Realme C75x vs Redmi K90
The Realme C75x (2025) runs on the MediaTek Helio G81 Ultra, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 39/100 (a 37-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5600); the Redmi K90 is faster in AnTuTu (3,077,585 vs 358,608); the Redmi K90 has NFC for contactless payments, the Realme C75x doesn't.
Profile comparison
Category scores
Realme C75x
Redmi K90
What makes Realme C75x better?
- Lighter: 196g vs 206g
- Better portability (62/100 vs 55/100)
What makes Redmi K90 better?
- Higher AnTuTu: 3077585 vs 358608
- Better Geekbench Single: 3013 vs 432
- Better Geekbench Multi: 9287 vs 1416
- Bigger battery: 7100 vs 5600 mAh
- Faster charging: 100W vs 45W
- Higher performance (91/100 vs 30/100)
- Better camera (58/100 vs 30/100)
- Longer battery life (72/100 vs 55/100)
- Better display (82/100 vs 55/100)
Comparison verdict
Comparing the Realme C75x vs the Redmi K90, the Redmi K90 scores 37 points higher (76/100 vs 39/100). In the "performance" category, the Redmi K90 leads (91/100 vs 30/100). In the "camera" category, the Redmi K90 leads (58/100 vs 30/100). In the "battery" category, the Redmi K90 leads (72/100 vs 55/100). In the "performance" category, the Redmi K90 significantly outperforms the Realme C75x (91/100 vs 30/100). In the "display" category, the Redmi K90 notably outperforms the Realme C75x (82/100 vs 55/100). In the "camera" category, the Redmi K90 notably outperforms the Realme C75x (58/100 vs 30/100). In the "battery" category, the Redmi K90 notably outperforms the Realme C75x (72/100 vs 55/100). In the "portability" category, the Realme C75x is a bit better (62/100 vs 55/100).
Specs comparison
| Specification | Realme C75x | Redmi K90 | |
|---|---|---|---|
| Processor | MediaTek Helio G81 Ultra | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 358608 | 3077585 | |
| Geekbench Single | 432 | 3013 | |
| Geekbench Multi | 1416 | 9287 | |
| Display | 6.7" IPS LCD | 6.6" AMOLED | |
| Resolution | 720x1604 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5600 mAh | 7100 mAh | |
| Charging | 45W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 15, Realme UI 6.0 | Android 16 | |
| Brightness (peak) | 625 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 165.7×76.2×8.0 mm | 157.5×75.3×8.0 mm | |
| Weight | 196 g | 206 g | |
| Launch price | — | $401 |
Camera comparison
Realme C75x
- Main: 50MP f/1.8
- Front: 5MP
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Realme C75x
- 6.7" IPS LCD
- Resolution: 720x1604
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Battery and charging
Realme C75x
- 5600 mAh
- Wired: 45W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Realme C75x and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Realme C75x by 88.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Realme C75x
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 significantly outperforms the Realme C75x (91/100 vs 30/100).
display
In the "display" category, the Redmi K90 notably outperforms the Realme C75x (82/100 vs 55/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the Realme C75x (58/100 vs 30/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Realme C75x (72/100 vs 55/100).
portability
In the "portability" category, the Realme C75x is a bit better (62/100 vs 55/100).
Frequently asked questions
Which is better: the Realme C75x or the Redmi K90?
The Redmi K90 significantly outperforms the Realme C75x by 37 points (76/100 vs 39/100).
What is the rating of the Realme C75x and the Redmi K90?
The Realme C75x has a MobileRank rating of 39/100, the Redmi K90 — 76/100.
Which has the better camera: the Realme C75x or the Redmi K90?
The Redmi K90 leads on camera score (58/100 vs 30/100).
Which is more powerful: the Realme C75x or the Redmi K90?
The Redmi K90 leads on performance (91/100 vs 30/100).
Should you choose the Realme C75x over the Redmi K90?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.