Redmi K90 Pro Max vs Samsung Galaxy A51
The Redmi K90 Pro Max (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Samsung Galaxy A51 (2020) runs on the Exynos 9611; launch prices were $561 and $399. By overall MobileRank rating, the Redmi K90 Pro Max leads — 86/100 vs 34/100 (a 52-point difference). Key differences: the Redmi K90 Pro Max has the bigger battery (7560 mAh vs 4000); the main camera is 50 MP vs 48 MP; the Redmi K90 Pro Max is faster in AnTuTu (3,622,315 vs 355,351); the Samsung Galaxy A51 is noticeably lighter (172g vs 210g).
Profile comparison
Category scores
Redmi K90 Pro Max
Samsung Galaxy A51
What makes Redmi K90 Pro Max better?
- Higher AnTuTu: 3622315 vs 355351
- Better Geekbench Single: 3639 vs 365
- Better Geekbench Multi: 11047 vs 1107
- Bigger battery: 7560 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (97/100 vs 25/100)
- Better camera (78/100 vs 36/100)
- Longer battery life (89/100 vs 25/100)
- Better display (81/100 vs 51/100)
What makes Samsung Galaxy A51 better?
- Lighter: 172g vs 210g
- Cheaper at launch: $399 vs $561
- Better portability (77/100 vs 54/100)
Comparison verdict
Comparing the Redmi K90 Pro Max vs the Samsung Galaxy A51, the Redmi K90 Pro Max scores 52 points higher (86/100 vs 34/100). In the "performance" category, the Redmi K90 Pro Max leads (97/100 vs 25/100). In the "camera" category, the Redmi K90 Pro Max leads (78/100 vs 36/100). In the "battery" category, the Redmi K90 Pro Max leads (89/100 vs 25/100). Value score: Redmi K90 Pro Max — 90/100, Samsung Galaxy A51 — 0/100; 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 Pro Max significantly outperforms the Samsung Galaxy A51 (97/100 vs 25/100). In the "display" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (81/100 vs 51/100). In the "camera" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (78/100 vs 36/100). In the "battery" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (89/100 vs 25/100). In the "portability" category, the Samsung Galaxy A51 notably outperforms the Redmi K90 Pro Max (77/100 vs 54/100).
Specs comparison
| Specification | Redmi K90 Pro Max | Samsung Galaxy A51 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Exynos 9611 | |
| AnTuTu | 3622315 | 355351 | |
| Geekbench Single | 3639 | 365 | |
| Geekbench Multi | 11047 | 1107 | |
| Display | 6.9" OLED | 6.5" AMOLED | |
| Resolution | 2608x1200 | — | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 7560 mAh | 4000 mAh | |
| Charging | 100W | — | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 16GB | 4GB / 6GB | |
| Storage | 256GB / 512GB / 1TB | 64GB / 128GB | |
| OS | Android 16 | — | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | 163.3×77.8×7.9 mm | 158.5×73.6×7.9 mm | |
| Weight | 210 g | 172 g | |
| Launch price | $561 | $399 |
Camera comparison
Redmi K90 Pro Max
- Main: 50MP f/1.88
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Samsung Galaxy A51
- Main: 48MP
- Front: 32MP
Display comparison
Redmi K90 Pro Max
- 6.9" OLED
- Resolution: 2608x1200
- Refresh rate: 120 Hz
Samsung Galaxy A51
- 6.5" AMOLED
- Refresh rate: 60 Hz
Battery and charging
Redmi K90 Pro Max
- 7560 mAh
- Wired: 100W
- Wireless: 50W
Samsung Galaxy A51
- 4000 mAh
- No wireless charging
Overall performance score
We compared Redmi K90 Pro Max and Samsung Galaxy A51, covering their specs and all relevant benchmarks.
Redmi K90 Pro Max leads Samsung Galaxy A51 by 919.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $162. Samsung Galaxy A51 was $162 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (97/100 vs 25/100).
display
In the "display" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (81/100 vs 51/100).
camera
In the "camera" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (78/100 vs 36/100).
battery
In the "battery" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 (89/100 vs 25/100).
portability
In the "portability" category, the Samsung Galaxy A51 notably outperforms the Redmi K90 Pro Max (77/100 vs 54/100).
Frequently asked questions
Which is better: the Redmi K90 Pro Max or the Samsung Galaxy A51?
The Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A51 by 52 points (86/100 vs 34/100).
What is the rating of the Redmi K90 Pro Max and the Samsung Galaxy A51?
The Redmi K90 Pro Max has a MobileRank rating of 86/100, the Samsung Galaxy A51 — 34/100.
Which has the better camera: the Redmi K90 Pro Max or the Samsung Galaxy A51?
The Redmi K90 Pro Max leads on camera score (78/100 vs 36/100).
Which is more powerful: the Redmi K90 Pro Max or the Samsung Galaxy A51?
The Redmi K90 Pro Max leads on performance (97/100 vs 25/100).
Should you choose the Redmi K90 Pro Max over the Samsung Galaxy A51?
The Redmi K90 Pro Max is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.