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 — 68/100 vs 31/100 (a 37-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5600); the Redmi K90 is faster in AnTuTu (3,088,357 vs 358,383); the Redmi K90 has NFC for contactless payments, the Realme C75x doesn't.
Realme C75x
Redmi K90
- Lighter: 196g vs 206g
- Better design/ergonomics (55/100 vs 42/100)
- Higher AnTuTu: 3088357 vs 358383
- Better Geekbench Single: 3050 vs 432
- Better Geekbench Multi: 9300 vs 1416
- Bigger battery: 7100 vs 5600 mAh
- Faster charging: 100W vs 45W
- Higher performance (69/100 vs 0/100)
- Better camera (53/100 vs 24/100)
- Longer battery life (71/100 vs 50/100)
- Better value for money (82/100 vs 55/100)
Comparing the Realme C75x vs the Redmi K90, the Redmi K90 scores 37 points higher (68/100 vs 31/100). In the "performance" category, the Redmi K90 leads (69/100 vs 0/100). In the "camera" category, the Redmi K90 leads (53/100 vs 24/100). In the "battery" category, the Redmi K90 leads (71/100 vs 50/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 55/100). In the "performance" category, the Redmi K90 significantly outperforms the Realme C75x (69/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi K90 notably outperforms the Realme C75x (53/100 vs 24/100). In the "battery" category, the Redmi K90 notably outperforms the Realme C75x (71/100 vs 50/100). In the "design" category, the Realme C75x is a bit better (55/100 vs 42/100). In the "value for money" category, the Redmi K90 notably outperforms the Realme C75x (82/100 vs 55/100).
| Specification | Realme C75x | Redmi K90 | |
|---|---|---|---|
| Processor | MediaTek Helio G81 Ultra | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 358383 | 3088357 | |
| Geekbench Single | 432 | 3050 | |
| Geekbench Multi | 1416 | 9300 | |
| 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 | |
| Price | — | $401 |
Realme C75x
- Main: 50MP f/f/1.8
- Front: 5MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Realme C75x
- 6.7" IPS LCD
- Resolution: 720x1604
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Realme C75x
- 5600 mAh
- Wired: 45W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared Realme C75x and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Realme C75x by 88.4% in our overall performance rating.
Realme C75x
Price unknownperformance
In the "performance" category, the Redmi K90 significantly outperforms the Realme C75x (69/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Redmi K90 notably outperforms the Realme C75x (53/100 vs 24/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Realme C75x (71/100 vs 50/100).
design
In the "design" category, the Realme C75x is a bit better (55/100 vs 42/100).
value for money
In the "value for money" category, the Redmi K90 notably outperforms the Realme C75x (82/100 vs 55/100).
Which is better: the Realme C75x or the Redmi K90?
The Redmi K90 significantly outperforms the Realme C75x by 37 points (68/100 vs 31/100).
What is the rating of the Realme C75x and the Redmi K90?
The Realme C75x has a MobileRank rating of 31/100, the Redmi K90 — 68/100.
Which has the better camera: the Realme C75x or the Redmi K90?
The Redmi K90 leads on camera score (53/100 vs 24/100).
Which is more powerful: the Realme C75x or the Redmi K90?
The Redmi K90 leads on performance (69/100 vs 0/100).
Should you choose the Realme C75x over the Redmi K90?
The Realme C75x is a better fit for everyday use. The Redmi K90 is a better fit for active users, budget-conscious buyers.