# YouTube Modder Cools PC With 4kW AC Radiator October 31, 2026 at 09:20 AM > The TrashBench YouTube channel repurposed a Fujitsu AC radiator to slash RTX 3080 temperatures by 37°C during high-power testing. The YouTube channel **TrashBench** has successfully repurposed a used **Fujitsu** 4kW AC radiator into a custom cooling solution for high-end PC hardware. The experimental setup was tested on an **NVIDIA RTX 3080** and an **RTX 5060**, though the latter lacked headroom. Testing revealed that the RTX 3080 GPU temperatures dropped by 37°C at stock speeds. The radiator allowed the power limit to reach 459W, well above the 320W-350W stock range, while pushing the core clock to 2,130MHz despite an incredibly noisy stock pump. When an **Intel Core i9-14900K** was added to the loop, it reached a 230W power limit with temperatures falling from 74.8°C to 71.7°C. This project demonstrates the extreme thermal capacity of industrial AC hardware when applied to modern enthusiast components. #PCModding #RTX3080 [#TechNews]() #CustomCooling [#Overclocking]() ## Related news ## [Radeon RX 9070 GRE Hits Record 3.9 GHz Overclock]() November 1, 2026 at 09:23 AM ## [GravaStar Unveils Mercury Edge Gaming Headsets]() November 1, 2026 at 08:26 AM ## [Keychron Launches Q19 HE 8K Gaming Keyboard]() October 31, 2026 at 06:34 PM ## [YouTuber Converts Laptop DDR5 RAM for Desktop Use]() October 31, 2026 at 08:18 AM ## [KLEVV Launches CRAS V RGB PRIME DDR5 Memory]() October 28, 2026 at 12:07 PM