Redmi K100 vs Samsung Galaxy A51
The Redmi K100 (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A51 (2020) runs on the Exynos 9611. By overall MobileRank rating, the Redmi K100 leads — 73/100 vs 34/100 (a 39-point difference). Key differences: the Redmi K100 has the bigger battery (10000 mAh vs 4000); the main camera is 50 MP vs 48 MP; the Redmi K100 is faster in AnTuTu (3,298,726 vs 355,351); the Samsung Galaxy A51 is noticeably lighter (172g vs 234g).
Profile comparison
Category scores
Redmi K100
Samsung Galaxy A51
What makes Redmi K100 better?
- Higher AnTuTu: 3298726 vs 355351
- Better Geekbench Single: 3013 vs 365
- Better Geekbench Multi: 9287 vs 1107
- Bigger battery: 10000 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 25/100)
- Better camera (37/100 vs 36/100)
- Longer battery life (80/100 vs 25/100)
- Better display (94/100 vs 51/100)
What makes Samsung Galaxy A51 better?
- Lighter: 172g vs 234g
- Better portability (77/100 vs 25/100)
Comparison verdict
Comparing the Redmi K100 vs the Samsung Galaxy A51, the Redmi K100 scores 39 points higher (73/100 vs 34/100). In the "performance" category, the Redmi K100 leads (92/100 vs 25/100). In the "battery" category, the Redmi K100 leads (80/100 vs 25/100). In the "performance" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (92/100 vs 25/100). In the "display" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (94/100 vs 51/100). In the "camera" category, the Redmi K100 and the Samsung Galaxy A51 are nearly equal (37/100 vs 36/100). In the "battery" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (80/100 vs 25/100). In the "portability" category, the Samsung Galaxy A51 significantly outperforms the Redmi K100 (77/100 vs 25/100).
Specs comparison
| Specification | Redmi K100 | Samsung Galaxy A51 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Exynos 9611 | |
| AnTuTu | 3298726 | 355351 | |
| Geekbench Single | 3013 | 365 | |
| Geekbench Multi | 9287 | 1107 | |
| Display | 6.8" AMOLED | 6.5" AMOLED | |
| Resolution | 1280x2772 | — | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 10000 mAh | 4000 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB | |
| Storage | 256GB / 512GB | 64GB / 128GB | |
| OS | Android 17 | — | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | — | 158.5×73.6×7.9 mm | |
| Weight | 234 g | 172 g | |
| Launch price | — | $399 |
Camera comparison
Redmi K100
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy A51
- Main: 48MP
- Front: 32MP
Display comparison
Redmi K100
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy A51
- 6.5" AMOLED
- Refresh rate: 60 Hz
Battery and charging
Redmi K100
- 10000 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A51
- 4000 mAh
- No wireless charging
Overall performance score
We compared Redmi K100 and Samsung Galaxy A51, covering their specs and all relevant benchmarks.
Redmi K100 leads Samsung Galaxy A51 by 828.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K100
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (92/100 vs 25/100).
display
In the "display" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (94/100 vs 51/100).
camera
In the "camera" category, the Redmi K100 and the Samsung Galaxy A51 are nearly equal (37/100 vs 36/100).
battery
In the "battery" category, the Redmi K100 significantly outperforms the Samsung Galaxy A51 (80/100 vs 25/100).
portability
In the "portability" category, the Samsung Galaxy A51 significantly outperforms the Redmi K100 (77/100 vs 25/100).
Frequently asked questions
Which is better: the Redmi K100 or the Samsung Galaxy A51?
The Redmi K100 significantly outperforms the Samsung Galaxy A51 by 39 points (73/100 vs 34/100).
What is the rating of the Redmi K100 and the Samsung Galaxy A51?
The Redmi K100 has a MobileRank rating of 73/100, the Samsung Galaxy A51 — 34/100.
Which is more powerful: the Redmi K100 or the Samsung Galaxy A51?
The Redmi K100 leads on performance (92/100 vs 25/100).
Should you choose the Redmi K100 over the Samsung Galaxy A51?
The Redmi K100 is a better fit for gamers and power users, those who care about battery life.