Xiaomi Redmi K90 Pro Max VS Xiaomi Redmi Turbo 4 Pro

Both the Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro offer waterproof designs with an IP68 rating, ensuring they are resistant to dust and can withstand submersion in water. In terms of build, neither phone has a rugged design, so they are not specifically built for extreme durability.

When it comes to size and weight, the K90 Pro Max weighs 218 g, while the Turbo 4 Pro is slightly heavier at 219 g. The K90 Pro Max has a thickness of 7.9 mm, while the Turbo 4 Pro is a fraction thicker at 8 mm. The width and height of both devices are almost identical, with the K90 Pro Max measuring 77.8 mm in width and 163.3 mm in height, and the Turbo 4 Pro being just slightly wider at 77.9 mm and slightly shorter at 163.1 mm.

The volume of the two phones also shows minor differences, with the K90 Pro Max having a volume of 100.37 cm³, while the Turbo 4 Pro comes in at 101.64 cm³, making the Turbo 4 Pro marginally bulkier overall.

The Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro both feature OLED/AMOLED displays, ensuring vibrant colors and deep blacks. The K90 Pro Max has a screen size of 6.9″, while the Turbo 4 Pro's display is slightly smaller at 6.83″. The K90 Pro Max has a pixel density of 416 ppi, whereas the Turbo 4 Pro offers a higher pixel density of 447 ppi, providing slightly sharper visuals.

In terms of resolution, the K90 Pro Max has a resolution of 1200 x 2608 px, compared to the Turbo 4 Pro's 1280 x 2772 px, which results in a higher resolution on the Turbo 4 Pro. Both devices support a 120Hz refresh rate, ensuring smooth scrolling and gaming performance, but the K90 Pro Max supports a lower touch sampling rate of 480Hz, while the Turbo 4 Pro boasts an impressive 2560Hz touch sampling rate, offering potentially faster response times.

Both phones support HDR10, HDR10+, Dolby Vision, and feature Always-On Displays, making them capable of delivering high-quality, vibrant content with excellent color accuracy. The K90 Pro Max has branded damage-resistant glass, while the Turbo 4 Pro does not, which may influence the durability of the screen. Neither device features a secondary screen, and both are equipped with a touch screen.

The Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro both come with 1024GB of internal storage and 16GB of RAM, providing plenty of space and memory for demanding tasks. However, the two differ significantly in performance metrics. The K90 Pro Max has a higher AnTuTu benchmark score of 4,350,000 compared to the Turbo 4 Pro’s 2,406,698. The K90 Pro Max also scores higher in Geekbench 6, with 10,059 in the multi-core test and 3,234 in the single-core test, while the Turbo 4 Pro scores 6,880 in multi-core and 2,154 in single-core tests.

Both phones use Qualcomm Snapdragon chipsets, but the K90 Pro Max is powered by the more recent Snapdragon 8 Elite Gen 5, while the Turbo 4 Pro uses the Snapdragon 8s Gen 4. The K90 Pro Max’s CPU features 2 cores at 4.6 GHz and 6 cores at 3.62 GHz, while the Turbo 4 Pro’s CPU has a more complex setup with 3 cores at 3.01 GHz, 2 cores at 2.8 GHz, 2 cores at 2.02 GHz, and 1 core at 3.21 GHz. The K90 Pro Max also has a slightly faster GPU clock speed of 1200 MHz, compared to the Turbo 4 Pro’s 1150 MHz.

In terms of memory and processing power, the K90 Pro Max has a faster RAM speed of 5300 MHz, compared to the Turbo 4 Pro’s 4800 MHz. The K90 Pro Max also benefits from a smaller 3 nm semiconductor size, which can contribute to better power efficiency, while the Turbo 4 Pro uses a 4 nm semiconductor. The maximum memory bandwidth of the K90 Pro Max is higher at 85.1 GB/s, compared to the Turbo 4 Pro’s 76.8 GB/s. Additionally, the K90 Pro Max has a larger L2 cache of 12 MB, while the Turbo 4 Pro has 6 MB, which could have an impact on data processing speed. The Turbo 4 Pro, however, supports one display, while the K90 Pro Max can support two displays.

The Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro both feature dual-lens main cameras. The K90 Pro Max has three 50 MP lenses, while the Turbo 4 Pro has a 50 MP main camera paired with an 8 MP secondary lens. The wide apertures of the K90 Pro Max's lenses are 1.7f, 2.4f, and 3f, while the Turbo 4 Pro's lenses have a 2.2f and 1.5f aperture. This means the K90 Pro Max may capture more light, especially in low-light conditions, due to its wider apertures. Both devices support optical zoom, but the K90 Pro Max offers a 5x optical zoom, while the Turbo 4 Pro has no optical zoom (0x).

For video recording, the K90 Pro Max supports up to 4320 x 30 fps, whereas the Turbo 4 Pro records at 2160 x 60 fps, offering higher frame rates but at a lower resolution. Both phones support slow-motion video recording, have phase-detection autofocus for photos, and allow for continuous autofocus during video recording. The K90 Pro Max includes a dual-tone LED flash with two flash LEDs, while the Turbo 4 Pro uses three flash LEDs but lacks a dual-tone LED flash.

