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Realme Q3 5G vs Xiaomi 12X

What Q3 5G does better (5) and where 12X wins (19) — every spec side by side.

Realme Q3 5G
Realme · 2021Q3 5G
6.5Score
5 advantages≈ $180
vs
Xiaomi 12X
Xiaomi · 202112X
8.2Score
19 advantages≈ $190
Higher score
5.8Display7.5
6.5Camera9.2
5.5Battery5.5
4.7Features8.1
Dimensions

Size comparison

Q3 5G12X
74.8 × 162.58.869.9 × 152.78.2
Q3 5G12XDifference
Height162.5 mm152.7 mm+9.8 mm
Width74.8 mm69.9 mm+4.9 mm
Thickness8.8 mm8.2 mm+0.6 mm
Weight189 g176 g+13 g

Drawn to the same scale from the official dimensions (front and side).

Why is Q3 5G better than 12X?

  1. Battery capacity5,000 mAh vs 4,500 mAh+11%
  2. Memory card slotYes · 12X: No
  3. 3.5 mm headphone jackYes · 12X: No
  4. Screen size6.5″ vs 6.3″+4%
  5. Main camera aperturef/1.8 vs f/1.9+6%

Why is 12X better than Q3 5G?

  1. Wired charging30 W vs 67 W2.2×
  2. RAM8 GB vs 12 GB+50%
  3. OLED panelNo · Q3 5G: Yes
  4. Storage (max)128 GB vs 256 GB2×
  5. Optical stabilisationNo · Q3 5G: Yes
  6. Telephoto cameraNo · Q3 5G: Yes
  7. NFCNo · Q3 5G: Yes
  8. Stereo speakersNo · Q3 5G: Yes
  9. Peak brightness600 nits vs 1,100 nits+83%
  10. CPU frequency2.2 GHz vs 3.2 GHz+45%
  11. Main camera48 MP vs 50 MP+4%
  12. Max video4K vs 8K
Specifications

Side by side

Realme Q3 5GRealme Q3 5G≈ $1806.5
Xiaomi 12XXiaomi 12X≈ $1908.2
Design
Weight189 g176 g
Thickness8.8 mm8.2 mm
Height162.5 mm152.7 mm
Width74.8 mm69.9 mm
Back—Glass
Glass protection—Corning Gorilla Glass Victus
ColoursBlack, SilverGray, Blue, Purple
Display
Screen size6.5″6.3″
PanelIPS LCDAMOLED
OLED panelNoYes
Resolution (width)1,080 px1,080 px
Resolution (height)2,400 px2,400 px
Pixel density405 ppi419 ppi
Refresh rate120 Hz120 Hz
Peak brightness600 nits1,100 nits
Measured brightness—923 nits
Screen-to-body ratio83.9%89.2%
HDR—Yes
Performance
ChipsetQualcomm SM7225 Snapdragon 750G 5GQualcomm SM8250-AC Snapdragon 870 5G
Chip makerQualcommQualcomm
Process8 nm7 nm
CPU cores88
CPU frequency2.2 GHz3.2 GHz
GPUAdreno 619Adreno 650
AnTuTu score—598,003
Geekbench 6 (multi-core)—3,168
3DMark Wild Life Extreme—1,216
Memory
RAM8 GB12 GB
Storage (max)128 GB256 GB
Storage (base)128 GB128 GB
Storage type—UFS 3.1
Memory card slotYesNo
Camera
Main camera48 MP50 MP
Main camera aperturef/1.8f/1.9
Main sensor size—1/1.56"
Rear cameras22
Optical stabilisationNoYes
Ultra-wide cameraYesYes
Telephoto cameraNoYes
Optical zoom—2.1×
Max video4K8K
4K video frame rate30 fps60 fps
Selfie camera16 MP32 MP
4K selfie videoNoNo
Battery
Battery capacity5,000 mAh4,500 mAh
Battery type—Li-Po
Wired charging30 W67 W
Charged in 30 min—77%
Wireless chargingNoNo
Connectivity
5GYesYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standard—Wi-Fi 5
Bluetooth5.15.1
NFCNoYes
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Infrared port—Yes
Dual-band GPS—Yes
Satellite navigationGLONASS, GALILEO, BDS, QZSSGLONASS, GALILEO, BDS, QZSS, NavIC
Features
Stereo speakersNoYes
3.5 mm headphone jackYesNo
Loudspeaker loudness—-25.6 LUFS
Fingerprint sensorSideUnder display
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, proximity, gyro, compass
SAR (head)—0.59 W/kg
Software
OS at launchAndroid 11Android 11
PlatformAndroidAndroid
Interface—MIUI 13
To compare: 0up to 4 models
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