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InnoReviews

POCO X8 vs REDMI K90 Ultra

POCO X8

Xiaomi

POCO X8
59.9Inno Score
VS
WINNER
REDMI K90 Ultra
69.1Inno Score
46.7Performance64.4
66.5Display78.7
42.6Camera43.4
77.2Battery83.2
86.7Features86.7
1 spec wins — POCO X87 spec wins — REDMI K90 Ultra

InnoReviews verdict

REDMI K90 Ultra wins this phone face-off, 69.1 to 59.9, pulling ahead mainly in performance (+18) and display (+12). POCO X8 still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the POCO X8

No decisive spec advantages — this side competes on price and preference.

Reasons to pick the REDMI K90 Ultra

  • Stronger performance score: 64 vs 47
  • Stronger display score: 79 vs 67
  • Stronger battery score: 83 vs 77
  • 49% higher Wired charging: 100 W vs 67 W
  • 38% higher Refresh rate: 165 Hz vs 120 Hz

Display

Display comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
Screen size6.83 ″6.83 ″
Panel typeAMOLEDAMOLED
Resolution1280x27721280x2772
Pixel density447 ppi447 ppi
Refresh rate120 Hz165 Hz+38%
Peak brightness3,500 nits3,500 nits
Screen-to-body89.5 %90.3 %+1%

Performance

Performance comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
ChipsetSnapdragon 6s Gen 4Snapdragon 8 Elite
RAM (max)12 GB16 GB+33%
Storage options128/256GB256/512GB
Storage typeUFS 2.2/3.1UFS 4.1

Camera

Camera comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
Main camera50 MP50 MP
Main aperturef/1.8f/1.7
Ultra-wide—8 MP
Max video1080p@30fps8K@30fps
Front camera16 MP20 MP+25%
OISYesYes

Battery

Battery comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
Capacity8,340 mAh8,550 mAh+3%
Wired charging67 W100 W+49%

Design

Design comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
Weight223 g+2%227 g
Thickness8.6 mm8.2 mm+5%
IP ratingIP66/IP68/IP69/IP69KIP68/IP69
Frame materialPlasticAluminum

Connectivity

Connectivity comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
5GYesYes
Wi-FiWi-Fi 5Wi-Fi 7
Bluetooth5.15.4
NFCYesYes
USBUSB-C 2.0USB-C
eSIMNoNo

Software

Software comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
OS at launchAndroid 16 (HyperOS 3)Android 16 (HyperOS 3)

Audio

Audio comparison: POCO X8 versus REDMI K90 Ultra
SpecPOCO X8REDMI K90 Ultra
Stereo speakersYesYes
3.5mm jackNoNo

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