Redmi K90 vs Vivo iQOO 15
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $401 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 88/100 vs 76/100 (a 12-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 7000); the Vivo iQOO 15 is faster in AnTuTu (3,950,082 vs 3,126,494).
Profile comparison
Category scores
Redmi K90
Vivo iQOO 15
What makes Redmi K90 better?
- Bigger battery: 7100 vs 7000 mAh
- Lighter: 206g vs 215g
- Cheaper at launch: $401 vs $599
- Better portability (55/100 vs 48/100)
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3950082 vs 3126494
- Better Geekbench Single: 3639 vs 3013
- Better Geekbench Multi: 11047 vs 9287
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (98/100 vs 91/100)
- Better camera (78/100 vs 58/100)
- Longer battery life (85/100 vs 72/100)
- Better display (99/100 vs 82/100)
Comparison verdict
Comparing the Redmi K90 vs the Vivo iQOO 15, the Vivo iQOO 15 scores 12 points higher (88/100 vs 76/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 72/100). Value score: Redmi K90 — 80/100, Vivo iQOO 15 — 90/100; 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 is a bit better (98/100 vs 91/100). In the "display" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (99/100 vs 82/100). In the "camera" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 is a bit better (85/100 vs 72/100). In the "portability" category, the Redmi K90 is a bit better (55/100 vs 48/100).
Specs comparison
| Specification | Redmi K90 | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3126494 | 3950082 | |
| Geekbench Single | 3013 | 3639 | |
| Geekbench Multi | 9287 | 11047 | |
| Display | 6.6" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2510x1156 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 7100 mAh | 7000 mAh | |
| Charging | 100W | 100W | |
| Wireless charging | 0W | 40W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 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 | IP68 | |
| Dimensions | 157.5×75.3×8.0 mm | 163.7×76.8×8.1 mm | |
| Weight | 206 g | 215 g | |
| Launch price | $401 | $599 |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Redmi K90
- 7100 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
Overall performance score
We compared Redmi K90 and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Redmi K90 by 20.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $198. Redmi K90 was $198 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 is a bit better (98/100 vs 91/100).
display
In the "display" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (99/100 vs 82/100).
camera
In the "camera" category, the Vivo iQOO 15 notably outperforms the Redmi K90 (78/100 vs 58/100).
battery
In the "battery" category, the Vivo iQOO 15 is a bit better (85/100 vs 72/100).
portability
In the "portability" category, the Redmi K90 is a bit better (55/100 vs 48/100).
Frequently asked questions
Which is better: the Redmi K90 or the Vivo iQOO 15?
The Vivo iQOO 15 is noticeably better than the Redmi K90 — the overall rating gap is 12 points.
What is the rating of the Redmi K90 and the Vivo iQOO 15?
The Redmi K90 has a MobileRank rating of 76/100, the Vivo iQOO 15 — 88/100.
Which has the better camera: the Redmi K90 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 58/100).
Which is more powerful: the Redmi K90 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (98/100 vs 91/100).
Should you choose the Redmi K90 over the Vivo iQOO 15?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.