Realme C100 5G vs Redmi K80 Ultra
The Realme C100 5G (2026) runs on the Dimensity 6300, while the Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+; launch prices were $210 and $350. By overall MobileRank rating, the Redmi K80 Ultra leads — 73/100 vs 45/100 (a 28-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 7000); the Redmi K80 Ultra is faster in AnTuTu (2,876,004 vs 524,785); the Redmi K80 Ultra has NFC for contactless payments, the Realme C100 5G doesn't.
Realme C100 5G
Redmi K80 Ultra
- Cheaper at launch: $210 vs $350
- Overall rating 45/100
- Higher AnTuTu: 2876004 vs 524785
- Better Geekbench Single: 2729 vs 771
- Better Geekbench Multi: 8430 vs 1980
- Bigger battery: 7410 vs 7000 mAh
- Faster charging: 100W vs 45W
- Lighter: 219g vs 224g
- Higher performance (89/100 vs 43/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (86/100 vs 60/100)
- Better display (94/100 vs 65/100)
- Better portability (40/100 vs 36/100)
Comparing the Realme C100 5G vs the Redmi K80 Ultra, the Redmi K80 Ultra scores 28 points higher (73/100 vs 45/100). In the "performance" category, the Redmi K80 Ultra leads (89/100 vs 43/100). In the "battery" category, the Redmi K80 Ultra leads (86/100 vs 60/100). Value score: Realme C100 5G — 50/100, Redmi K80 Ultra — 86/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K80 Ultra significantly outperforms the Realme C100 5G (89/100 vs 43/100). In the "display" category, the Redmi K80 Ultra notably outperforms the Realme C100 5G (94/100 vs 65/100). In the "camera" category, the Redmi K80 Ultra is a bit better (37/100 vs 30/100). In the "battery" category, the Redmi K80 Ultra notably outperforms the Realme C100 5G (86/100 vs 60/100). In the "portability" category, the Redmi K80 Ultra and the Realme C100 5G are nearly equal (40/100 vs 36/100).
| Specification | Realme C100 5G | Redmi K80 Ultra | |
|---|---|---|---|
| Processor | Dimensity 6300 | MediaTek Dimensity 9400+ | |
| AnTuTu | 524785 | 2876004 | |
| Geekbench Single | 771 | 2729 | |
| Geekbench Multi | 1980 | 8430 | |
| Display | 6.8" IPS LCD | 6.8" OLED | |
| Resolution | 720x1570 | 1280x2772 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7000 mAh | 7410 mAh | |
| Charging | 45W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 / realme UI 7.0 | Android 15 | |
| Brightness (peak) | 900 nits | 3200 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 166.8×78.2×8.9 mm | — | |
| Weight | 224 g | 219 g | |
| Launch price | $210 | $350 |
Realme C100 5G
- Main: 50MP f/f/1.8
- Front: 5MP
Redmi K80 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
Realme C100 5G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 144 Hz
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Realme C100 5G
- 7000 mAh
- Wired: 45W
- No wireless charging
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
We compared Realme C100 5G and Redmi K80 Ultra, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads Realme C100 5G by 81.8% in our overall performance rating.
Launch price difference: $140. Realme C100 5G was $140 cheaper at launch.
performance
In the "performance" category, the Redmi K80 Ultra significantly outperforms the Realme C100 5G (89/100 vs 43/100).
display
In the "display" category, the Redmi K80 Ultra notably outperforms the Realme C100 5G (94/100 vs 65/100).
camera
In the "camera" category, the Redmi K80 Ultra is a bit better (37/100 vs 30/100).
battery
In the "battery" category, the Redmi K80 Ultra notably outperforms the Realme C100 5G (86/100 vs 60/100).
portability
In the "portability" category, the Redmi K80 Ultra and the Realme C100 5G are nearly equal (40/100 vs 36/100).
Which is better: the Realme C100 5G or the Redmi K80 Ultra?
The Redmi K80 Ultra significantly outperforms the Realme C100 5G by 28 points (73/100 vs 45/100).
What is the rating of the Realme C100 5G and the Redmi K80 Ultra?
The Realme C100 5G has a MobileRank rating of 45/100, the Redmi K80 Ultra — 73/100.
Which has the better camera: the Realme C100 5G or the Redmi K80 Ultra?
The Redmi K80 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Realme C100 5G or the Redmi K80 Ultra?
The Redmi K80 Ultra leads on performance (89/100 vs 43/100).
Should you choose the Realme C100 5G over the Redmi K80 Ultra?
The Realme C100 5G is a better fit for everyday use. The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.