Redmi has officially pulled the curtain on the K90 Ultra 5G, putting months of leaks and speculation to rest. The launch event took place on June 30, 2026, at 7:00 PM local time in China, and the headline trick is hard to miss: this phone packs a genuine built-in active cooling fan.
That fan isn’t a gimmick. Redmi claims it can drop internal temperatures by up to 10°C, which matters when you’re pushing the silicon hard during marathon gaming sessions. The idea is simple — keep things cool, keep things fast, and don’t let thermal throttling ruin your frame rates an hour into a session.
Speaking of silicon, the K90 Ultra runs on the Snapdragon 8 Elite. It’s not the absolute latest chip on the block, but paired with active cooling it should stay near peak performance far longer than rivals relying on passive heat spreaders alone. Backing it up is a dedicated D2 interpolation chip for gaming, alongside e-sports touch controls and gaming audio optimisation — a clear signal about who this phone is courting.
The display is a treat for anyone who cares about motion clarity. You get a 6.83-inch flat AMOLED panel running at a blistering 165Hz refresh rate, with 3,500-nit peak brightness and full array DC dimming to keep eye strain in check. It’s bright enough to fight off sunlight and smooth enough to make scrolling feel buttery.
On the imaging side, Redmi keeps things sensible rather than spec-sheet-stuffed:
- 50MP main camera with OIS, built around a 1/1.55-inch sensor
- 8MP ultrawide for those step-back shots
- 20MP selfie shooter up front
It’s a focused setup — the main sensor is clearly meant to do the heavy lifting, and OIS should help on the stabilisation front.
Endurance looks like another strong suit. The K90 Ultra carries a substantial 8,550 mAh battery, feeds it with 100W wired charging, and even offers 22.5W reverse wired charging to top up your accessories. That’s a serious power reserve, and with the cooling system in place it should comfortably handle a full day of demanding use.
The configuration on offer pairs 16GB of RAM with 512GB of storage, putting it firmly in flagship-killer territory.
Pricing lands in the CNY 3,000 segment, roughly $440 — which makes the whole package look aggressive. A 165Hz screen, a giant battery, a gaming-grade chipset and an actual cooling fan for that money is the kind of value proposition Redmi has built its reputation on. If you want a gaming phone that refuses to slow down, the K90 Ultra is making a loud case for itself.
