As the performance flagship in the Redmi K series, an upgrade to performance alone is far from adequate. Consumers today want to experience special and particular features that set them apart from homogeneous smartphone designs. For a great performance experience, Xiaomi has co-established a joint laboratory with MediaTek. This cooperation focuses on deep-level optimization and makes the Redmi K70 Ultra the first product of both cooperated companies.
The Redmi K70 Ultra will be fitted with the MediaTek Dimensity 9300+ flagship processor and paired with Xiaomi’s independently developed D1 chip for independent graphics processing in heavy games. For the very first time, AI Super Vision Engine technology will be applied in gaming to make it more vivid by super-resolution and interpolation technologies, further displaying the immersion in gameplay.
The K70 Ultra also offers up to 16GB of LPDDR5 RAM and up to 1TB of flash storage using UFS 4.0. The display is still 1.5K in resolution, striking a balance between power consumption and image quality, and has also been improved to support 8T LTPS material and 3840Hz ultra-high frequency PWM dimming.
Now, let’s dive into the phenomenal gaming experience with K70 Ultra, through its Dimensity 9300+ processor and dual-core D1 chip featuring solid graphics abilities.
Appearance
The Redmi K70 Ultra features a big 6.67-inch POLED flexible straight screen, co-developed with Huaxing. The screen includes Huaxing’s latest luminous material C8+ and 8T LTPS technology.
Screen specifications:
- Resolution: 2712×1220
- Refresh Rate: 144Hz
- Touch Sampling Rate: 480Hz, supporting an instantaneous rate of 2160Hz
- Color Gamut: P3
- Brightness: Up to 4000 nits
- Dimming: 3840Hz high-frequency PWM for eye protection
Dimensions and Design:
- Overall Size: 160.38×75.14×8.39mm
- Weight: 211g
- Frame: Metal straight-edge middle frame with rounded corners for comfort
The unit we reviewed is in the elegant Clear Snow White color. Adding more to its sleek and minimalistic design is the rear camera module, taking up around one-third of the back.
- Camera Setup:
- Primary Camera: 50MP
- Ultra-Wide Angle: 8MP
- Secondary Ultra-Wide Angle: 2MP
- Flash
From the side view, the rear camera module appears to separate into two layers, exuding a sense of class.
Other Features
- Ports: USB-C, speaker, SIM card slot
- Top Detail: Infrared sensor
- Charger: Fast-charging 120W GaN charger comes out of the box
The K70 Ultra brings state-of-the-art tech and the beauty of classic looks together for both exceptional performance and style.
Performance and Gaming
Equipped with the latest flagship processor from MediaTek, the Redmi K70 Ultra has pretty good performance. Its 8-core processor includes a 3.4GHz Cortex-X4, three 2.85GHz Cortex-X4 cores, and four 2.0GHz Cortex-A720 cores, paired with a 12-core Immortalis-G720 GPU clocked at 1.3GHz.
It features LPDDR5X memory with UFS 4.0 Flash Storage. These form an absolutely first-class performance trio.
Cooling system
The newest 3D ice-sealed circulation cold pump will directly contact the SOC with a 3D concave and convex platform and isolate heat between the screen area and the LHP to avoid accumulation in the Redmi K70 Ultra. This design allows for better temperature uniformity across devices.
Also, the high thermal conductivity graphite on the back and middle frame increases thermal conductivity by 15%. All these, combined with an ergonomic thermal conductivity architecture and an AI intelligent temperature control algorithm, guarantee the best heat management possible. The AI temperature control algorithm supports intelligent adjustments of temperature control under different conditions, through the combination of 12 NTC sensors and nearly 20 user scene algorithms.
Benchmark Performance
Our test unit, which had 16GB RAM and 1TB of storage, posted some pretty high scores. These include:
- AnTuTu V10: 2,177,282 points (CPU: 498,915, GPU: 876,236, MEM: 428,328, UX: 373,803)
- GeekBench 6: Single-core: 2271, Multi-core: 7608
On the GPU benchmarks front, here are the results recorded:
- GFXBench Aztec Ruins OpenGL: 201 FPS
- Aztec Ruins Vulkan: 198 FPS
- Car Chase: 137 FPS
- Manhattan 3.1: 255 FPS
- Manhattan Outrageous: 360 FPS
- Tyrannosaurus Rex Off Screen: 631 FPS
These results represent a performance gain of about 35% over the previous generation Dimensity 9200+, with quite a difference in GPU performance—up 46.5%.
Gaming Experience
Paired with the Dimensity 9300+, it has a dedicated graphics chip, the D1 chip, and Xiaomi’s AI Super Vision Engine for gaming with super-resolution and interpolation technologies. The Rage Engine 3.0 is Xiaomi’s performance scheduling strategy, integrating software and hardware together to do dynamic scheduling of output between the SoC and the discrete graphics card.
Game Testing: Honor of Kings
Settings: Very high frame rate; ultra-high resolution:
- Performance: The frame rate during runtime of 10 minutes remained at an average of 120.29 FPS
- Power consumption: The average measured power was 2.96W, while the energy efficiency ratio remained at 40.7 FPS/W
- Temperature: The maximum temperature in the chip area reached 34.5℃ and provided a cool and comfortable game experience.
The Redmi K70 Ultra supports superior performance and full-game immersive gaming, which would be more appealing to gamers and power users.
