Oppo - Find X8 vs Xiaomi 15

These two are nearly even on the Mars Score (70.9 vs 69.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the Find X8 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are battery capacity, screen size, promised os updates. The single most decisive one: Battery capacity — 4.26% more. 5630 mAh vs 5400 mAh.

Pick the Xiaomi 15 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wired charging, antutu, weight. The single most decisive one: Wired charging — 12.50% more. 90 W vs 80 W.

Both ship with comparable ram, main camera, refresh rate, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.