GoKawiilFor anyone who has built their own PC, you probably know that incredible feeling of accomplishment when you finish. For an enthusiast, there’s just nothing like it. Flipping on the power switch, then pressing the power button on the case, and that sense of relief once you actually see the BIOS screen and watch it all come to life, accompanied by a swathe of RGB lighting illuminating the chassis like a warehouse rave.
There's the added benefit of hearing the machine finally take its first breaths, the fans spin up, creating a rush of air through your case. But then there’s that ever-constant hum in the background of those fans and the wind noise and other vibrations that make up the whole of the noise coming from your PC.
There are a few people out there, masochists perhaps, who don’t care about noise. The rest of us strive to have a quiet PC. Why a silent PC, some may ask? A silent PC helps with immersion if you’re a gamer, or can improve productivity by not being a loud distraction. You may be thinking, “I’ll just buy quiet fans and be OK.” And, in part, you’re not wrong.
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But noise comes from a variety of sources. Be it fans on your case or on your AIO/CPU Air Cooler, a video card, or even chipsets and VRM heatsinks; fans are everywhere. There’s also noise from hard drives, pumps in an AIO or custom loop coolers, the ever-annoying coil whine, and even resonant vibrations from the chassis.
The good news is that, aside from coil whine, everything else is something you can mitigate in some fashion. Unfortunately, coil whine is something you simply have to tolerate, unless you want to apply clear nail polish to the chokes/inductors. You may be able to RMA the product due to coil whine, but you could be in the same boat after if it's a problem that plagues you later down the line.
Noise in your PC is, in fact, a byproduct of heat and airflow, and achieving the quietest PC possible requires balancing multiple competing factors. You also have to consider the tone versus loudness. Specific frequencies, like the high-pitched squeal of the chokes, can be more unappealing than lower-frequency noises. Building a quiet PC is not just about fans and buying better parts, but about working within the physical limits of your setup and figuring out how much money you’re willing to spend on silence.
Why it's challenging: the physics problem
The higher your processor or video card’s TDP/TBP (Thermal Dynamic Power/Total Board Power), the louder it gets, or the more cooling area you need to keep things quiet. The more powerful a system is, the more headwinds you face to keep it cool and prevent thermal throttling. In other words, it requires more effort to remove the heat from a fire-breathing 600W RTX 5090 and a 200W Ryzen 9 9950X3D2 than it does from a 250W RTX 5070 and a 120W Ryzen 7 9800X3D.
Thermal density on the dies themselves has also increased dramatically over the last several years. As more transistors are packed into a tiny space and stacked on top of each other, it becomes physically harder to remove the amount of heat generated within the same space. Because of this and other factors, keeping today’s high-end processors at or below their throttling points has become increasingly difficult, requiring larger coolers and more airflow to keep them running at peak performance.
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