Redmi K90 Ultra vs Vivo iQOO 15
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $420 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 77/100 vs 61/100 (a 16-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 7000); the Vivo iQOO 15 is faster in AnTuTu (3,740,528 vs 2,760,000).
Redmi K90 Ultra
Vivo iQOO 15
- Bigger battery: 8550 vs 7000 mAh
- Higher refresh rate: 165Hz vs 144Hz
- Cheaper: $420 vs $599
- Better value for money (81/100 vs 69/100)
- Higher AnTuTu: 3740528 vs 2760000
- Lighter: 215g vs 227g
- Higher performance (78/100 vs 65/100)
- Better camera (74/100 vs 32/100)
- Better design/ergonomics (31/100 vs 16/100)
Comparing the Redmi K90 Ultra vs the Vivo iQOO 15, the Vivo iQOO 15 scores 16 points higher (77/100 vs 61/100). In the "performance" category, the Vivo iQOO 15 leads (78/100 vs 65/100). In the "camera" category, the Vivo iQOO 15 leads (74/100 vs 32/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 69/100). In the "performance" category, the Vivo iQOO 15 is a bit better (78/100 vs 65/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO 15 significantly outperforms the Redmi K90 Ultra (74/100 vs 32/100). In the "battery" category, both devices are on the same level — 77/100. In the "design" category, the Vivo iQOO 15 notably outperforms the Redmi K90 Ultra (31/100 vs 16/100). In the "value for money" category, the Redmi K90 Ultra is a bit better (81/100 vs 69/100).
| Specification | Redmi K90 Ultra | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2760000 | 3740528 | |
| Geekbench Single | 3050 | 3050 | |
| Geekbench Multi | 9300 | 9300 | |
| Display | 6.8" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1280x2772 | 1440x3168 | |
| Refresh rate | 165 Hz | 144 Hz | |
| Battery | 8550 mAh | 7000 mAh | |
| Charging | 100W | 100W | |
| Wireless charging | 0W | 40W | |
| 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 | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 6000 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 163.7×76.8×8.1 mm | |
| Weight | 227 g | 215 g | |
| Price | $420 | $599 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15
- 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
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
We compared Redmi K90 Ultra and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Redmi K90 Ultra by 26.2% in our overall performance rating.
Price difference: $179. Redmi K90 Ultra is cheaper by $179.
performance
In the "performance" category, the Vivo iQOO 15 is a bit better (78/100 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 significantly outperforms the Redmi K90 Ultra (74/100 vs 32/100).
battery
In the "battery" category, both devices are on the same level — 77/100.
design
In the "design" category, the Vivo iQOO 15 notably outperforms the Redmi K90 Ultra (31/100 vs 16/100).
value for money
In the "value for money" category, the Redmi K90 Ultra is a bit better (81/100 vs 69/100).
Which is better: the Redmi K90 Ultra or the Vivo iQOO 15?
The Vivo iQOO 15 is noticeably better than the Redmi K90 Ultra — the overall rating gap is 16 points.
What is the rating of the Redmi K90 Ultra and the Vivo iQOO 15?
The Redmi K90 Ultra has a MobileRank rating of 61/100, the Vivo iQOO 15 — 77/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (74/100 vs 32/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (78/100 vs 65/100).
Should you choose the Redmi K90 Ultra over the Vivo iQOO 15?
The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers. The Vivo iQOO 15 is a better fit for active users, those who care about battery life.