Redmi K90 Ultra vs Samsung Galaxy S23 Ultra
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S23 Ultra (2023) runs on the Qualcomm Snapdragon 8 Gen 2; launch prices were $420 and $1199. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 70/100 (a 3-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 50 MP vs 200 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,681,378).
Redmi K90 Ultra
Samsung Galaxy S23 Ultra
- Higher AnTuTu: 3119308 vs 1681378
- Better Geekbench Single: 3041 vs 2004
- Better Geekbench Multi: 9494 vs 5311
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 227g vs 234g
- Cheaper at launch: $420 vs $1199
- Higher performance (92/100 vs 75/100)
- Longer battery life (78/100 vs 56/100)
- Better display (94/100 vs 88/100)
- Better portability (40/100 vs 29/100)
- Better main camera: 200MP vs 50MP
- Better camera (73/100 vs 37/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy S23 Ultra, the Redmi K90 Ultra scores 3 points higher (73/100 vs 70/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 75/100). In the "camera" category, the Samsung Galaxy S23 Ultra leads (73/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 56/100). Value score: Redmi K90 Ultra — 82/100, Samsung Galaxy S23 Ultra — 50/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy S23 Ultra (92/100 vs 75/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 88/100). In the "camera" category, the Samsung Galaxy S23 Ultra significantly outperforms the Redmi K90 Ultra (73/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy S23 Ultra (78/100 vs 56/100). In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 29/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy S23 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Gen 2 | |
| AnTuTu | 3119308 | 1681378 | |
| Geekbench Single | 3041 | 2004 | |
| Geekbench Multi | 9494 | 5311 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1280x2772 | 1440x3088 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | 45W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 140 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 0 MP | 10 MP | |
| Front camera | 20 MP | 12 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 13, up to 4 major Android upgrades, One UI 8 | |
| Brightness (peak) | 3500 nits | 1750 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 163.4×78.1×8.9 mm | |
| Weight | 227 g | 234 g | |
| Launch price | $420 | $1199 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy S23 Ultra
- Main: 200MP
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 12MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy S23 Ultra
- 6.8" AMOLED
- Resolution: 1440x3088
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy S23 Ultra
- 5000 mAh
- Wired: 45W
- Wireless: 15W
We compared Redmi K90 Ultra and Samsung Galaxy S23 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy S23 Ultra by 85.5% in our overall performance rating.
Launch price difference: $779. Redmi K90 Ultra was $779 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy S23 Ultra (92/100 vs 75/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 88/100).
camera
In the "camera" category, the Samsung Galaxy S23 Ultra significantly outperforms the Redmi K90 Ultra (73/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy S23 Ultra (78/100 vs 56/100).
portability
In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 29/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy S23 Ultra?
The Redmi K90 Ultra edges out the Samsung Galaxy S23 Ultra by just 3 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy S23 Ultra?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy S23 Ultra — 70/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy S23 Ultra?
The Samsung Galaxy S23 Ultra leads on camera score (73/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy S23 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 75/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy S23 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy S23 Ultra is a better fit for active users.