Oppo Find X9 Pro VS Xiaomi Redmi K90 Pro Max

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max feature waterproofing, with a waterproof depth rating of 1.5 m, so they offer similar water resistance. However, the Oppo device has an IP69 rating, while the Xiaomi device has a slightly lower IP68 rating. The IP69 rating suggests better resistance to high-pressure water jets, compared to the IP68 rating of the Xiaomi device.

In terms of size, the Xiaomi Redmi K90 Pro Max is slightly lighter, weighing 218 g compared to the Oppo Find X9 Pro’s 224 g. The Xiaomi device is also a bit thinner at 7.9 mm, while the Oppo model is 8.3 mm thick. The Xiaomi device is marginally taller as well, standing at 163.3 mm compared to the Oppo’s 161.3 mm. Both phones have similar widths, with the Xiaomi being 77.8 mm and the Oppo at 76.5 mm.

The volume of the two phones is fairly close, with the Oppo Find X9 Pro having a volume of 102.42 cm³ and the Xiaomi Redmi K90 Pro Max at 100.37 cm³. The differences in these dimensions and weight are minor but still noticeable in their overall build.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max feature OLED/AMOLED displays, providing vibrant colors and deep blacks. The Oppo model has a 6.78″ screen, slightly smaller than the 6.9″ screen of the Xiaomi device. The Oppo has a pixel density of 450 ppi, which is higher than the Xiaomi’s 416 ppi, meaning the Oppo’s display may have slightly sharper text and images.

When it comes to resolution, the Oppo Find X9 Pro has a higher resolution of 1272 x 2772 px, compared to the Xiaomi's 1200 x 2608 px. This gives the Oppo a slight advantage in terms of overall detail. Both devices support a 120Hz refresh rate, ensuring smooth visuals, but the Xiaomi has a faster touch sampling rate of 480Hz, compared to the Oppo’s 240Hz, potentially offering more responsive touch input.

Both phones come with branded damage-resistant glass and offer the same HDR10, HDR10+, Always-On Display, and Dolby Vision support. Neither has a secondary screen, and both are touchscreens. These common features indicate that both displays offer high-end, premium capabilities in terms of protection, color accuracy, and interactive features.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max come with 1024GB of internal storage and 16GB of RAM, providing ample space and memory for performance. They are powered by different chipsets: the Oppo features the MediaTek Dimensity 9500, while the Xiaomi uses the Qualcomm Snapdragon 8 Elite Gen 5. In terms of raw power, the Xiaomi device has a higher AnTuTu benchmark score of 4,350,000, compared to the Oppo's 3,649,108, indicating a potential edge in overall processing power.

The CPU configurations also differ, with the Oppo having a tri-cluster arrangement of 1 x 4.21 GHz, 3 x 3.5 GHz, and 4 x 2.7 GHz cores, while the Xiaomi device offers a different balance with 2 x 4.6 GHz and 6 x 3.62 GHz cores. This results in higher clock speeds on the Xiaomi device, although both phones support 8 threads and utilize big.LITTLE technology for energy efficiency. The Oppo has a GPU clock speed of 1750 MHz with a Mali G1 Ultra MP12, while the Xiaomi’s Adreno 830 GPU operates at a lower 1200 MHz clock speed, with more shading units (1536 vs. Oppo's 128).

Both phones share similar memory specifications, including 5333 MHz RAM speed, 3 nm semiconductor size, and DDR5 memory. However, the Xiaomi device has slightly lower maximum memory bandwidth (85.1 GB/s) compared to the Oppo’s 85.3 GB/s, and its L3 cache is 8 MB, while the Oppo has a larger 16 MB L3 cache. The Geekbench 6 results show the Oppo achieving 12,189 in the multi-core test and 3,781 in the single-core test, whereas the Xiaomi scores 10,059 multi-core and 3,234 single-core.

The Oppo Find X9 Pro features a triple main camera setup with 200 MP, 50 MP, and 50 MP lenses, while the Xiaomi Redmi K90 Pro Max has three 50 MP lenses for its main camera. The wide apertures also differ, with the Oppo offering 2.1 f, 1.5 f, and 2 f apertures, compared to the Xiaomi's 1.7 f, 2.4 f, and 3 f. Both phones include optical image stabilization (OIS) for smoother photos and videos, and support features like phase-detection autofocus and continuous autofocus during video recording. The Oppo supports 3x optical zoom, while the Xiaomi supports 5x optical zoom.

