Extreme RTX 3080 Modding: 11 Fans & 360mm AIO Cut Temps by 30°C

An enthusiast under the username TrashBench conducted an unusual experiment by installing 11 fans and a 360mm all-in-one liquid cooling (AIO) system on an Asus ROG GeForce RTX 3080 graphics card. The goal was to determine how extreme cooling would affect GPU temperature and performance.

Initially, the GPU’s load temperature was 70°C. After replacing the stock cooler with three Arctic case fans, the temperature dropped to 52°C. Swapping them for more powerful server-grade fans further reduced it to 50°C, though attempts to optimize airflow with tape backfired, raising the temperature to 54°C.

The next step involved adding five miniature server fans spinning at up to 15,000 RPM along the top of the PCB. Despite the noise comparable to a jet engine, the temperature stabilized at 50°C. The radical solution—replacing the rear fan with a 360mm AIO cooler—pushed temperatures down to an impressive 41°C.

However, performance gains were minimal. In Shadow of the Tomb Raider benchmarks, FPS increased by just 2-4 frames per second, even with overclocking. The experimenter admitted the results didn’t justify the effort but noted the striking visual and auditory impact of the modification.