Realme 8i vs Redmi K90 Ultra
The Realme 8i (2021) runs on the MediaTek Helio G96, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 43/100 (a 30-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 493,222); the Redmi K90 Ultra has NFC for contactless payments, the Realme 8i doesn't; the Realme 8i is noticeably lighter (194g vs 227g).
Profile comparison
Category scores
Realme 8i
Redmi K90 Ultra
What makes Realme 8i better?
- Lighter: 194g vs 227g
- Better portability (57/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 493222
- Better Geekbench Single: 3013 vs 674
- Better Geekbench Multi: 9287 vs 1793
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 18W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 40/100)
- Better camera (37/100 vs 32/100)
- Longer battery life (78/100 vs 43/100)
- Better display (94/100 vs 66/100)
Comparison verdict
Comparing the Realme 8i vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 30 points higher (73/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 40/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme 8i (92/100 vs 40/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Realme 8i (94/100 vs 66/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 32/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme 8i (78/100 vs 43/100). In the "portability" category, the Realme 8i notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Specs comparison
| Specification | Realme 8i | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G96 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 493222 | 3233695 | |
| Geekbench Single | 674 | 3013 | |
| Geekbench Multi | 1793 | 9287 | |
| Display | 6.6" IPS LCD | 6.8" AMOLED | |
| Resolution | 1080x2412 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 18W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB | |
| OS | Android 11, Realme UI 2.0 | Android 16 | |
| Brightness (peak) | 600 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 164.1×75.5×8.5 mm | 162.9×77.9×8.2 mm | |
| Weight | 194 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Realme 8i
- Main: 50MP f/1.8
- Front: 16MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Realme 8i
- 6.6" IPS LCD
- Resolution: 1080x2412
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Realme 8i
- 5000 mAh
- Wired: 18W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Realme 8i and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Realme 8i by 84.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Realme 8i
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme 8i (92/100 vs 40/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Realme 8i (94/100 vs 66/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 32/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme 8i (78/100 vs 43/100).
portability
In the "portability" category, the Realme 8i notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Frequently asked questions
Which is better: the Realme 8i or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme 8i by 30 points (73/100 vs 43/100).
What is the rating of the Realme 8i and the Redmi K90 Ultra?
The Realme 8i has a MobileRank rating of 43/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Realme 8i or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 32/100).
Which is more powerful: the Realme 8i or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 40/100).
Should you choose the Realme 8i over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.