Between the Find X8 Pro and Xiaomi 15 Ultra, the Find X8 Pro comes out ahead in weight and screen size, while the Xiaomi 15 Ultra wins on wireless charging and pixel density. Overall, the Find X8 Pro scores 73.6 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.6 vs 73.8). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Find X8 Pro if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, screen size, water resistance, among others.
Pick the Xiaomi 15 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are wireless charging, pixel density, wired charging, among others.
Both ship with comparable ram, main camera, refresh rate, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Oppo - Find X8 Pro wins
- ▲Weight — 14.00 g less. 215 vs 229.
- ▲Screen size — 0.74% more. 6.78 " vs 6.73 ".
- ▲Water resistance: IP69 (vs IP68).
- ▲Promised OS updates: 5 (vs 4).
Why Xiaomi 15 Ultra wins
- ▲Wireless charging — 60.00% more. 80 W vs 50 W.
- ▲Pixel density — 15.49% more. 522 ppi vs 452 ppi.
- ▲Wired charging — 12.50% more. 90 W vs 80 W.
- ▲Battery capacity — 1.52% more. 6000 mAh vs 5910 mAh.
- ▲AnTuTu — 1.49% more. 2720000 vs 2680000.
Spec comparison
Design
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 215 glead | 229 g |
| Thickness | 8.2 mmlead | 9.4 mm |
| Water resistanceⓘ | IP69lead | IP68 |
| Form factor | bar | bar |
Display
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Screen sizeⓘ | 6.78 "lead | 6.73 " |
| Pixel densityⓘ | 452 ppi | 522 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
Cameras
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Battery capacity | 5910 mAh | 6000 mAhlead |
| Wired chargingⓘ | 80 W | 90 Wlead |
| Wireless chargingⓘ | 50 W | 80 Wlead |
Connectivity
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Oppo - Find X8 Pro | Xiaomi 15 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 5 yearslead | 4 years |
Frequently asked
Which has better battery, Find X8 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has 1.5% more battery — 5910 mAh vs 6000 mAh.
Which is lighter, Find X8 Pro or Xiaomi 15 Ultra?+
Find X8 Pro is 14g lighter — 215g vs 229g.
Is Find X8 Pro waterproof?+
Find X8 Pro has an IP69 rating.
Does Xiaomi 15 Ultra support 5G?+
Yes, Xiaomi 15 Ultra supports 5G.
Which has a better camera, Find X8 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.