Why no quiet NZXT option?
We know a lot of readers really enjoy the design of NZXT or have a positive history with the brand. That said, we simply can’t recommend any of their cases when considering a silent build. The ones above are far superior and we would strongly suggest them. If your heart is really set on NZXT, the H510 has performed OK on some noise benchmarking tests, combined with quiet fans/water-cooling you could still achieve a relatively quiet build.
Further Advice on a Silent PC Build
The importance of cooling
As a lot of the above alludes to, the setup of your PC cooling and airflow is an integral part of what level of silence you’re going to build.
Below we talk about the hardware cooling requirements, remember: the physical layout of your PC is also key. Make sure when building your silent PC, you remove unneeded trays/disc shelves, neatly arrange your cables and position your parts to allow for airflow. Doing so means you have fewer cooling requirements and thus, less noise!
Is water cooling quieter than fan/air cooling? If you are running a very intensive build (I’m talking full-tower or a beefy mid-tower, expensive GPU/CPU with lots of other inner components) then water cooling will be your best choice (not just for silence, but for the advantages of superior cooling in general). The problem with fan builds is that noise tends to appear when you have a high quantity and they’re all blasting at maximum RPM.
For an average desktop, unless budget really isn’t a concern, we would say stick to fans. Frankly, the expense & complication of water cooling isn’t necessary unless you’re running a monstrous build (or really like the aesthetic). Just make sure you get fans that are designed for quiet performance as discussed below.
Want the absolute optimal setup for cooling and silence? Then get both! This may sound like an odd answer but it’s the truth. If you have both fans and a water cooling system in place, your fans can run at low RPM and the water cooling at low speeds. The real noise comes from when either system is working hard. So for silence, keep your cooling of choice running low.
Quietest PC Case Fans: We strongly recommend picking up some Noctuna NF-S12A FLX fans which rank excellently on noise tests and are the closest to silent PC fans you’ll find.
Quietest traditional CPU Cooler: This is an easy one: the Be Quiet! Dark Rock 4 is the choice for a CPU cooler with a focus on silence. In noise benchmarking, this cooler is nearly always one of the top on the list for decibel minimums and still ranks excellently on keeping CPU temperatures low.
Quietest CPU Water Cooler: We recommend the Corsair Hydro Series115i. The included fans are specialized for very low noise even at high-stress levels and the included Corsair software has a zero RPM mode that can turn off (silence!) when the fans aren’t actively needed. On top of this, the Hydro is a fantastic cooler in its own right regardless of its impressively low noise levels.
Final quick-fire tips for a silent PC
Glass panel vs no panel cases: If you care about silence, having a PC case without a window is going to be the quieter option. However, with the high-quality cases above mostly using thick tempered glass, the difference isn’t severe if you want to show off your beautiful build!
Go for SSDs over HDDs: Hard drives are prone to vibrate and spin at high speeds, you’ll likely be familiar with this noise. If you can’t afford a full SSD build, then just make sure to put your OS and most used applications on your SSD space.
High-quality PSU: Getting a Power supply that can more than handle your needs is important to reduce noise (similarly to your cooling, if a PSU is under heavy load, it’s going to be noisy!). We recommend the Fractal Design Ion+ range (high wattage is better but even the low watt options will cover most builders’ needs) – excellent performance, noise ratings, and user options to set the PSU fan to zero RPM at low loads.
Keep it clean: Dust and any other build-up in your PC will cause the cooling to work harder for performance. Clean regularly with compressed air for silence and a healthy machine.
Finally, enjoy the sound of silence!