The front camera on the K90 Pro Max is 32 MP, while the Turbo 4 Pro has a 20 MP front camera. Both devices have a wide aperture of 2.2f for their front cameras. The K90 Pro Max supports shooting in raw format, while the Turbo 4 Pro does not. Both devices support timelapse, panorama creation, manual exposure, and touch autofocus. Notably, the K90 Pro Max features laser autofocus, which is absent in the Turbo 4 Pro. Both phones lack a front-facing LED flash and a dual-lens front camera.

The Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro both run on Android versions, with the K90 Pro Max using Android 16 and the Turbo 4 Pro using Android 15. Both devices include a range of privacy and security features, such as clipboard warnings, location privacy options, camera/microphone privacy options, and the ability to block app tracking. However, neither device offers Mail Privacy Protection. They both support theme customization, dynamic theming, and dark mode, allowing for personalized visuals, and both can block cross-site tracking, though neither device blocks it fully.

Both devices also come with useful productivity features like on-device machine learning, notification permissions, media pickers, and the ability to play games while they download. Additionally, both support battery health checks, have an extra dim mode, and allow for app offloading. They also have full-page screenshot capabilities, split screen support, and PiP (Picture-in-Picture) functionality, providing various ways to enhance multitasking.

In terms of system features, both phones have offline voice recognition, voice commands, and support for widgets, but the K90 Pro Max runs on Android 16, which is one version ahead of the Turbo 4 Pro’s Android 15. Both devices support a multi-user system and share many core features like customizable notifications, Live Text, and the ability to track the current position of the device. Neither device supports direct OS updates, Quick Start, or has the ability to be used as a PC, with no other notable differences in this category.

The Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro have similar battery capacities, with the K90 Pro Max featuring a 7560 mAh battery and the Turbo 4 Pro slightly behind at 7550 mAh. Both phones have non-removable rechargeable batteries and a battery level indicator, allowing users to easily track their remaining power. However, the K90 Pro Max stands out with support for wireless charging, a feature not available on the Turbo 4 Pro.

When it comes to fast charging, both devices support this feature, but the K90 Pro Max has a higher charging speed of 100W, compared to the Turbo 4 Pro's 90W. This means the K90 Pro Max may charge slightly faster under optimal conditions, though both devices support fast charging for quick top-ups.

Both phones do not have removable batteries, ensuring they are sealed for water and dust resistance, and both feature rechargeable battery systems. The K90 Pro Max also provides the additional convenience of wireless charging, which the Turbo 4 Pro lacks.

Both the Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro lack a 3.5 mm audio jack, so users will need to use Bluetooth or USB-C audio solutions. Both devices feature stereo speakers, providing an enhanced audio experience with clear and immersive sound. However, the K90 Pro Max does not support any advanced audio technologies like aptX, LDAC, or aptX HD, while the Turbo 4 Pro includes support for aptX, which is designed to improve wireless audio quality over Bluetooth.

Neither device supports aptX Adaptive, aptX Lossless, or LDAC, and neither has a built-in radio. This means that while both phones provide decent wireless audio performance, the Turbo 4 Pro has an edge with its inclusion of aptX support for better Bluetooth audio streaming.

Both the Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro offer robust connectivity features, including 5G support and NFC. They both support the same Wi-Fi standards, including Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), and Wi-Fi 7 (802.11be), ensuring compatibility with the latest networks. Both devices also support dual SIM cards and include Bluetooth 5.4. However, the K90 Pro Max features a USB 3.2 port, while the Turbo 4 Pro uses a slightly older USB 2.0 version.

Regarding data speeds, the K90 Pro Max offers a significantly higher download speed of 10,000 MBits/s, compared to the Turbo 4 Pro's 4,200 MBits/s. Both devices share the same upload speed of 3,500 MBits/s. They also both include a fingerprint scanner, GPS, a compass, an infrared sensor, and an accelerometer for enhanced functionality.

Neither device supports an external memory slot, and both lack features like a barometer, HDMI output, or 3D facial recognition. Other shared features include Galileo support, cellular modules, and motion or optical tracking. Neither phone includes a stylus, built-in projector, or iris scanner. Overall, while both devices are very similar in terms of connectivity and features, the K90 Pro Max edges ahead with faster download speeds and a USB 3.2 port.

Both the Xiaomi Redmi K90 Pro Max and Xiaomi Redmi Turbo 4 Pro are equipped with a video light, which can help improve lighting during video recording or photography in low-light conditions. Neither device features sapphire glass display, curved displays, or e-paper displays, so both phones have a more traditional flat display design without the enhanced durability of sapphire glass or the unique visual characteristics of e-paper screens.

In summary, the two devices are nearly identical in the miscellaneous features category, offering a video light but lacking specialized display technologies like sapphire glass, curved displays, or e-paper.