Realme C100x vs Redmi K20
Comparing the Realme C100x (2026) and the Redmi K20 (2019) on specs and benchmarks. By overall MobileRank rating, the Realme C100x leads — 31/100 vs 18/100 (a 13-point difference). Key differences: the Realme C100x has the bigger battery (7500 mAh vs 4000); the main camera is 50 MP vs 48 MP.
Realme C100x
Redmi K20
- Bigger battery: 7500 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Longer battery life (52/100 vs 12/100)
- Better display (100/100 vs 0/100)
- Better camera (36/100 vs 24/100)
- Better design/ergonomics (61/100 vs 50/100)
- Better value for money (93/100 vs 55/100)
Comparing the Realme C100x vs the Redmi K20, the Realme C100x scores 13 points higher (31/100 vs 18/100). In the "camera" category, the Redmi K20 leads (36/100 vs 24/100). In the "battery" category, the Realme C100x leads (52/100 vs 12/100). In the "value for money" category, the Redmi K20 leads (93/100 vs 55/100). In the "performance" category, both devices are on the same level — 0/100. In the "display" category, the Realme C100x significantly outperforms the Redmi K20 (100/100 vs 0/100). In the "camera" category, the Redmi K20 is a bit better (36/100 vs 24/100). In the "battery" category, the Realme C100x significantly outperforms the Redmi K20 (52/100 vs 12/100). In the "design" category, the Redmi K20 is a bit better (61/100 vs 50/100). In the "value for money" category, the Redmi K20 significantly outperforms the Realme C100x (93/100 vs 55/100).
| Specification | Realme C100x | Redmi K20 | |
|---|---|---|---|
| Processor | — | Qualcomm Snapdragon 730 | |
| AnTuTu | — | 496392 | |
| Geekbench Single | — | 724 | |
| Geekbench Multi | — | 1836 | |
| Display | 6.8" IPS LCD | 6.4" AMOLED | |
| Resolution | 720x1640 | 2340x1080 | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 7500 mAh | 4000 mAh | |
| Charging | — | 18W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 0 MP | 13 MP | |
| Telephoto | 0 MP | 8 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 4GB | 6GB / 8GB | |
| Storage | 128GB / 256GB | 64GB / 128GB / 256GB | |
| OS | Android 16 | Android 9 | |
| NFC | yes | — | |
| Protection | IP64 | — | |
| Weight | — | 191 g | |
| Price | — | $250 |
Realme C100x
- Main: 50MP f/f/1.8
- Front: 5MP
Redmi K20
- Main: 48MP f/f/1.75
- Ultrawide: 13MP
- Telephoto: 8MP
- Front: 20MP
Realme C100x
- 6.8" IPS LCD
- Resolution: 720x1640
- Refresh rate: 120 Hz
Redmi K20
- 6.4" AMOLED
- Resolution: 2340x1080
- Refresh rate: 60 Hz
Realme C100x
- 7500 mAh
- No wireless charging
Redmi K20
- 4000 mAh
- Wired: 18W
- No wireless charging
Realme C100x
Price unknownperformance
In the "performance" category, both devices are on the same level — 0/100.
display
In the "display" category, the Realme C100x significantly outperforms the Redmi K20 (100/100 vs 0/100).
camera
In the "camera" category, the Redmi K20 is a bit better (36/100 vs 24/100).
battery
In the "battery" category, the Realme C100x significantly outperforms the Redmi K20 (52/100 vs 12/100).
design
In the "design" category, the Redmi K20 is a bit better (61/100 vs 50/100).
value for money
In the "value for money" category, the Redmi K20 significantly outperforms the Realme C100x (93/100 vs 55/100).
Which is better: the Realme C100x or the Redmi K20?
The Realme C100x is noticeably better than the Redmi K20 — the overall rating gap is 13 points.
What is the rating of the Realme C100x and the Redmi K20?
The Realme C100x has a MobileRank rating of 31/100, the Redmi K20 — 18/100.
Which has the better camera: the Realme C100x or the Redmi K20?
The Redmi K20 leads on camera score (36/100 vs 24/100).
Should you choose the Realme C100x over the Redmi K20?
The Realme C100x is a better fit for everyday use. The Redmi K20 is a better fit for budget-conscious buyers.