Xiaomi has officially unveiled the REDMI K90 Ultra in China, introducing one of the most powerful gaming-focused smartphones ever released under the REDMI brand. Equipped with Qualcomm’s flagship Snapdragon 8 Elite processor, a dedicated graphics chip, active cooling technology, and a massive 8,550mAh battery, the new device is designed to deliver sustained peak performance for mobile gamers and power users.
The REDMI K90 Ultra is available for purchase in China starting today, offering flagship-level specifications at a highly competitive price point.
REDMI K90 Ultra Pricing
The smartphone is currently available exclusively in China. Based on current exchange rates, Xiaomi’s launch pricing converts approximately to the following USD values:
- 12GB + 256GB: 2,799 yuan (~$390)
- 16GB + 256GB: 2,999 yuan (~$418)
- 12GB + 512GB: 3,299 yuan (~$460)
- 16GB + 512GB: 3,499 yuan (~$488)
Buyers can choose from three color options:
- Shadow Black
- Space Silver
- Sky Blue
6.83-Inch 165Hz Flagship Display
The REDMI K90 Ultra features a premium design built around a CNC-machined aluminum alloy frame with an anodized finish. The front is dominated by a large 6.83-inch flat display utilizing an advanced M10 substrate panel.
Display specifications include:
- 1.5K resolution
- 165Hz refresh rate
- Up to 3,500 nits peak brightness
- Large-radius corner design
- Ultra-smooth gaming and scrolling experience
The combination of high brightness and an extremely fast refresh rate makes the panel ideal for both competitive gaming and outdoor visibility.
Snapdragon 8 Elite and D2 Graphics Chip
Powering the REDMI K90 Ultra is Qualcomm’s Snapdragon 8 Elite platform, paired with Xiaomi’s D2 dedicated graphics chip.
Additional hardware includes:
- LPDDR5X Ultra memory
- UFS 4.1 storage
- Advanced gaming optimizations
- High-performance thermal management
This hardware combination enables high frame rates, faster loading times, and improved visual performance across demanding games and applications.
Active Cooling Fan Delivers Sustained Performance
One of the standout features of the REDMI K90 Ultra is its built-in active cooling fan.
Unlike conventional smartphones that rely solely on passive cooling systems, the K90 Ultra incorporates a physical cooling fan to improve heat dissipation during extended gaming sessions and heavy workloads.
According to Xiaomi, the fan operates at noise levels as low as 32dB while helping maintain stable performance under prolonged stress.
Despite featuring active cooling hardware, the device maintains exceptional durability certifications:
- IP66 dust and water resistance
- IP68 dust and water resistance
- IP69 dust and water resistance
The cooling fan module itself also supports:
- IPX8 water resistance
- IPX9 water resistance
This combination is rarely seen in smartphones equipped with active cooling systems.
Massive 8,550mAh Battery With 100W Charging
Battery capacity is another major highlight of the REDMI K90 Ultra.
The smartphone utilizes Xiaomi’s latest Jinshajiang battery technology, delivering a huge 8,550mAh capacity inside a single-cell design.
Charging features include:
- 100W wired fast charging
- 22.5W wired reverse charging
- Direct motherboard power supply during gaming
The direct power supply mode allows the phone to draw power directly from the charger during gameplay, reducing battery stress and heat generation while helping maintain long-term battery health.
Xiaomi and Tencent Jointly Optimize Gaming Experience
Xiaomi worked closely with Tencent to enhance gameplay performance in several of China’s most popular mobile games.
For Honor of Kings, the companies introduced customized e-sports touch optimizations targeting:
- Virtual joystick areas
- Skill button zones
- Mini-map interactions
The REDMI K90 Ultra has also received deep optimization for Peacekeeper Elite, including customized touch enhancements for movement, aiming, combat, and elimination scenarios.
These software-level improvements aim to increase touch accuracy and responsiveness during competitive gameplay.
Additional Premium Features
The REDMI K90 Ultra also includes a range of flagship-level hardware features:
- Bose-tuned 1115X symmetrical dual speakers
- 0815 X-axis linear vibration motor
- 3D ultrasonic fingerprint scanner
- Landscape network optimization
- Enhanced gaming audio effects
Together, these additions create a complete flagship gaming experience beyond raw processing power alone.
REDMI Pushes Further Into the Gaming Flagship Segment
With the launch of the REDMI K90 Ultra, Xiaomi is demonstrating its continued focus on high-performance smartphones that deliver flagship hardware at aggressive prices. The combination of Snapdragon 8 Elite performance, active cooling technology, dedicated graphics hardware, and an enormous 8,550mAh battery makes the device one of the most ambitious gaming-focused REDMI smartphones to date.
Currently, the REDMI K90 Ultra has been introduced exclusively in China, and Xiaomi does not have any plans for international availability.
