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InnoReviews

OPPO K13x 5G vs REDMI K90 Ultra

OPPO K13x 5G
37.3Inno Score
VS
WINNER
REDMI K90 Ultra
69.1Inno Score
21.8Performance64.4
45.2Display78.7
29Camera43.4
61.9Battery83.2
36Features86.7
3 spec wins — OPPO K13x 5G10 spec wins — REDMI K90 Ultra

InnoReviews verdict

REDMI K90 Ultra wins this phone face-off, 69.1 to 37.3, pulling ahead mainly in features (+51) and performance (+43). OPPO K13x 5G still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the OPPO K13x 5G

  • 15% lower weight: 194 g vs 227 g
  • Has 3.5mm jack — the other doesn't

Reasons to pick the REDMI K90 Ultra

  • Stronger performance score: 64 vs 22
  • Stronger display score: 79 vs 45
  • Stronger camera score: 43 vs 29
  • Stronger battery score: 83 vs 62
  • Stronger features score: 87 vs 36

Display

Display comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
Screen size6.67 ″6.83 ″+2%
Panel typeIPS LCDAMOLED
Resolution1604x7201280x2772
Pixel density264 ppi447 ppi+69%
Refresh rate120 Hz165 Hz+38%
Peak brightness1,000 nits3,500 nits+250%
Screen-to-body89.9 %90.3 %

Performance

Performance comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
ChipsetMediaTek Dimensity 6300Snapdragon 8 Elite
Geekbench 6 (single)785Bottom 19%—
Geekbench 6 (multi)1,984Bottom 16%—
RAM (max)8 GB16 GB+100%
Storage options128GB256/512GB
Storage typeUFS 2.2UFS 4.1

Camera

Camera comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
Main camera50 MP50 MP
Main aperturef/1.8f/1.7
Ultra-wide—8 MP
Max video1080p@60fps8K@30fps
Front camera8 MP20 MP+150%
OISNoYes

Battery

Battery comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
Capacity6,000 mAh8,550 mAh+43%
Wired charging45 W100 W+122%

Design

Design comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
Weight194 g+15%227 g
Thickness7.9 mm+4%8.2 mm
IP ratingIP65IP68/IP69
Frame materialPlasticAluminum

Connectivity

Connectivity comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
5GYesYes
Wi-FiWi-Fi 5Wi-Fi 7
Bluetooth5.45.4
NFC—Yes
USBUSB-CUSB-C
eSIM—No

Software

Software comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
OS at launchAndroid 15 (ColorOS 15)Android 16 (HyperOS 3)
OS update pledge2 years—

Audio

Audio comparison: OPPO K13x 5G versus REDMI K90 Ultra
SpecOPPO K13x 5GREDMI K90 Ultra
Stereo speakers—Yes
3.5mm jackYesNo

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