OPPO K15 Pro+ vs Vivo X300 Ultra
The OPPO K15 Pro+ (2026) runs on the MediaTek Dimensity 9500s, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $509 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 72/100 (a 19-point difference). Key differences: the OPPO K15 Pro+ has the bigger battery (8000 mAh vs 7000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 3,032,039).
Profile comparison
Category scores
OPPO K15 Pro+
Vivo X300 Ultra
What makes OPPO K15 Pro+ better?
- Bigger battery: 8000 vs 7000 mAh
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 219g vs 230g
- Cheaper at launch: $509 vs $950
- Better display (94/100 vs 89/100)
- Better portability (44/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 3032039
- Better Geekbench Single: 3639 vs 2725
- Better Geekbench Multi: 11047 vs 8932
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 90/100)
- Better camera (96/100 vs 35/100)
- Longer battery life (85/100 vs 75/100)
Comparison verdict
Comparing the OPPO K15 Pro+ vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 19 points higher (91/100 vs 72/100). 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 75/100). Value score: OPPO K15 Pro+ — 64/100, Vivo X300 Ultra — 94/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo X300 Ultra is a bit better (99/100 vs 90/100). 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 is a bit better (85/100 vs 75/100). In the "portability" category, the OPPO K15 Pro+ is a bit better (44/100 vs 39/100).
Specs comparison
| Specification | OPPO K15 Pro+ | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500s | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3032039 | 4247433 | |
| Geekbench Single | 2725 | 3639 | |
| Geekbench Multi | 8932 | 11047 | |
| Display | 6.8" AMOLED | 6.8" LTPO OLED | |
| Resolution | 2772x1272 | 3168x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8000 mAh | 7000 mAh | |
| Charging | 100W | 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 | 219 g | 230 g | |
| Launch price | $509 | $950 |
Camera comparison
OPPO K15 Pro+
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
OPPO K15 Pro+
- 6.8" AMOLED
- Resolution: 2772x1272
- Refresh rate: 165 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
OPPO K15 Pro+
- 8000 mAh
- Wired: 100W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared OPPO K15 Pro+ and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads OPPO K15 Pro+ by 28.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $441. OPPO K15 Pro+ was $441 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra is a bit better (99/100 vs 90/100).
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 is a bit better (85/100 vs 75/100).
portability
In the "portability" category, the OPPO K15 Pro+ is a bit better (44/100 vs 39/100).
Frequently asked questions
Which is better: the OPPO K15 Pro+ or the Vivo X300 Ultra?
The Vivo X300 Ultra is noticeably better than the OPPO K15 Pro+ — the overall rating gap is 19 points.
What is the rating of the OPPO K15 Pro+ and the Vivo X300 Ultra?
The OPPO K15 Pro+ has a MobileRank rating of 72/100, 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 90/100).
Should you choose the OPPO K15 Pro+ over the Vivo X300 Ultra?
The OPPO K15 Pro+ is a better fit for gamers and power users, those who care about battery life. 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.