vivo X300 Ultra vs Xiaomi 17 Ultra: Comparison

In the ever-evolving world of smartphones, two recent releases have caught the attention of tech enthusiasts and smartphone lovers alike. The vivo X300 Ultra and the Xiaomi 17 Ultra, both high-end devices, offer cutting-edge features and impressive specifications that make them stand out in the crowded smartphone market.

Let's start by taking a closer look at the vivo X300 Ultra. This powerhouse of a phone from the popular Chinese brand vivo was released in March 2026 to much fanfare. With its sleek design and premium materials, the X300 Ultra is sure to turn heads. The phone boasts a stunning 6.83-inch AMOLED screen with a resolution of 1440x3168 (WQHD+), a refresh rate of 144 Hz, and a maximum brightness of 1800 cd/m². The display also features a contrast ratio of 8000000:1 and supports HDR10+ for vibrant and lifelike colors.

In terms of audio, the vivo X300 Ultra comes equipped with stereo speakers, Hi-Res Audio, and Dolby Atmos for an immersive sound experience. The phone is crafted from a combination of glass and titanium-aluminium alloy, giving it a premium look and feel. With a usable surface of 90.1%, the X300 Ultra offers a spacious and comfortable user experience. Additionally, the phone is available in a striking green version that weighs 240.13g and has a thickness of 8.87mm.

Under the hood, the vivo X300 Ultra is powered by the Qualcomm Snapdragon 8 Elite Gen 5 processor, built on the 3nm process for blazing-fast performance. The phone comes with either 12GB or 16GB of RAM (LPDDR5X or LPDDR5X Ultra Pro Quad Channel) and storage options ranging from 256GB to 1TB (UFS Storage 4.1). In terms of performance, the X300 Ultra scores an impressive 4010000 on the AnTuTu benchmark test. The phone also features a fingerprint display for secure unlocking and a robust cooling system to prevent overheating during intensive use.

Moving on to the camera capabilities, the vivo X300 Ultra sports a quadruple-camera setup that includes a 200.0Mpx standard camera with optical stabilization, a 50.0Mpx wide-angle + macro lens, a 200.0Mpx telephoto lens, and a 5.0Mpx multispectral sensor. The phone also boasts a 50.0Mpx selfie camera with impressive features such as 4K and 8K video recording, optical zoom up to 3.7x, and Zeiss + T* coating for stunning image quality. The X300 Ultra also incorporates advanced technologies like Macro mode up to 1.5cm, mechanical zoom module with continuous optical zoom, Blueprint Imaging Chip V3+, and 4K 120fps Dolby Vision HDR video recording.

In terms of connectivity, the vivo X300 Ultra offers Bluetooth 6.0, dual SIM support, NFC, WiFi 6 (802.11ax), GPS (L1+L5), Infrared, and eSIM for seamless connectivity options. The phone is powered by a massive 6600mAh battery with support for 100.0W fast charging, wireless charging, and reverse charging for added convenience.

Now, let's shift our focus to the Xiaomi 17 Ultra, another high-end offering from the well-known Chinese brand Xiaomi. Released in December 2025, the Xiaomi 17 Ultra packs a punch with its impressive features and top-notch specifications. The phone sports a 6.90-inch AMOLED screen with a resolution of 1200x2608 (QHD) and a peak brightness of 3500 cd/m², making it ideal for viewing content in any lighting conditions. The display also supports HDR10+ for enhanced color accuracy and contrast.

In the audio department, the Xiaomi 17 Ultra comes equipped with stereo speakers, Hi-Res Audio, and Dolby Atmos for a rich and immersive sound experience. The phone is constructed from a combination of aluminium alloy and titanium, giving it a sleek and premium look. With a usable surface of 91.7%, the Xiaomi 17 Ultra offers a comfortable and ergonomic grip for extended use. Additionally, the phone is available in a stylish green version with a weight of 219g.

Under the hood, the Xiaomi 17 Ultra is powered by the Qualcomm Snapdragon 8 Elite Gen 5 processor, built on the 3nm process for exceptional performance. The phone comes with either 12GB or 16GB of RAM (LPDDR5) and storage options ranging from 256GB to 1TB (UFS Storage 4.1). The Xiaomi 17 Ultra achieves an impressive score of 4027702 on the AnTuTu benchmark test, showcasing its superior performance capabilities. The phone also features a fingerprint display for secure unlocking and a robust cooling system to keep temperatures in check during intensive tasks.

When it comes to photography, the Xiaomi 17 Ultra features a triple-camera setup that includes a 50.0Mpx standard camera with optical stabilization, a 50.0Mpx wide-angle + macro lens, and a 200.0Mpx telephoto lens. The phone also boasts a 50.0Mpx selfie camera with features like 4K and 8K video recording, telephoto with OIS for 3.2x–4.3x optical zoom, and a macro mode for close-up shots. The Xiaomi 17 Ultra also offers an ultra-wide-angle lens with a 115º field of view for capturing expansive landscapes and group shots.

In terms of connectivity, the Xiaomi 17 Ultra offers Bluetooth 6.0, dual SIM support, NFC, WiFi 6 (802.11ax), GPS (L1+L5), Infrared, and eSIM for seamless connectivity options. The phone is powered by a 6000mAh battery with support for 90.0W fast charging, wireless charging, and reverse charging for added convenience.

In conclusion, both the vivo X300 Ultra and the Xiaomi 17 Ultra are top-of-the-line smartphones that offer a host of high-end features and cutting-edge technology. Whether you're a photography enthusiast, a gaming aficionado, or a multimedia junkie, these phones have something to offer for everyone. With their premium design, powerful hardware, impressive camera capabilities, and advanced connectivity options, the vivo X300 Ultra and the Xiaomi 17 Ultra are sure to satisfy even the most discerning smartphone users.