Redmi K90 Ultra vs Vivo iQOO 15 Ultra
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; estimated prices are $420 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 84/100 vs 61/100 (a 23-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 7400); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 2,760,000).
Redmi K90 Ultra
Vivo iQOO 15 Ultra
- Bigger battery: 8550 vs 7400 mAh
- Higher refresh rate: 165Hz vs 144Hz
- Cheaper: $420 vs $799
- Better value for money (81/100 vs 55/100)
- Higher AnTuTu: 4602290 vs 2760000
- Better Geekbench Single: 3640 vs 3050
- Better Geekbench Multi: 11033 vs 9300
- Faster charging: 120W vs 100W
- Higher performance (97/100 vs 65/100)
- Better camera (74/100 vs 32/100)
- Longer battery life (86/100 vs 77/100)
Comparing the Redmi K90 Ultra vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 23 points higher (84/100 vs 61/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (97/100 vs 65/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (74/100 vs 32/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 55/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Ultra (97/100 vs 65/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Ultra (74/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (86/100 vs 77/100). In the "design" category, both devices are on the same level — 16/100. In the "value for money" category, the Redmi K90 Ultra notably outperforms the Vivo iQOO 15 Ultra (81/100 vs 55/100).
| Specification | Redmi K90 Ultra | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 2760000 | 4602290 | |
| Geekbench Single | 3050 | 3640 | |
| Geekbench Multi | 9300 | 11033 | |
| Display | 6.8" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1280x2772 | 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 | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 8000 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 163.7×76.8×8.7 mm | |
| Weight | 227 g | 227 g | |
| Price | $420 | $799 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
We compared Redmi K90 Ultra and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Redmi K90 Ultra by 40.0% in our overall performance rating.
Price difference: $379. Redmi K90 Ultra is cheaper by $379.
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Ultra (97/100 vs 65/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Ultra (74/100 vs 32/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (86/100 vs 77/100).
design
In the "design" category, both devices are on the same level — 16/100.
value for money
In the "value for money" category, the Redmi K90 Ultra notably outperforms the Vivo iQOO 15 Ultra (81/100 vs 55/100).
Which is better: the Redmi K90 Ultra or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Redmi K90 Ultra by 23 points (84/100 vs 61/100).
What is the rating of the Redmi K90 Ultra and the Vivo iQOO 15 Ultra?
The Redmi K90 Ultra has a MobileRank rating of 61/100, the Vivo iQOO 15 Ultra — 84/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (74/100 vs 32/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (97/100 vs 65/100).
Should you choose the Redmi K90 Ultra over the Vivo iQOO 15 Ultra?
The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life.