Xiaomi has added another entry to its series of premium smartphones with the unveiling of the Redmi K90 Ultra in China. Featuring high performance and designed primarily for gaming purposes, the latest member of the K-series boasts a Qualcomm Snapdragon 8 Elite processor, an active cooling fan, an 8,550 mAh battery, and a 165 Hz AMOLED panel. In addition to the aforementioned, the smartphone includes a special D2 AI gaming chip, Bose stereo speakers and 100 W wired fast charging.Key Highlights Redmi K90 Ultra is out in China. Boasts Qualcomm Snapdragon 8 Elite chipset. Comes with 6.83 inches 1. 5K AMOLED display with a 165 Hz refresh rate. Fitted with an 8,550 mAh battery supporting 100 W wired fast charging. Features an active cooling fan that allegedly cools down the device by up to 10 degrees Celsius. Features a dedicated D2 AI gaming graphics processor and stereo speakers tuned by Bose.Redmi K90 Ultra focuses on gaming with flagship hardwareRedmi K90 Ultra is created with gamers' preferences in mind. Its main processor is the latest Qualcomm Snapdragon 8 Elite, produced on TSMC's second-generation 3nm technology. This chipset comes with the Adreno graphics, Qualcomm AI Engine, 16GB LPDDR5X memory, and 512GB UFS 4.1 storage capacity.In order to boost the gaming capabilities of the phone, Redmi added its own D2 AI gaming graphics chip, which increases the level of picture resolution and maintains a high frame rate while playing compatible games. Redmi claims that its phone is equipped with an active cooling fan that can reduce the smartphone's temperature by 10 degrees Celsius in just 100 seconds.165Hz AMOLED display aims to deliver smoother visualsThe Redmi K90 Ultra comes with a big, 6.83-inch AMOLED screen and sharp 1. 5K resolution (1280×2772 pixels). But the real eye-catcher is the super-fast 165Hz refresh rate - one of the highest you can find on any smartphone right now.It handles just about any HDR you throw at it, including HDR10+, HDR Vivid, and Dolby Vision. You get crazy brightness, too - up to 3,500 nits - so even bright sunlight isn’t a problem. If you like gaming, the display’s 480Hz touch sampling rate (which can spike up to 3,500Hz) means your taps and swipes register instantly, keeping lag out of the picture.Out of the box, the phone runs on HyperOS 3 (based on Android 16), so you get Xiaomi’s latest software features from day one.Dual cameras and premium multimedia featuresAs for the camera aspect of photography, the Redmi K90 Ultra phone has a dual rear camera system, which consists of a 50 MP Light Hunter 800 main camera with a 1/1.55” sensor size. Moreover, it is complemented by an 8 MP ultra-wide-angle camera, while selfies are taken with a 20 MP front camera.Regarding the multimedia experience provided by the phone, the Redmi K90 Ultra has two symmetric stereo speakers that are engineered by Bose. In addition, the speakers have Dolby Atmos, Hi-Res Audio and Hi-Res Audio Wireless certifications.Moreover, the phone has a triple IP rating including IP66, IP68, and IP69 certifications, thus providing dust and waterproof resistance under various usage scenarios.Massive battery and fast charging headline the packageAnother highlight of this smartphone is the Battery Life of the Redmi K90 Ultra. This smartphone features a decent-sized 8,550mAh battery, which is one of the biggest batteries on any flagship smartphone this year.This battery offers 100W wired fast charging and comes with a 100W GaN charger that the company has included in the package. Additionally, there is 22. 5W wired reverse charging that will enable you to charge your compatible accessories and other devices.In order to improve the battery life and charging efficiency, the company has equipped this smartphone with a Surge P3 charging chip and a Surge G2 battery management chip.In terms of connectivity, this smartphone offers 5G, Wi-Fi 7, Bluetooth 5.4, NFC, GPS, NavIC, BeiDou, Galileo, GLONASS, QZSS, A-GNSS, and USB Type-C. Other hardware includes an IR Blaster, X-axis linear motor, a Gyroscope, an electronic compass, an ambient colour temperature sensor, an optical proximity sensor and dual light sensors.Redmi K90 Ultra price and availabilityThe Redmi K90 Ultra is available in Space Silver, Shadow Black, and Sky Blue colour options.Pricing in China is as follows:VariantPrice12GB + 256GBCNY 2,799 (approx. Rs. 40,000)16GB + 256GBCNY 2,799 (approx. Rs. 40,000)12GB + 512GBCNY 3,299 (approx. Rs. 47,000)16GB + 512GBCNY 3,499 (approx. Rs. 50,000)The smartphone is currently available in China. Redmi has not announced details regarding its global availability.Redmi K90 Ultra specifications at a glanceFeatureDetailsDisplay6.83-inch 1. 5K AMOLED, 165Hz refresh rateProcessorQualcomm Snapdragon 8 EliteGPUAdreno GPUGaming ChipD2 AI graphics chipRAMUp to 16GB LPDDR5XStorageUp to 512GB UFS 4.1Rear Camera50MP + 8MPFront Camera20MPBattery8,550mAhCharging100W wired, 22. 5W reverse chargingCoolingBuilt-in active cooling fanAudioBose-tuned stereo speakers with Dolby AtmosOperating SystemAndroid 16-based HyperOS 3Water ResistanceIP66, IP68 and IP69Frequently Asked QuestionsQ1. Why is Redmi K90 Ultra unique compared to other flagship phones?The Redmi K90 Ultra comes with flagship-grade specifications along with features designed specifically for gamers, including a dedicated D2 AI gaming processor, a cooling fan, a 165Hz AMOLED screen and Bose audio-tuned stereo speakers.Q2. How big is the battery on Redmi K90 Ultra?This smartphone comes equipped with a battery that has a capacity of 8,550 mAh and supports fast charging at speeds up to 100W and reverse charging up to 22. 5W.Q3. Is Redmi K90 Ultra dust and water resistant?Yes. This smartphone offers protection from dust along with protection from different types of water exposure through IP66, IP68 and IP69 certification.Q4. What type of display does Redmi K90 Ultra feature?It offers a 6.83-inch 1. 5K AMOLED display with a 165Hz refresh rate, HDR10+ and HDR Vivid certifications and support for Dolby Vision up to 3,500 nits of peak brightness.end of article