Redmi K90 Max vs Vivo X300 Ultra
The Redmi K90 Max (2026) runs on the MediaTek Dimensity 9500, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $504 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 75/100 (a 16-point difference). Key differences: the Redmi K90 Max has the bigger battery (8550 mAh vs 7000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 3,760,662).
Profile comparison
Category scores
Redmi K90 Max
Vivo X300 Ultra
What makes Redmi K90 Max better?
- Bigger battery: 8550 vs 7000 mAh
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 227g vs 230g
- Cheaper at launch: $504 vs $950
- Better display (94/100 vs 89/100)
- Better portability (41/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 3760662
- Better Geekbench Single: 3639 vs 3293
- Better Geekbench Multi: 11047 vs 10243
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 96/100)
- Better camera (96/100 vs 37/100)
- Longer battery life (85/100 vs 78/100)
Comparison verdict
Comparing the Redmi K90 Max vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 16 points higher (91/100 vs 75/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 37/100). Value score: Redmi K90 Max — 72/100, 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 and the Redmi K90 Max are nearly equal (99/100 vs 96/100). In the "display" category, the Redmi K90 Max is a bit better (94/100 vs 89/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Redmi K90 Max (96/100 vs 37/100). In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 78/100). In the "portability" category, the Redmi K90 Max and the Vivo X300 Ultra are nearly equal (41/100 vs 39/100).
Specs comparison
| Specification | Redmi K90 Max | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3760662 | 4247433 | |
| Geekbench Single | 3293 | 3639 | |
| Geekbench Multi | 10243 | 11047 | |
| Display | 6.8" AMOLED | 6.8" LTPO OLED | |
| Resolution | 2772x1280 | 3168x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 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 | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP66 | IP69 | |
| Dimensions | 162.9×77.9×8.1 mm | 163.0×76.8×8.2 mm | |
| Weight | 227 g | 230 g | |
| Launch price | $504 | $950 |
Camera comparison
Redmi K90 Max
- Main: 50MP f/1.68
- Ultrawide: 8MP
- Front: 20MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Redmi K90 Max
- 6.8" AMOLED
- Resolution: 2772x1280
- Refresh rate: 165 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Max
- 8550 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 Redmi K90 Max and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Redmi K90 Max by 11.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $446. Redmi K90 Max was $446 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra and the Redmi K90 Max are nearly equal (99/100 vs 96/100).
display
In the "display" category, the Redmi K90 Max is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Redmi K90 Max (96/100 vs 37/100).
battery
In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 78/100).
portability
In the "portability" category, the Redmi K90 Max and the Vivo X300 Ultra are nearly equal (41/100 vs 39/100).
Frequently asked questions
Which is better: the Redmi K90 Max or the Vivo X300 Ultra?
The Vivo X300 Ultra is noticeably better than the Redmi K90 Max — the overall rating gap is 16 points.
What is the rating of the Redmi K90 Max and the Vivo X300 Ultra?
The Redmi K90 Max has a MobileRank rating of 75/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Redmi K90 Max or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 37/100).
Should you choose the Redmi K90 Max over the Vivo X300 Ultra?
The Redmi K90 Max 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.