REDMI K90 vs Xiaomi 15 Ultra

Specs compared side by side, measured on real phones shared by owners with the Device Info app.

REDMI K90REDMI K90Snapdragon 8 EliteChange
Xiaomi 15 UltraXiaomi 15 UltraSnapdragon 8 EliteChange

Key differences

  1. Screen: 6.6 inches on the REDMI K90, 6.7 inches on the Xiaomi 15 Ultra. Both run at up to 120 Hz.
  2. Battery: 7,100 mAh on the REDMI K90, 5,410 mAh on the Xiaomi 15 Ultra.
  3. Versions: owners have shared the REDMI K90 as 12GB | 256GB, the Xiaomi 15 Ultra as 16GB | 512GB and 16GB | 1TB.
  4. Software: Android 17 on the REDMI K90, Android 16 on the Xiaomi 15 Ultra (newest seen).

The same on both: the Snapdragon 8 Elite chip, Wi-Fi 7, NFC and Widevine L1.

Chipset

Chipset
Snapdragon 8 EliteSnapdragon 8 Elite
Process
3 nm TSMC N3E3 nm TSMC N3E
CPU
2× 4.32 GHz Oryon V2 Phoenix L
6× 3.53 GHz Oryon V2 Phoenix M2× 4.32 GHz Oryon V2 Phoenix L
6× 3.53 GHz Oryon V2 Phoenix M
Top CPU speed
4.32 GHz4.32 GHz
CPU cores
88
GPU
Adreno 830Adreno 830

Memory

Versions seen
12GB | 256GB16GB | 512GB
16GB | 1TB
RAM type
LPDDR5XLPDDR5X
Storage type
UFS 4.0UFS 4.0

Display

Size
6.6 in6.7 in
Resolution
1156 × 25101440 × 3200
Pixel density
419 ppi522 ppi
Refresh rates
120 Hzalso 60, 90120 Hzalso 24, 30, 40, 60, 90
HDR
Dolby Vision, HDR10, HDR10+, HLGDolby Vision, HDR10, HDR10+, HLG

Battery

Capacity
7,100 mAh5,410 mAh

Cameras

Back camera
12.6 MP4096 × 3072 · f/1.88 · 5.56 mm · OIS12.6 MP4096 × 3072 · f/1.63 · 8.72 mm · OIS
Front camera
5 MP2592 × 1944 · f/2.2 · 2.24 mm8 MP3264 × 2448 · f/2 · 2.83 mm

Megapixels are what Android reports to apps. Many phones combine pixels by default, so the advertised megapixels can be higher.

Connectivity

Wi-Fi
Wi-Fi 7Wi-Fi 7
6 GHz Wi-Fi
YesYes
Bluetooth LE Audio
NoYes
NFC
YesYes
UWB
NoNo
USB host
YesYes

Software

Android
Android 17Android 16
Released with
Android 16Android 15
Widevine DRM
L1L1

Sensors

Sensors
80 sensors80 sensors
REDMI K90 full specs Xiaomi 15 Ultra full specs

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From phones shared with the Device Info app · updated November 2026 Hardware specs only. No personal data. Privacy