Redmi K90 Ultra vs Samsung Galaxy S23
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S23 (2023) runs on the Qualcomm Snapdragon 8 Gen 2; launch prices were $420 and $799. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 66/100 (a 7-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 3900); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 1,656,761); the Samsung Galaxy S23 is noticeably lighter (168g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Samsung Galaxy S23
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 1656761
- Better Geekbench Single: 3013 vs 2004
- Better Geekbench Multi: 9287 vs 5311
- Bigger battery: 8550 vs 3900 mAh
- Faster charging: 100W vs 25W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $799
- Higher performance (92/100 vs 75/100)
- Longer battery life (78/100 vs 29/100)
- Better display (94/100 vs 82/100)
What makes Samsung Galaxy S23 better?
- Lighter: 168g vs 227g
- Better camera (67/100 vs 37/100)
- Better portability (83/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Samsung Galaxy S23, the Redmi K90 Ultra scores 7 points higher (73/100 vs 66/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 75/100). In the "camera" category, the Samsung Galaxy S23 leads (67/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 29/100). Value score: Redmi K90 Ultra — 72/100, Samsung Galaxy S23 — 46/100; 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 notably outperforms the Samsung Galaxy S23 (92/100 vs 75/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 82/100). In the "camera" category, the Samsung Galaxy S23 significantly outperforms the Redmi K90 Ultra (67/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S23 (78/100 vs 29/100). In the "portability" category, the Samsung Galaxy S23 significantly outperforms the Redmi K90 Ultra (83/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Samsung Galaxy S23 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Gen 2 | |
| AnTuTu | 3233695 | 1656761 | |
| Geekbench Single | 3013 | 2004 | |
| Geekbench Multi | 9287 | 5311 | |
| Display | 6.8" AMOLED | 6.1" AMOLED | |
| Resolution | 1280x2772 | 2340x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 3900 mAh | |
| Charging | 100W | 25W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 133 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 0 MP | 10 MP | |
| Front camera | 20 MP | 12 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 13 | |
| Brightness (peak) | 3500 nits | 1750 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 157.8×76.2×7.6 mm | |
| Weight | 227 g | 168 g | |
| Launch price | $420 | $799 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy S23
- Main: 50MP f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 12MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy S23
- 6.1" AMOLED
- Resolution: 2340x1080
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy S23
- 3900 mAh
- Wired: 25W
- Wireless: 15W
Overall performance score
We compared Redmi K90 Ultra and Samsung Galaxy S23, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy S23 by 95.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $379. Redmi K90 Ultra was $379 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy S23 (92/100 vs 75/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 82/100).
camera
In the "camera" category, the Samsung Galaxy S23 significantly outperforms the Redmi K90 Ultra (67/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S23 (78/100 vs 29/100).
portability
In the "portability" category, the Samsung Galaxy S23 significantly outperforms the Redmi K90 Ultra (83/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Samsung Galaxy S23?
The Redmi K90 Ultra edges out the Samsung Galaxy S23 by just 7 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy S23?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy S23 — 66/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy S23?
The Samsung Galaxy S23 leads on camera score (67/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy S23?
The Redmi K90 Ultra leads on performance (92/100 vs 75/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy S23?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life. The Samsung Galaxy S23 is a better fit for active users.