OnePlus Ace 6T vs Redmi K90 Ultra
The OnePlus Ace 6T (2025) runs on the Qualcomm Snapdragon 8 Gen 5, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $320 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 72/100 (a 1-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 8300); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 2,788,201); the OnePlus Ace 6T is noticeably lighter (211g vs 227g).
Profile comparison
Category scores
OnePlus Ace 6T
Redmi K90 Ultra
What makes OnePlus Ace 6T better?
- Lighter: 211g vs 227g
- Cheaper at launch: $320 vs $420
- Better portability (51/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 2788201
- Better Geekbench Single: 3013 vs 2833
- Better Geekbench Multi: 9287 vs 9119
- Bigger battery: 8550 vs 8300 mAh
- Higher performance (92/100 vs 89/100)
- Better camera (37/100 vs 35/100)
- Longer battery life (78/100 vs 77/100)
Comparison verdict
Comparing the OnePlus Ace 6T vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 1 points higher (73/100 vs 72/100). Value score: OnePlus Ace 6T — 80/100, Redmi K90 Ultra — 72/100; 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 Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (92/100 vs 89/100). In the "display" category, both devices are on the same level — 94/100. In the "camera" category, the Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (37/100 vs 35/100). In the "battery" category, the Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (78/100 vs 77/100). In the "portability" category, the OnePlus Ace 6T is a bit better (51/100 vs 40/100).
Specs comparison
| Specification | OnePlus Ace 6T | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2788201 | 3233695 | |
| Geekbench Single | 2833 | 3013 | |
| Geekbench Multi | 9119 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2800 | 1280x2772 | |
| Refresh rate | 165 Hz | 165 Hz | |
| Battery | 8300 mAh | 8550 mAh | |
| Charging | 100W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3600 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.4×77.0×8.1 mm | 162.9×77.9×8.2 mm | |
| Weight | 211 g | 227 g | |
| Launch price | $320 | $420 |
Camera comparison
OnePlus Ace 6T
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
OnePlus Ace 6T
- 6.8" AMOLED
- Resolution: 1272x2800
- Refresh rate: 165 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OnePlus Ace 6T
- 8300 mAh
- Wired: 100W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OnePlus Ace 6T and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads OnePlus Ace 6T by 13.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $100. OnePlus Ace 6T was $100 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (92/100 vs 89/100).
display
In the "display" category, both devices are on the same level — 94/100.
camera
In the "camera" category, the Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (37/100 vs 35/100).
battery
In the "battery" category, the Redmi K90 Ultra and the OnePlus Ace 6T are nearly equal (78/100 vs 77/100).
portability
In the "portability" category, the OnePlus Ace 6T is a bit better (51/100 vs 40/100).
Frequently asked questions
Which is better: the OnePlus Ace 6T or the Redmi K90 Ultra?
The Redmi K90 Ultra edges out the OnePlus Ace 6T by just 1 points — the two devices are very close in overall level.
What is the rating of the OnePlus Ace 6T and the Redmi K90 Ultra?
The OnePlus Ace 6T has a MobileRank rating of 72/100, the Redmi K90 Ultra — 73/100.
Should you choose the OnePlus Ace 6T over the Redmi K90 Ultra?
The OnePlus Ace 6T is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.