For front cameras, the Oppo Find X9 Pro has a 50 MP front camera with a 2 f aperture, while the Xiaomi Redmi K90 Pro Max has a 32 MP front camera with a slightly wider 2.2 f aperture. Both phones support HDR and shoot raw images, but the Oppo has a broader range of manual controls, including manual shutter speed, manual focus, and manual white balance for both front and main cameras. The Xiaomi lacks a manual shutter speed option, but it does allow creating panoramas in-camera.

In terms of video capabilities, the Oppo offers 2160p at 60 fps, whereas the Xiaomi records at a higher resolution of 4320p at 30 fps. The Oppo supports Dolby Vision recording, while the Xiaomi does not. Both phones support slow-motion video and timelapse functions, but the Oppo also supports HDR10 recording, while the Xiaomi does not. Neither phone has a front-facing LED flash, dual-lens front camera, or 3D photo/video recording capabilities.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max run on Android 16 and share many similar features. They both include clipboard warnings, location privacy options, camera/microphone privacy options, theme customization, and the ability to block app tracking. Neither device supports Mail Privacy Protection, but both offer a variety of privacy-focused features such as notification permissions, media picker, and on-device machine learning.

In terms of additional functionality, both phones can play games while they download, support dark mode, have a battery health check feature, and offer an extra dim mode. They also support dynamic theming, offloading apps, customizable notifications, and full-page screenshots. Both phones support split-screen multitasking, PiP (Picture-in-Picture) mode, and widgets. Neither device can be used as a PC, and neither includes a Quick Start feature.

The Oppo and Xiaomi phones are both free and open source, support offline voice recognition, and have voice command capabilities. They track the current position of the device and support multi-user systems. Additionally, both devices feature a child lock, sharing intents, and have Live Text functionality. The values across both devices are identical in this group, providing a consistent user experience in terms of OS features and privacy controls.

The Oppo Find X9 Pro has a 7500 mAh battery, while the Xiaomi Redmi K90 Pro Max features a slightly larger 7560 mAh battery. Both phones support wireless charging at a speed of 50W and fast charging, but the Oppo supports a charging speed of 80W, while the Xiaomi supports 100W charging, which may result in faster wired charging for the Xiaomi device.

Both phones also support reverse wireless charging, with the Oppo providing a reverse charging speed of 10W, while the Xiaomi offers a faster 22.5W reverse wireless charging speed. Neither device has a removable battery, but both have a battery level indicator and are equipped with rechargeable batteries.

In summary, while the Oppo and Xiaomi devices have very similar battery capacities and wireless charging speeds, the Xiaomi offers a faster charging speed and reverse wireless charging capability compared to the Oppo.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max lack a 3.5 mm audio jack, meaning neither phone supports wired audio through this traditional connection. Both phones are equipped with stereo speakers, providing enhanced audio quality for media playback.

In terms of audio technologies, the Oppo Find X9 Pro supports aptX, LDAC, and aptX HD, enabling high-quality wireless audio streaming. However, the Xiaomi Redmi K90 Pro Max does not support any of these technologies, including aptX and LDAC.

Neither device includes a radio, and both lack the advanced aptX Adaptive and aptX Lossless features, which are not available on either phone in this comparison.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max support 5G connectivity and feature dual SIM card slots. They both offer a wide range of Wi-Fi support, including Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), and the newer Wi-Fi 7 (802.11be). The Oppo has Bluetooth version 6, while the Xiaomi has Bluetooth version 5.4, showing a slight difference in Bluetooth technology. Additionally, the Oppo offers a faster download speed of 10,700 MBits/s, compared to the Xiaomi's 10,000 MBits/s.

Both devices come with USB Type-C, NFC, and fingerprint scanners, ensuring compatibility with modern accessories and quick authentication. The Oppo supports emergency SOS via satellite, whereas the Xiaomi does not include this feature. Both phones have GPS, a compass, infrared sensors, accelerometers, and cellular modules. They also support Galileo, ensuring accurate location tracking.

Other features are mostly similar between the two devices. Neither has a barometer, HDMI output, or 3D facial recognition. Both phones lack a stylus and a built-in projector. They also do not support motion or optical tracking. In terms of connectivity and features, both devices offer comparable sets of options, with the main differences being the faster download speed on the Oppo and the absence of emergency SOS via satellite on the Xiaomi.

Both the Oppo Find X9 Pro and Xiaomi Redmi K90 Pro Max come with a video light, which can enhance video recording in low-light conditions. Neither phone features sapphire glass displays, curved displays, or e-paper displays, as all three of these features are absent in both devices.

In summary, the two devices are identical in this group, with both offering the same set of miscellaneous features.

There are no distinguishing factors between the Oppo and Xiaomi when it comes to these specific aspects of design and functionality.