OPPO K15 Pro vs Vivo X300 Ultra
The OPPO K15 Pro (2026) runs on the MediaTek Dimensity 8500, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $436 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 67/100 (a 24-point difference). Key differences: the OPPO K15 Pro has the bigger battery (7500 mAh vs 7000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 2,254,164); the OPPO K15 Pro is noticeably lighter (200g vs 230g).
OPPO K15 Pro
Vivo X300 Ultra
- Bigger battery: 7500 vs 7000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 200g vs 230g
- Cheaper at launch: $436 vs $950
- Better display (94/100 vs 89/100)
- Better portability (56/100 vs 39/100)
- Higher AnTuTu: 4247433 vs 2254164
- Better Geekbench Single: 3640 vs 1553
- Better Geekbench Multi: 11033 vs 6403
- Faster charging: 100W vs 80W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 78/100)
- Better camera (96/100 vs 35/100)
- Longer battery life (85/100 vs 69/100)
Comparing the OPPO K15 Pro vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 24 points higher (91/100 vs 67/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 78/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 35/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 69/100). Value score: OPPO K15 Pro — 68/100, Vivo X300 Ultra — 94/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Vivo X300 Ultra notably outperforms the OPPO K15 Pro (99/100 vs 78/100). In the "display" category, the OPPO K15 Pro is a bit better (94/100 vs 89/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the OPPO K15 Pro (96/100 vs 35/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the OPPO K15 Pro (85/100 vs 69/100). In the "portability" category, the OPPO K15 Pro notably outperforms the Vivo X300 Ultra (56/100 vs 39/100).
| Specification | OPPO K15 Pro | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 8500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 2254164 | 4247433 | |
| Geekbench Single | 1553 | 3640 | |
| Geekbench Multi | 6403 | 11033 | |
| Display | 6.6" AMOLED | 6.8" LTPO OLED | |
| Resolution | 2760x1256 | 3168x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7500 mAh | 7000 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | 162.4×77.5×8.3 mm | 163.0×76.8×8.2 mm | |
| Weight | 200 g | 230 g | |
| Launch price | $436 | $950 |
OPPO K15 Pro
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
OPPO K15 Pro
- 6.6" AMOLED
- Resolution: 2760x1256
- Refresh rate: 144 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
OPPO K15 Pro
- 7500 mAh
- Wired: 80W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
We compared OPPO K15 Pro and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads OPPO K15 Pro by 46.9% in our overall performance rating.
Launch price difference: $514. OPPO K15 Pro was $514 cheaper at launch.
performance
In the "performance" category, the Vivo X300 Ultra notably outperforms the OPPO K15 Pro (99/100 vs 78/100).
display
In the "display" category, the OPPO K15 Pro is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the OPPO K15 Pro (96/100 vs 35/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the OPPO K15 Pro (85/100 vs 69/100).
portability
In the "portability" category, the OPPO K15 Pro notably outperforms the Vivo X300 Ultra (56/100 vs 39/100).
Which is better: the OPPO K15 Pro or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the OPPO K15 Pro by 24 points (91/100 vs 67/100).
What is the rating of the OPPO K15 Pro and the Vivo X300 Ultra?
The OPPO K15 Pro has a MobileRank rating of 67/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the OPPO K15 Pro or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 35/100).
Which is more powerful: the OPPO K15 Pro or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 78/100).
Should you choose the OPPO K15 Pro over the Vivo X300 Ultra?
The OPPO K15 Pro is a better fit for active users. The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.