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InnoReviews

realme C75x vs REDMI K90 Ultra

realme C75x
36Inno Score
VS
WINNER
REDMI K90 Ultra
69.1Inno Score
28.9Performance64.4
39.6Display78.7
29Camera43.4
58.1Battery83.2
20Features86.7
2 spec wins — realme C75x11 spec wins — REDMI K90 Ultra

InnoReviews verdict

REDMI K90 Ultra wins this phone face-off, 69.1 to 36, pulling ahead mainly in features (+67) and display (+39). realme C75x still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the realme C75x

  • 14% lower weight: 196 g vs 227 g

Reasons to pick the REDMI K90 Ultra

  • Stronger performance score: 64 vs 29
  • Stronger display score: 79 vs 40
  • Stronger camera score: 43 vs 29
  • Stronger battery score: 83 vs 58
  • Stronger features score: 87 vs 20

Display

Display comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
Screen size6.67 ″6.83 ″+2%
Panel typeIPS LCDAMOLED
Resolution720x16041280x2772
Pixel density264 ppi447 ppi+69%
Refresh rate120 Hz165 Hz+38%
Peak brightness625 nits3,500 nits+460%
Screen-to-body84.9 %90.3 %+6%

Performance

Performance comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
ChipsetMediaTek Helio G81 UltraSnapdragon 8 Elite
RAM (max)8 GB16 GB+100%
Storage options128/256GB256/512GB
Storage type—UFS 4.1

Camera

Camera comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
Main camera50 MP50 MP
Main aperturef/1.8f/1.7
Ultra-wide—8 MP
Max video1080p@30fps8K@30fps
Front camera5 MP20 MP+300%
OIS—Yes

Battery

Battery comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
Capacity5,600 mAh8,550 mAh+53%
Wired charging45 W100 W+122%

Design

Design comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
Weight196 g+14%227 g
Thickness8 mm+3%8.2 mm
IP ratingIP66/IP68/IP69IP68/IP69
Frame material—Aluminum

Connectivity

Connectivity comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
5GNoYes
Wi-FiWi-Fi 5Wi-Fi 7
Bluetooth5.05.4
NFCNoYes
USBUSB Type-CUSB-C
eSIM—No

Software

Software comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
OS at launchAndroid 15Android 16 (HyperOS 3)

Audio

Audio comparison: realme C75x versus REDMI K90 Ultra
Specrealme C75xREDMI K90 Ultra
Stereo speakers—Yes
3.5mm jackNoNo

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