Xiaomi just launched a phone with a built-in fan, and it’s not a gimmick, it’s the centerpiece of one of the most gaming-focused smartphones to come out of China this year. The Redmi K90 Ultra went official today in China, and it’s clear Xiaomi built this phone around one priority: sustained performance during long gaming sessions, even when other flagships start throttling.
The headline feature is the active cooling system. Xiaomi has packed an actual mechanical fan into the phone alongside an upgraded vapor chamber and enhanced thermal materials, with a rear air vent built right into the camera island. The company claims this setup can drop internal temperature by up to 10°C in roughly 100 seconds, and that the phone can sustain stable frame rates through up to 60 minutes of intensive gaming without noticeable throttling. That’s a meaningful claim thermal throttling is the single biggest reason flagship phones lose performance mid-session, and a physical fan tackles that problem more directly than software tricks ever could.
Powering all this is Qualcomm’s Snapdragon 8 Elite, paired with a dedicated D2 gaming graphics chip that Xiaomi says enables 144FPS gaming along with AI frame stabilization and eSports-focused touch optimization. The display matches that ambition: a 6.8-inch 1.5K LTPS OLED panel running at 165Hz, fast enough to actually take advantage of high frame rate gaming rather than just looking good on a spec sheet.
Battery life gets serious treatment too. An 8,500mAh cell with 100W wired charging means the phone is built to outlast extended play sessions rather than just survive a normal day. Memory options scale up to 16GB of RAM and a full 1TB of UFS 4.1 storage, which leaves plenty of room for the heaviest mobile titles.
Camera details remain thin for now a 50MP main sensor is confirmed, with a secondary rear camera Xiaomi hasn’t fully detailed yet. That’s expected for a launch this gaming-centric; the camera clearly wasn’t the priority here.
Software runs HyperOS 3 on Android 16, with IP68 protection and Wi-Fi 7 rounding out the connectivity. Xiaomi has positioned the K90 Ultra in the CNY 3,000 price segment, which is aggressive for hardware this specialized.
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