Image Performance
The camera performance of the Redmi K70 Ultra has been further upgraded to the level of a professional imaging phone, featuring a triple camera: 50MP primary camera, 8MP ultra-wide-angle lens, and 2MP macro lens.
Rear Camera
- Sensor: SLR-level CMOS Sensor Sony IMX906
- Sensor Size: 1/1.56 inch
- Features: Dual Native ISO DAG HDR, OIS (Optical Image Stabilization)
Although this has been reserved for high-end imaging and portrait phones, very impressively the Sony IMX906 sensor comes into the Redmi K70 Ultra.
Daytime Performance
The IMX906 main camera does great in daylight conditions and comes up with high-resolution shots, showing perfect color accuracy and providing all light and shadow details in a textured style that is quite surprising for a performance-oriented phone.
Night Performance
The IMX906 still has high image purity and excellent noise control at night. Improved dynamic range supports better low-light tolerance. The camera efficiently takes photos with minimal delay in snapping a picture, thus providing no lag and a seamless experience.
Difficulties
Although it does well in most situations, difficult lighting conditions—like brightly lit signs—tend to overexpose the highlights. Avoiding those environments while taking photos can help in maintaining the image quality.
Strengths
It captures clear and beautiful pictures in softer night scenes, like spotlighted walls or street lamps. Notably, this Redmi K70 Ultra can capture pretty night shots, which itself is pretty good performance for a performance-centric device.
With its Sony IMX906 main camera sensor, the Redmi K70 Ultra puts in some pretty impressive imagery features that could nearly rival dedicated camera phones, giving a single device for all in both camps of performance and photography enthusiasts.
Charging and Battery Life
It has gone to the hospital for the Redmi K70 Ultra in both charging speed and battery life, which comes with a large 5500mAh battery and 120W fast charge. This combination, backed by Xiaomi’s self-developed Pengpai P2 fast charging chip and Pengpai G1 power management chip, supports both fast charging and long battery life.
Battery Life
Xiaomi’s Starfish algorithm prevents damage to the battery, delaying its aging processes and ensuring that it can retain above 90 percent capacity even after 1,000 cycles.
Charging Test
The test is run in wired mode set to “Extreme Speed” from 5 percent battery power.
- 10 Minutes: 53 percent
- 20 Minutes: 83 percent
- 30 Minutes: Fully charged to 100 percent
Battery Life Test
Now, the Redmi K70 Ultra undergoes an extreme power endurance test using Fast Technology’s Battery Dog. Simulated testing on real users’ scenarios has been applied: CPU High Voltage, CPU Multi-threading, AI Recognition, Image Browsing, Video Playback, and Web Browsing. **Test Conditions**: Screen Brightness: 50%; Auto Brightness: Off; Volume: 30%.
From full power to 20% remaining, it’s 9 hours and 3 minutes—around 11.3 hours of life at full charge. This ensures that it’s not going to have an issue pounding through a whole day of heavy use.
On the basis of fast charging and strong battery life, the Redmi K70 Ultra can be called the best partner to those asking for something that would provide both high performance and the facility of long-lasting power.
Conclusion: Self-Developed Marvel of Flagship Performance
The Redmi K70 Extreme Edition proudly represents Xiaomi’s R&D capabilities. Other than the co-developed 1.5K screen, Xiaomi has also integrated its Pengpai P2 fast charging chip, Pengpai G1 power management chip, previously seen Pengpai C1 imaging chip from the MIX FOLD, and Pengpai S1 from the Xiaomi 5C; now, with the introduction of the D1 chip for enhanced gaming graphics, Xiaomi continues to push through the boundaries of its self-developed technology.
The R&D process is tough, but it underlines Xiaomi’s ambition in the self-developed chip domain. This refinement by Xiaomi allows control of its software and hardware ecosystem with the core technology at command, providing an enhanced experience to its users. That’s what this new shift from MIUI to HyperOS has taken up: flexibility and innovation.
The D1 chip, paired with the dual-core Dimensity 9300+, empowers a “Genshin Impact” gaming experience that has never existed before by providing ultra-resolution 1.5K resolution at 120 FPS with awesome power efficiency and temperature control. Co-developed with Xiaomi and MediaTek, together with Xiaomi self-developed chips, to ensure that Redmi K70 Extreme Edition remains unbeatable in the market.
Supplemental cooling solutions realized high-quality shots in predecessor models like the Redmi K70 Pro. In contrast, the K70 Extreme Edition can hold image quality and frame rate without external cooling. This more than proves the effectiveness of Xiaomi’s tuning and chip integration.
Imaging Improvements
Photography performed quite well in the Redmi K70 Extreme Edition, which really isn’t stressed too much in performance flagships. This can be upgraded to the Sony IMX906 sensor in imaging phones to bring about very good photo-taking performance, especially in dark light environments, which would be matched by mainstream imaging phones.
Battery and Charging
It comes with a 5500mAh battery and supports 120W fast charging that refills the device to full in just 30 minutes, providing a battery life of up to 11.3 hours. It represents one of the major improvements, giving at least 2 hours more screen-on time as compared to its predecessor.
Overall Performance
Redmi K70 Extreme Edition—This device is equipped with MediaTek’s processing power, along with Xiaomi’s self-developed chips. Users get very heavy gaming and impressive power consumption control. Comprehensive performance explains the “Ultra” well; hence, it is outstanding in the minds of users interested in performance or gamers.
