Always try and opt for installing larger and slower spinning fans over smaller fans. Why is this important? The large, slower spinning fan is able to move the same amount of air as the smaller fan that has to work at a much faster rate to achieve the same results.
When a fan has to work harder, the more noise it makes. So larger fans not only cool the case efficiently, it also plays a vital role in building a quiet pc case
Note: When you’re looking at replacing or upgrading your fans, ensure that the fans you’re buying are models with “sleeve-bearing” rather than ball bearings if you’re aiming for optimal quiet performance.
Ensure that your fans have fan filters. Although most cases today come with pre-installed fan filters, some will not. If you find yourself in a situation where your case is needing filters, do so!
Without fan filters, dust clogging of the CPU can lower performance and cause it to overheat. Most individual fan filters are fairly cheap that you can purchase from PC-modding sellers. Be sure that the filters you are buying are the same size for your chassis intake fans.
Take some time to plan the layout of your fans. The general idea process you want to create is a setup that takes cool air from the front, runs it through the the HDD/CPU, and out the rear or top of the case.
Depending on the brand you have, some cases will come with ventilating features at the top panels that assist in dissipating heat quickly and efficiently. The airflow of your case is extremely important, take time in setting this up properly.
When mounting your fans, be sure they are fastened and screwed in all the way. Although it might not make a significant difference, it may help reduce any sort of rattling vibrations caused. These days, you can find fans that come with anti-vibration plugs that assist with noise vibrations.
The VGA/graphics card will run hotter than almost any other card in your PC. If your chassis provides very little flexibility with the placement of your cards, try and leave as much room as possible around your graphics card.
This can help you reduce any type of radio-frequency interferences with the sound card and provide cooling for your VGA card.
Do you have any suggestions or things that you've done to improve the cooling of your case? Share it with everyone in the comments below!