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InnoReviews

REDMI K90 Ultra vs Vivo X300s

REDMI K90 Ultra
69.1Inno Score
VS
WINNER
Vivo X300s
76.8Inno Score
64.4Performance64.4
78.7Display78.5
43.4Camera78.1
83.2Battery88.7
86.7Features84
4 spec wins — REDMI K90 Ultra8 spec wins — Vivo X300s

InnoReviews verdict

Vivo X300s wins this phone face-off, 76.8 to 69.1, pulling ahead mainly in camera (+35) and battery (+6). REDMI K90 Ultra still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the REDMI K90 Ultra

  • 20% higher capacity: 8,550 mAh vs 7,100 mAh
  • 15% higher Refresh rate: 165 Hz vs 144 Hz
  • 11% higher Wired charging: 100 W vs 90 W

Reasons to pick the Vivo X300s

  • Stronger camera score: 78 vs 43
  • Stronger battery score: 89 vs 83
  • 525% higher ultra-wide: 50 MP vs 8 MP
  • 300% higher Main camera: 200 MP vs 50 MP
  • 150% higher Front camera: 50 MP vs 20 MP

Display

Display comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
Screen size6.83 ″+1%6.78 ″
Panel typeAMOLEDLTPO AMOLED
Resolution1280x27721260x2800
Pixel density447 ppi452 ppi+1%
Refresh rate165 Hz+15%144 Hz
Peak brightness3,500 nits—
Screen-to-body90.3 %91.1 %+1%

Performance

Performance comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
ChipsetSnapdragon 8 EliteMediaTek Dimensity 9500
RAM (max)16 GB16 GB
Storage options256/512GB256/512GB/1TB
Storage typeUFS 4.1UFS 4.1

Camera

Camera comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
Main camera50 MP200 MP+300%
Main aperturef/1.7f/1.68
Ultra-wide8 MP50 MP+525%
Telephoto—50 MP
Optical zoom—3 x
Max video8K@30fps4K@120fps
Front camera20 MP50 MP+150%
OISYesYes

Battery

Battery comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
Capacity8,550 mAh+20%7,100 mAh
Wired charging100 W+11%90 W
Wireless charging—40 W

Design

Design comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
Weight227 g217 g+4%
Thickness8.2 mm8 mm+2%
IP ratingIP68/IP69IP68/IP69
Frame materialAluminumAluminum

Connectivity

Connectivity comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
5GYesYes
Wi-FiWi-Fi 7Wi-Fi 7
Bluetooth5.45.4
NFCYesYes
USBUSB-CUSB-C 3.2
eSIMNoYes

Software

Software comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
OS at launchAndroid 16 (HyperOS 3)Android 16 (OriginOS 6)
OS update pledge—5 years

Audio

Audio comparison: REDMI K90 Ultra versus Vivo X300s
SpecREDMI K90 UltraVivo X300s
Stereo speakersYesYes
3.5mm jackNoNo

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