Xiaomi has expanded its high-end Redmi K90 series with the launch of the Redmi K90 Ultra. This performance-focused smartphone features a Snapdragon 8 Elite chipset, a massive 8,550 mAh battery, and an integrated 18.1mm active cooling fan to support intensive mobile gaming tasks.
What hardware powers the Redmi K90 Ultra?
The device runs on the Snapdragon 8 Elite chipset, which is paired with up to 16GB of LPDDR5X RAM. For storage, Xiaomi provided up to 512GB of UFS 4.1 internal memory. To manage the heat produced by these high-performance components, the phone includes an integrated active cooling system. This system utilizes an 18.1mm fan that operates at approximately 32 dB.
Performance is further bolstered by a dedicated D2 graphics chip. According to the company, this secondary processor is specifically designed to improve gaming efficiency and stability. The combination of active cooling and a dedicated GPU suggests Xiaomi is prioritizing sustained peak performance for mobile gamers.
How high is the display quality?
The Redmi K90 Ultra features a 6.83-inch AMOLED display with a resolution of 2,772 x 1,280 pixels. The screen supports a high refresh rate of up to 165 Hz, which is significantly higher than the 120 Hz standard found in most flagship devices. It also reaches a peak brightness of 3,500 nits, allowing for visibility in direct sunlight.
To improve user comfort during long periods of use, the panel supports DC dimming. This technology helps reduce flicker, which can often cause eye strain on mobile screens. The device is available in three color options: Space Silver, Shadow Black, and Sky Blue.
What are the battery and charging capabilities?
Xiaomi has equipped this model with an 8,550 mAh battery. This capacity is substantially larger than the typical batteries found in competing high-end smartphones. The device supports 100W wired fast charging to reduce downtime. It also includes 22.5W wired reverse charging, allowing the phone to act as a power bank for other devices.
Users should note that the Redmi K90 Ultra does not support wireless charging. This omission likely allows Xiaomi to prioritize the massive battery size and active cooling hardware within the device’s chassis.
What camera and audio features are included?
The rear camera system uses a 50 MP main sensor with a 1/1.55-inch format and Optical Image Stabilization (OIS). An 8 MP ultra-wide lens provides additional perspective options, while a 20 MP front-facing camera handles selfies and video calls.
For audio, the smartphone features two symmetrical stereo speakers. These speakers have been optimized by Bose to provide enhanced sound quality. On the software side, the device runs HyperOS 3, which is based on Android 16.
How much does the Redmi K90 Ultra cost?
Pricing for the Redmi K90 Ultra depends on the chosen memory configuration. According to data from TradingShenzhen, the estimated costs are as follows:
- 12GB/256GB: 2,999 CNY (~$441)
- 16GB/256GB: 3,199 CNY (~$470)
- 12GB/512GB: 3,499 CNY (~$515)
- 16GB/512GB: 3,699 CNY (~$544)
Xiaomi has not yet confirmed whether the Redmi K90 Ultra will be released in international markets or if it will remain a China-exclusive model.
Frequently Asked Questions
Does the Redmi K90 Ultra support wireless charging?
No, the device only supports 100W wired fast charging and 22.5W wired reverse charging.
What is the refresh rate of the screen?
The AMOLED display supports a refresh rate of up to 165 Hz.
What operating system does it use?
The phone runs HyperOS 3, which is built on Android 16.
What do you think about Xiaomi’s decision to prioritize a massive battery over wireless charging? Let us know in the comments below or subscribe to our newsletter for more tech updates.
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