Oppo Find X8s+ and Xiaomi 15 are two of the most compelling flagship contenders in the sub-$800 range, targeting users who want premium performance without breaking into ultra-premium pricing. With both phones boasting cutting-edge hardware, refined designs, and strong camera setups, choosing between them isn’t easy. This comparison is important because it highlights the key strengths and trade-offs between two very different approaches to flagship smartphones, battery endurance and rugged design versus cutting-edge performance and display technology.

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1. Design and Display

Oppo Find X8s+
Oppo Find X8s+

Build and Feel:
Oppo Find X8s+ offers a robust aluminum frame sandwiched between glass panels, paired with IP68/IP69 certification for superior dust and water resistance, including high-pressure water jets. Xiaomi 15 also features an aluminum alloy frame with Xiaomi Shield Glass and IP68 certification. However, Oppo takes the edge with IP69, making it more resilient under harsher conditions. The Xiaomi’s slimmer form factor feels more compact, but the Oppo’s build adds a more premium and rugged touch for users prioritizing durability.

Display Quality:
Oppo Find X8s+ features a 6.59-inch AMOLED panel with 1B colors, Dolby Vision, and HDR10+ at 1600 nits peak brightness. The Xiaomi 15’s 6.36-inch LTPO AMOLED may be smaller, but it impresses with 68B colors and a peak brightness of 3200 nits. Both support Dolby Vision and HDR10+, but Xiaomi’s LTPO technology offers better adaptive refresh control and higher brightness for outdoor use. The Oppo has a slightly higher resolution, but Xiaomi’s superior brightness and color depth offer a more immersive viewing experience.

Verdict:
Xiaomi 15 delivers a more vivid and refined display experience due to its LTPO panel, higher brightness, and broader color range. However, Oppo counters with a sturdier and more rugged body, offering better overall protection.

2. Specifications 

Xiaomi 15

Performance:
Oppo Find X8s+ runs on the MediaTek Dimensity 9400+, featuring a powerful Cortex-X925 prime core and Immortalis-G925 GPU. Xiaomi 15 uses the Snapdragon 8 Gen 4 (Elite), equipped with custom Oryon V2 cores and Adreno 830 GPU. Both chips are built on 3nm architecture and provide top-tier performance. Xiaomi’s CPU offers higher clock speeds and better efficiency, especially in sustained tasks, while also providing broader support for gaming and AI workloads. Xiaomi also benefits from faster USB 3.2 support, enhancing data transfer and display capabilities.

Battery and Charging:
Oppo Find X8s+ leads with a massive 6000 mAh battery, significantly larger than the Xiaomi 15’s 5240–5400 mAh unit. While Xiaomi has a slight edge in wired charging speed at 90W, Oppo is not far behind at 80W. Both support 50W wireless and 10W reverse wireless charging. Oppo’s battery size gives it a clear advantage in longevity, especially under heavy use or travel conditions where extended uptime is vital.

Verdict:
Xiaomi wins in raw processing power and connectivity, offering superior efficiency and faster I/O features. However, Oppo’s larger battery and competitive charging setup make it more reliable for users who prioritize endurance over peak performance.

3. Camera

Xiaomi 15

Main and Secondary Lenses:
Both phones feature triple 50 MP cameras, but tuning and sensor differences matter. Xiaomi includes a larger 1/1.31″ main sensor with Leica optics, offering better low-light performance and detail retention. Its telephoto lens provides 2.6x optical zoom with decent reach, while the ultrawide captures a 115° field of view. Oppo uses a smaller main sensor but compensates with Hasselblad calibration and a 3x periscope zoom, giving it an edge in optical range. Oppo’s ultrawide has a slightly wider angle at 120°, but the smaller sensor impacts dynamic range.

Selfie Camera:
Both phones use a 32 MP front camera with autofocus, but Xiaomi’s lens has a larger aperture (f/2.0) and supports HDR10+ video, giving it better performance in dynamic lighting. Oppo offers slightly more versatility in a selfie video with support for 4K60fps, while Xiaomi focuses more on HDR output. Both are capable, but Xiaomi may deliver more accurate skin tones and highlights, especially under backlit conditions.

Verdict:
Xiaomi 15 delivers more consistent quality across all lenses, especially with its Leica optics and larger main sensor. Oppo’s 3x telephoto offers better reach, but Xiaomi’s overall camera tuning and video capabilities make it more versatile for daily and professional use.

4. Pricing

Oppo Find X8s+
Oppo Find X8s+

Both the Oppo Find X8s+ and Xiaomi 15 are priced around $750, offering flagship-grade features at a relatively competitive rate. For the same price, Xiaomi gives users a stronger processor, better display brightness, and Leica-enhanced cameras, while Oppo focuses on larger battery capacity and rugged build quality. 

Verdict:
At this price point, Xiaomi offers a slightly more balanced flagship experience with fewer compromises in day-to-day usage scenarios.

Disclaimer:
Prices are approximate and may vary based on country, region, and applicable taxes.

5. Conclusion 

Xiaomi 15

Xiaomi 15 distinguishes itself with Leica optics, LTPO 120Hz 68B-color display, Snapdragon 8 Gen 4 chipset, and USB 3.2 Gen2 with DisplayPort, appealing to users who want a flagship packed with premium features across the board. Oppo Find X8s+ counters with IP69 ruggedness, a 6000 mAh battery, 3x periscope zoom, and Hasselblad color tuning, making it ideal for users needing battery endurance and superior telephoto capabilities. 

Verdict:
Overall, Xiaomi provides a more polished and all-around experience, while Oppo shines in niche areas like battery life and ruggedness.

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