Redmi K90 Max vs Vivo iQOO 15 Ultra
The Redmi K90 Max (2026) runs on the MediaTek Dimensity 9500, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $504 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 75/100 (a 14-point difference). Key differences: the Redmi K90 Max has the bigger battery (8550 mAh vs 7400); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 3,760,662).
Profile comparison
Category scores
Redmi K90 Max
Vivo iQOO 15 Ultra
What makes Redmi K90 Max better?
- Bigger battery: 8550 vs 7400 mAh
- Higher refresh rate: 165Hz vs 144Hz
- Cheaper at launch: $504 vs $799
- Better portability (41/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 3760662
- Better Geekbench Single: 3639 vs 3293
- Better Geekbench Multi: 11047 vs 10243
- Faster charging: 120W vs 100W
- Higher performance (99/100 vs 96/100)
- Better camera (78/100 vs 37/100)
- Longer battery life (92/100 vs 78/100)
- Better display (99/100 vs 94/100)
Comparison verdict
Comparing the Redmi K90 Max vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 14 points higher (89/100 vs 75/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 37/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 78/100). Value score: Redmi K90 Max — 72/100, Vivo iQOO 15 Ultra — 92/100; 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 iQOO 15 Ultra and the Redmi K90 Max are nearly equal (99/100 vs 96/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Max (78/100 vs 37/100). In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 78/100). In the "portability" category, the Redmi K90 Max is a bit better (41/100 vs 35/100).
Specs comparison
| Specification | Redmi K90 Max | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3760662 | 4602290 | |
| Geekbench Single | 3293 | 3639 | |
| Geekbench Multi | 10243 | 11047 | |
| Display | 6.8" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2772x1280 | 1440x3168 | |
| Refresh rate | 165 Hz | 144 Hz | |
| Battery | 8550 mAh | 7400 mAh | |
| Charging | 100W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB / 24GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 8000 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.9×77.9×8.1 mm | 163.7×76.8×8.7 mm | |
| Weight | 227 g | 227 g | |
| Launch price | $504 | $799 |
Camera comparison
Redmi K90 Max
- Main: 50MP f/1.68
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K90 Max
- 6.8" AMOLED
- Resolution: 2772x1280
- Refresh rate: 165 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Redmi K90 Max
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Redmi K90 Max and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Redmi K90 Max by 18.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $295. Redmi K90 Max was $295 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra and the Redmi K90 Max are nearly equal (99/100 vs 96/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Max (78/100 vs 37/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 78/100).
portability
In the "portability" category, the Redmi K90 Max is a bit better (41/100 vs 35/100).
Frequently asked questions
Which is better: the Redmi K90 Max or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is noticeably better than the Redmi K90 Max — the overall rating gap is 14 points.
What is the rating of the Redmi K90 Max and the Vivo iQOO 15 Ultra?
The Redmi K90 Max has a MobileRank rating of 75/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Redmi K90 Max or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 37/100).
Should you choose the Redmi K90 Max over the Vivo iQOO 15 Ultra?
The Redmi K90 Max is a better fit for gamers and power users, those who care about battery life. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.