A blogger built a "superchassis" for a computer using 15 Noctua fans, lowering the system temperature by 20 °C

Experimental megacooler from Major Hardware

In March popular YouTuber *Major Hardware* showcased his new CPU cooling system, where 15 small 30 mm fans are combined into a single 120 mm block. Not stopping there, he scaled the idea and created a huge “Superdome” (Super Dome) – a megacooler made of 15 Noctua A12X25 120 mm fans that completely replaces the side panel of a PC case.

How it was done

* Base – a 3‑D model of the side part of the Lian Li O11 Dynamic XL case. The dome stand was printed on a printer, and then fifteen Noctua fans were mounted to it.

* Materials – Noctua supplied all the necessary parts and materials for 3‑D printing after a request from Major Hardware. The blogger estimated the project cost at about $500 but noted that this is “quite expensive” for a simple set of fans. The company considered the venture a good PR move.

* Cables – The hardest part: routing wires to 15 fans. Major Hardware asked viewers not to stare too closely at the “catastrophe” of Y‑shaped connectors he used.

Performance and results

* The megacooler runs fairly quietly – noise is almost inaudible, while an ordinary computer under no load is louder.

* Power consumption: a standard Noctua A12X25 consumes up to 6.1 W, whereas the Superdome uses 27.6 W (due to lower voltage).

* While playing Battlefield 6, CPU temperature dropped from 86.3 °C to 66.9 °C.

Drawbacks

The main downside is lack of dust protection. Nevertheless Major Hardware does not intend to give up the megacooler: “It started as a meme, but I think I'll keep it on my PC because the cooling system works so well.”

How to build your own Superdome

* Lian Li O11 Dynamic XL case

* 3‑D printer (for the dome base)

* 15 Noctua A12X25 fans

Drawings and detailed instructions are available for free online.