How many case fans for the RTX 4090? Do you need more?

So much power and enerrgy, can your case deal with all that heat eminating from the behemoth?

Sebastian Kozlowski

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So how many case fans do you need for the RTX 4090? Whenever you are planning to purchase a new graphics card to fit into the build, you’re going to have to keep the cooling in mind and may wonder if you have enough case fans. The Nvidia RTX 4090 comes in a size of 304 x 137 x 61 mm. And that’s the Founder’s Edition, the custom cards are even bigger. Even the previous generation RTX 3090 (305 x 136 x 61 mm) series was enormous itself. So it won’t be a surprise that a further increase in the size of the 4090 will bring you a little bit of trouble when it comes in regard to the case.

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Do I need more case fans for the RTX 4090?

In addition to the change in dimensions, even the fans on the RTX 4090 are much larger in comparison to the 3090. So with a thicker and longer card, you’ll have to pay even closer attention to dimensions.

Analyze the size of the GPU and the size supported by the case of your build to make sure that it can settle in. Also keep in mind any additional upgrades, such as adding a radiator to the front, further shortening the GPU length supported.

In conclusion, if you already have a GPU installed with similar dimensions in your case, you’re probably good to go with the new RTX 4090 unless you’re really restricted on clearance. But just in case you are really restricted on the clearance, that’s not a good sign with cards that can consume 450W or more power.

Using a more spacious case for extreme GPUs like the 3090 and 4090 would be optimal, as the new fans improve airflow by up to 20%. Restricting the airflow could lead to excessive heating as your GPU still needs fresh air to make its way in for the best cooling. With a lack of airflow in the case, you could suffocate the card or the rest of the components.

So if you have already filled your case with fans you need not worry. However, if you still have open spaces it’s best to fit more in. As this means you can get all that energy out and keep your performance up.

Consider: Case fans on Amazon US, Best Buy, or Amazon UK

ASUS ROG Strix RTX 4090 OC

Core Clock Speed

2,640 MHz boost

CUDA Cores

16,384

Memory Size

24GB GDDR6X

Dimensions

357.6 x 149.3 x 70.1mm

PSU Required

1000W

TDP

450W

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