Redmi K90 Ultra vs Samsung Galaxy A15
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A15 (2024) runs on the MediaTek Helio G99; launch prices were $420 and $200. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 48/100 (a 25-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 554,590); the Samsung Galaxy A15 is noticeably lighter (200g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Samsung Galaxy A15
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 554590
- Better Geekbench Single: 3013 vs 727
- Better Geekbench Multi: 9287 vs 2047
- Bigger battery: 8550 vs 5000 mAh
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 43/100)
- Better camera (37/100 vs 31/100)
- Longer battery life (78/100 vs 66/100)
- Better display (94/100 vs 68/100)
What makes Samsung Galaxy A15 better?
- Lighter: 200g vs 227g
- Cheaper at launch: $200 vs $420
- Better portability (60/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Samsung Galaxy A15, the Redmi K90 Ultra scores 25 points higher (73/100 vs 48/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 43/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 66/100). Value score: Redmi K90 Ultra — 72/100, Samsung Galaxy A15 — 56/100; 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 Redmi K90 Ultra significantly outperforms the Samsung Galaxy A15 (92/100 vs 43/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A15 (94/100 vs 68/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 31/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100). In the "portability" category, the Samsung Galaxy A15 notably outperforms the Redmi K90 Ultra (60/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Samsung Galaxy A15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Helio G99 | |
| AnTuTu | 3233695 | 554590 | |
| Geekbench Single | 3013 | 727 | |
| Geekbench Multi | 9287 | 2047 | |
| Display | 6.8" AMOLED | 6.5" AMOLED | |
| Resolution | 1280x2772 | — | |
| Refresh rate | 165 Hz | 90 Hz | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 13 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB / 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | — | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | — | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | — | |
| Weight | 227 g | 200 g | |
| Launch price | $420 | $200 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy A15
- Main: 50MP
- Front: 13MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy A15
- 6.5" AMOLED
- Refresh rate: 90 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A15
- 5000 mAh
- Wireless charging: no data
Overall performance score
We compared Redmi K90 Ultra and Samsung Galaxy A15, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy A15 by 483.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $220. Samsung Galaxy A15 was $220 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A15 (92/100 vs 43/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A15 (94/100 vs 68/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 31/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100).
portability
In the "portability" category, the Samsung Galaxy A15 notably outperforms the Redmi K90 Ultra (60/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Samsung Galaxy A15?
The Redmi K90 Ultra significantly outperforms the Samsung Galaxy A15 by 25 points (73/100 vs 48/100).
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy A15?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy A15 — 48/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy A15?
The Redmi K90 Ultra leads on camera score (37/100 vs 31/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy A15?
The Redmi K90 Ultra leads on performance (92/100 vs 43/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy A15?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.