Realme C100 5G vs Vivo X300 Ultra
The Realme C100 5G (2026) runs on the Dimensity 6300, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $210 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 45/100 (a 46-point difference). Key differences: the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 528,398); the Vivo X300 Ultra has NFC for contactless payments, the Realme C100 5G doesn't.
Profile comparison
Category scores
Realme C100 5G
Vivo X300 Ultra
What makes Realme C100 5G better?
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 224g vs 230g
- Cheaper at launch: $210 vs $950
- Overall rating 45/100
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 528398
- Better Geekbench Single: 3639 vs 771
- Better Geekbench Multi: 11047 vs 1980
- Faster charging: 100W vs 45W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 43/100)
- Better camera (96/100 vs 30/100)
- Longer battery life (85/100 vs 60/100)
- Better display (89/100 vs 65/100)
- Better portability (39/100 vs 36/100)
Comparison verdict
Comparing the Realme C100 5G vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 46 points higher (91/100 vs 45/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 43/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 30/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 60/100). Value score: Realme C100 5G — 48/100, Vivo X300 Ultra — 94/100; 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 Vivo X300 Ultra significantly outperforms the Realme C100 5G (99/100 vs 43/100). In the "display" category, the Vivo X300 Ultra notably outperforms the Realme C100 5G (89/100 vs 65/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme C100 5G (96/100 vs 30/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme C100 5G (85/100 vs 60/100). In the "portability" category, the Vivo X300 Ultra and the Realme C100 5G are nearly equal (39/100 vs 36/100).
Specs comparison
| Specification | Realme C100 5G | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Dimensity 6300 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 528398 | 4247433 | |
| Geekbench Single | 771 | 3639 | |
| Geekbench Multi | 1980 | 11047 | |
| Display | 6.8" IPS LCD | 6.8" LTPO OLED | |
| Resolution | 720x1570 | 3168x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 7000 mAh | |
| Charging | 45W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 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 | — | |
| NFC | no | yes | |
| Protection | IP64 | IP69 | |
| Dimensions | 166.8×78.2×8.9 mm | 163.0×76.8×8.2 mm | |
| Weight | 224 g | 230 g | |
| Launch price | $210 | $950 |
Camera comparison
Realme C100 5G
- Main: 50MP f/1.8
- Front: 5MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Realme C100 5G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 144 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Realme C100 5G
- 7000 mAh
- Wired: 45W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Realme C100 5G and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Realme C100 5G by 87.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $740. Realme C100 5G was $740 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme C100 5G (99/100 vs 43/100).
display
In the "display" category, the Vivo X300 Ultra notably outperforms the Realme C100 5G (89/100 vs 65/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme C100 5G (96/100 vs 30/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme C100 5G (85/100 vs 60/100).
portability
In the "portability" category, the Vivo X300 Ultra and the Realme C100 5G are nearly equal (39/100 vs 36/100).
Frequently asked questions
Which is better: the Realme C100 5G or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Realme C100 5G by 46 points (91/100 vs 45/100).
What is the rating of the Realme C100 5G and the Vivo X300 Ultra?
The Realme C100 5G has a MobileRank rating of 45/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Realme C100 5G or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 30/100).
Which is more powerful: the Realme C100 5G or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 43/100).
Should you choose the Realme C100 5G over the Vivo X300 Ultra?
The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.