Xiaomi (小米) REDMI (红米) K90 Max "Air Cooling Radiator — The Battle of the Gods" Concludes: 4‑Hour MOBA Load Test Peaks at 36.7°C

Result from the live contest

Xiaomi (小米) hosted a livestreamed contest pitting fan‑cooled phones against one another to test sustained thermal performance. It has been reported that Xiaomi founder and CEO Lei Jun (雷军) announced the REDMI (红米) K90 Max finished a four‑hour MOBA stress test (144 fps, extreme graphics) with a maximum surface temperature of 36.7°C. The match ran in a 37°C+ heavy‑load environment and was billed as a head‑to‑head of mainstream air‑cooled smartphone solutions.

Design and cooling details

The K90 Max’s "Space Silver" colorway and aluminum mid‑frame were shown alongside technical claims about a new wind‑cooling system. Reportedly the handset uses a larger‑diameter fan—about 6% bigger than mainstream solutions—with a vertical intake, forward‑tilted blades for pressure guidance and a quoted airflow of 0.42 CFM. Xiaomi also highlights ingress protection on the full device (IP66/IP68/IP69), and a narrow‑bezel chassis with a minimalist grille intended to balance fan performance and industrial design.

Why this matters

Redmi is Xiaomi’s value‑focused sub‑brand, but Chinese OEMs increasingly compete on cooling and sustained performance as much as peak specs. Why care about a few degrees? Because prolonged gaming determines throttling, frame stability and perceived battery life — all major buying factors for mobile gamers. It has been reported that the live demo aimed to turn hardware demonstrations into marketing credibility; whether that translates into real‑world advantage across different titles, ambient conditions and long‑term use remains to be independently verified.