Realme C100x vs Xiaomi 17 Ultra
Comparing the Realme C100x (2026) and the Xiaomi 17 Ultra (2026) on specs and benchmarks. By overall MobileRank rating, the Xiaomi 17 Ultra leads — 82/100 vs 31/100 (a 51-point difference). Key differences: the Realme C100x has the bigger battery (7500 mAh vs 6000).
Realme C100x
Xiaomi 17 Ultra
- Bigger battery: 7500 vs 6000 mAh
- Better design/ergonomics (50/100 vs 17/100)
- Better value for money (55/100 vs 41/100)
- Higher performance (87/100 vs 0/100)
- Better camera (93/100 vs 24/100)
- Longer battery life (72/100 vs 52/100)
Comparing the Realme C100x vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 51 points higher (82/100 vs 31/100). In the "performance" category, the Xiaomi 17 Ultra leads (87/100 vs 0/100). In the "camera" category, the Xiaomi 17 Ultra leads (93/100 vs 24/100). In the "battery" category, the Xiaomi 17 Ultra leads (72/100 vs 52/100). In the "value for money" category, the Realme C100x leads (55/100 vs 41/100). In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100x (87/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100x (93/100 vs 24/100). In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C100x (72/100 vs 52/100). In the "design" category, the Realme C100x significantly outperforms the Xiaomi 17 Ultra (50/100 vs 17/100). In the "value for money" category, the Realme C100x is a bit better (55/100 vs 41/100).
| Specification | Realme C100x | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | — | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 3593401 | |
| Geekbench Single | — | 3640 | |
| Geekbench Multi | — | 11033 | |
| Display | 6.8" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1640 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7500 mAh | 6000 mAh | |
| Charging | — | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 166 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 4GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | — | 162.9×77.6×8.3 mm | |
| Weight | — | 226 g | |
| Price | — | $999 |
Realme C100x
- Main: 50MP f/f/1.8
- Front: 5MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Realme C100x
- 6.8" IPS LCD
- Resolution: 720x1640
- Refresh rate: 120 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Realme C100x
- 7500 mAh
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
Realme C100x
Price unknownperformance
In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100x (87/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100x (93/100 vs 24/100).
battery
In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C100x (72/100 vs 52/100).
design
In the "design" category, the Realme C100x significantly outperforms the Xiaomi 17 Ultra (50/100 vs 17/100).
value for money
In the "value for money" category, the Realme C100x is a bit better (55/100 vs 41/100).
Which is better: the Realme C100x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Realme C100x by 51 points (82/100 vs 31/100).
What is the rating of the Realme C100x and the Xiaomi 17 Ultra?
The Realme C100x has a MobileRank rating of 31/100, the Xiaomi 17 Ultra — 82/100.
Which has the better camera: the Realme C100x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 24/100).
Which is more powerful: the Realme C100x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (87/100 vs 0/100).
Should you choose the Realme C100x over the Xiaomi 17 Ultra?
The Realme C100x is a better fit for everyday use. The Xiaomi 17 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.