Redmi K90 Ultra vs Vivo X300 FE
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo X300 FE (2026) runs on the Snapdragon 8 Elite Gen 5; launch prices were $420 and $699. By overall MobileRank rating, the Vivo X300 FE leads — 81/100 vs 73/100 (a 8-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 2,869,139); the Vivo X300 FE is noticeably lighter (190g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo X300 FE
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 2869139
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $699
- Better display (94/100 vs 85/100)
What makes Vivo X300 FE better?
- Better Geekbench Single: 3639 vs 3013
- Better Geekbench Multi: 11047 vs 9287
- Lighter: 190g vs 227g
- Higher performance (94/100 vs 92/100)
- Better camera (64/100 vs 37/100)
- Longer battery life (81/100 vs 78/100)
- Better portability (65/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo X300 FE, the Vivo X300 FE scores 8 points higher (81/100 vs 73/100). In the "camera" category, the Vivo X300 FE leads (64/100 vs 37/100). Value score: Redmi K90 Ultra — 72/100, Vivo X300 FE — 76/100; 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 FE and the Redmi K90 Ultra are nearly equal (94/100 vs 92/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100). In the "camera" category, the Vivo X300 FE notably outperforms the Redmi K90 Ultra (64/100 vs 37/100). In the "battery" category, the Vivo X300 FE and the Redmi K90 Ultra are nearly equal (81/100 vs 78/100). In the "portability" category, the Vivo X300 FE notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo X300 FE | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3233695 | 2869139 | |
| Geekbench Single | 3013 | 3639 | |
| Geekbench Multi | 9287 | 11047 | |
| Display | 6.8" AMOLED | 6.3" LTPO AMOLED | |
| Resolution | 1280x2772 | 1216x2640 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6500 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 40W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 50 MP | |
| RAM | 12GB / 16GB | 12GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 5000 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 150.8×71.8×8.0 mm | |
| Weight | 227 g | 190 g | |
| Launch price | $420 | $699 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo X300 FE
- Main: 50MP f/1.6
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo X300 FE
- 6.3" LTPO AMOLED
- Resolution: 1216x2640
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo X300 FE
- 6500 mAh
- Wired: 90W
- Wireless: 40W
Overall performance score
We compared Redmi K90 Ultra and Vivo X300 FE, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo X300 FE by 12.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $279. Redmi K90 Ultra was $279 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 FE and the Redmi K90 Ultra are nearly equal (94/100 vs 92/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100).
camera
In the "camera" category, the Vivo X300 FE notably outperforms the Redmi K90 Ultra (64/100 vs 37/100).
battery
In the "battery" category, the Vivo X300 FE and the Redmi K90 Ultra are nearly equal (81/100 vs 78/100).
portability
In the "portability" category, the Vivo X300 FE notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo X300 FE?
The Vivo X300 FE edges out the Redmi K90 Ultra by just 8 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Vivo X300 FE?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo X300 FE — 81/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo X300 FE?
The Vivo X300 FE leads on camera score (64/100 vs 37/100).
Should you choose the Redmi K90 Ultra over the Vivo X300 FE?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo X300 FE is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.