the setting? The fans become silent all of a sudden, then in a few seconds they sound like a Boeing that is ready to take off. Secondly, it's like they don't respond to the curves I've set in the FanControl app or in the BIOS. Don't know why's that, it feels like I've tried everything. At the beginning, I had all the fans connected to the fan hub and used the CPU_Fan port, which lead to the case fans not being detected by FanControl at all and only allowed me to mess with the RPM of my watercooling and my GPU fans. I tried moving the watercooling fans to the CPU_Opt port, leaving the rest as it is, but that didn't do the trick. Disconnecting the frontal fans from the built in hub and then connecting them to the Sys_fan ports (which is my current configuration), made them detectable by FanControl, but the changes done there did not help at all. Regarding Smart Fan Control in the BIOS(I have a Gigabyte B850 MB, if that helps anyone), I tried changing fan speed to Manual, while setting a similar curve to the one I have on FanControl and modifying fan mode to use the PWM option. All of these happened while having the CPU temp as a point of reference, but using the system temperature for the Sys_fan ports did not help, obviously. The thing that is bugging me is the fact that the PC is completely silent when I'm doing lighter tasks or playing games that are not that resource-heavy, the speed might ramp up once or twice, but that's it. It's not like my CPU's reaching hot temps while playing according to MSI Afterburner, it fluctuates between 50 and 70 degrees Celcius, something that does not justify the frontal case fans making that much noise. Here's my FanControl curve, for anyone that needs to see it:

It's also worth mentioning that taking control of the fans and slowing them down to 0% did not do what it was expected to do, with the fans continuing spinning, just like nothing happened.

All in all, that's it. If anyone needs some more info regarding the issue, I'll be glad to provide it, but I really need some help here, due to me being new to PC building and still learning the ropes. Thanks in advance nonetheless!

UPDATE:Turns out it was an AMD driver issue.Can't tell if it was from the CPU or the GPU side of things,but running the AMD Cleanup Utility and then reinstalling the drivers somehow did the trick.The funny thing on the whole story is that this wasn't even my initial purpose for reinstalling the drivers,I just wanted to get rid of an error I noticed in Event Viewer.2 birds with 1 stone I guess.Thanks to anyone who took time to try and help me!

I have noticed that my cpu fans will automatically ramp up when starting a game and immediately slow down once closing it. This can't be related to the temperature, is there a setting in bios to change this? I have been using intel cpu's so i'm not used to the rapid ramping up and down of cpu fans despite tuning the fan curve in bios.

Edit: Managed using bios fan curve settings (Gigabyte allows for less changes so multiple tests for performance had to be made, This "issue" was specifically for Gigabyte motherboard, basically it has shit options) and AMD Adrenalin settings. Undervolted GPU which might have helped as it appeared to be ramping up and down hard too.