Redmi K90 Ultra vs Samsung Galaxy A55

The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A55 (2024) runs on the Samsung Exynos 1480; launch prices were $420 and $449. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 55/100 (a 18-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 1,021,736).

The Redmi K90 Ultra is noticeably better than the Samsung Galaxy A55 — the overall rating gap is 18 points.

Profile comparison

Category scores

Redmi K90 Ultra

Performance 92
Display 94
Camera 37
Battery 78
Portability 40
Value for money 72

Samsung Galaxy A55

Performance 58
Display 79
Camera 48
Battery 44
Portability 49
Value for money 34

What makes Redmi K90 Ultra better?

  • Higher AnTuTu: 3233695 vs 1021736
  • Better Geekbench Single: 3013 vs 1050
  • Better Geekbench Multi: 9287 vs 3200
  • Bigger battery: 8550 vs 5000 mAh
  • Faster charging: 100W vs 25W
  • Higher refresh rate: 165Hz vs 120Hz
  • Cheaper at launch: $420 vs $449

  • Higher performance (92/100 vs 58/100)
  • Longer battery life (78/100 vs 44/100)
  • Better display (94/100 vs 79/100)

What makes Samsung Galaxy A55 better?

  • Lighter: 213g vs 227g

  • Better camera (48/100 vs 37/100)
  • Better portability (49/100 vs 40/100)

Comparison verdict

Comparing the Redmi K90 Ultra vs the Samsung Galaxy A55, the Redmi K90 Ultra scores 18 points higher (73/100 vs 55/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 58/100). In the "camera" category, the Samsung Galaxy A55 leads (48/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 44/100). Value score: Redmi K90 Ultra — 72/100, Samsung Galaxy A55 — 34/100; 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 significantly outperforms the Samsung Galaxy A55 (92/100 vs 58/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A55 (94/100 vs 79/100). In the "camera" category, the Samsung Galaxy A55 is a bit better (48/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A55 (78/100 vs 44/100). In the "portability" category, the Samsung Galaxy A55 is a bit better (49/100 vs 40/100).

Redmi K90 Ultra: The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.

Specs comparison

Specification Redmi K90 Ultra Samsung Galaxy A55
Processor Qualcomm Snapdragon 8 Elite Samsung Exynos 1480
AnTuTu 3233695 1021736
Geekbench Single 3013 1050
Geekbench Multi 9287 3200
Display 6.8" AMOLED 6.6" Super AMOLED
Resolution 1280x2772 2340x1080
Refresh rate 165 Hz 120 Hz
Battery 8550 mAh 5000 mAh
Charging 100W 25W
DXOMark (camera) — 108
Main camera 50 MP 50 MP
Ultrawide 8 MP 12 MP
Front camera 20 MP 13 MP
RAM 12GB / 16GB 8GB
Storage 256GB / 512GB 128GB / 256GB
OS Android 16 Android 14 / One UI 6.1
Brightness (peak) 3500 nits 1000 nits
NFC yes yes
Protection IP68/IP69 IP67
Dimensions 162.9×77.9×8.2 mm 161.1×77.4×8.2 mm
Weight 227 g 213 g
Launch price $420 $449

Camera comparison

Redmi K90 Ultra

  • Main: 50MP f/1.7
  • Ultrawide: 8MP
  • Front: 20MP
37
camera

Samsung Galaxy A55

  • Main: 50MP f/1.8
  • Ultrawide: 12MP
  • Front: 13MP
48
camera

Display comparison

Redmi K90 Ultra

  • 6.8" AMOLED
  • Resolution: 1280x2772
  • Refresh rate: 165 Hz
94
display

Samsung Galaxy A55

  • 6.6" Super AMOLED
  • Resolution: 2340x1080
  • Refresh rate: 120 Hz
79
display

Battery and charging

Redmi K90 Ultra

  • 8550 mAh
  • Wired: 100W
  • No wireless charging
78
battery

Samsung Galaxy A55

  • 5000 mAh
  • Wired: 25W
  • No wireless charging
44
battery

Overall performance score

We compared Redmi K90 Ultra and Samsung Galaxy A55, covering their specs and all relevant benchmarks.

Redmi K90 Ultra Qualcomm Snapdragon 8 Elite
73/100
3233695 AnTuTu
Samsung Galaxy A55 Samsung Exynos 1480
55/100 -216.5%
1021736 AnTuTu

Redmi K90 Ultra leads Samsung Galaxy A55 by 216.5% in our overall performance rating.

Benchmarks

Launch prices and where to check today's

Redmi K90 Ultra

$420

Samsung Galaxy A55

$449

Launch price difference: $29. Redmi K90 Ultra was $29 cheaper at launch.

Detailed category analysis

performance

In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A55 (92/100 vs 58/100).

display

In the "display" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A55 (94/100 vs 79/100).

camera

In the "camera" category, the Samsung Galaxy A55 is a bit better (48/100 vs 37/100).

battery

In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A55 (78/100 vs 44/100).

portability

In the "portability" category, the Samsung Galaxy A55 is a bit better (49/100 vs 40/100).

Frequently asked questions

Which is better: the Redmi K90 Ultra or the Samsung Galaxy A55?

The Redmi K90 Ultra is noticeably better than the Samsung Galaxy A55 — the overall rating gap is 18 points.

What is the rating of the Redmi K90 Ultra and the Samsung Galaxy A55?

The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy A55 — 55/100.

Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy A55?

The Samsung Galaxy A55 leads on camera score (48/100 vs 37/100).

Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy A55?

The Redmi K90 Ultra leads on performance (92/100 vs 58/100).

Should you choose the Redmi K90 Ultra over the Samsung Galaxy A55?

The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.