Realme C100 5G vs Xiaomi 17 Ultra
The Realme C100 5G (2026) runs on the Dimensity 6300, while the Xiaomi 17 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $210 and $999. By overall MobileRank rating, the Xiaomi 17 Ultra leads — 88/100 vs 45/100 (a 43-point difference). Key differences: the Realme C100 5G has the bigger battery (7000 mAh vs 6000); the Xiaomi 17 Ultra is faster in AnTuTu (3,593,401 vs 524,785); the Xiaomi 17 Ultra has NFC for contactless payments, the Realme C100 5G doesn't.
Realme C100 5G
Xiaomi 17 Ultra
- Bigger battery: 7000 vs 6000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 224g vs 226g
- Cheaper at launch: $210 vs $999
- Overall rating 45/100
- Higher AnTuTu: 3593401 vs 524785
- Better Geekbench Single: 3640 vs 771
- Better Geekbench Multi: 11033 vs 1980
- Faster charging: 90W vs 45W
- Higher performance (96/100 vs 43/100)
- Better camera (93/100 vs 30/100)
- Longer battery life (80/100 vs 60/100)
- Better display (89/100 vs 65/100)
- Better portability (40/100 vs 36/100)
Comparing the Realme C100 5G vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 43 points higher (88/100 vs 45/100). In the "performance" category, the Xiaomi 17 Ultra leads (96/100 vs 43/100). In the "camera" category, the Xiaomi 17 Ultra leads (93/100 vs 30/100). In the "battery" category, the Xiaomi 17 Ultra leads (80/100 vs 60/100). Value score: Realme C100 5G — 50/100, Xiaomi 17 Ultra — 88/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100 5G (96/100 vs 43/100). In the "display" category, the Xiaomi 17 Ultra notably outperforms the Realme C100 5G (89/100 vs 65/100). In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100 5G (93/100 vs 30/100). In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C100 5G (80/100 vs 60/100). In the "portability" category, the Xiaomi 17 Ultra and the Realme C100 5G are nearly equal (40/100 vs 36/100).
| Specification | Realme C100 5G | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | Dimensity 6300 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 524785 | 3593401 | |
| Geekbench Single | 771 | 3640 | |
| Geekbench Multi | 1980 | 11033 | |
| Display | 6.8" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1570 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 6000 mAh | |
| Charging | 45W | 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 / 6GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 / realme UI 7.0 | Android 16 | |
| Brightness (peak) | 900 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 166.8×78.2×8.9 mm | 162.9×77.6×8.3 mm | |
| Weight | 224 g | 226 g | |
| Launch price | $210 | $999 |
Realme C100 5G
- Main: 50MP f/f/1.8
- Front: 5MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Realme C100 5G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 144 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Realme C100 5G
- 7000 mAh
- Wired: 45W
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
We compared Realme C100 5G and Xiaomi 17 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra leads Realme C100 5G by 85.4% in our overall performance rating.
Launch price difference: $789. Realme C100 5G was $789 cheaper at launch.
performance
In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100 5G (96/100 vs 43/100).
display
In the "display" category, the Xiaomi 17 Ultra notably outperforms the Realme C100 5G (89/100 vs 65/100).
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C100 5G (93/100 vs 30/100).
battery
In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C100 5G (80/100 vs 60/100).
portability
In the "portability" category, the Xiaomi 17 Ultra and the Realme C100 5G are nearly equal (40/100 vs 36/100).
Which is better: the Realme C100 5G or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Realme C100 5G by 43 points (88/100 vs 45/100).
What is the rating of the Realme C100 5G and the Xiaomi 17 Ultra?
The Realme C100 5G has a MobileRank rating of 45/100, the Xiaomi 17 Ultra — 88/100.
Which has the better camera: the Realme C100 5G or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 30/100).
Which is more powerful: the Realme C100 5G or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (96/100 vs 43/100).
Should you choose the Realme C100 5G over the Xiaomi 17 Ultra?
The Realme C100 5G is a better fit for everyday use. The Xiaomi 17 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.