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OPPO K9s vs Xiaomi Redmi K40 Pro

What K9s does better (4) and where Redmi K40 Pro wins (14) — every spec side by side.

OPPO K9s
OPPO · 2021K9s
6.9Score
4 advantages
vs
Xiaomi Redmi K40 Pro
Xiaomi · 2021Redmi K40 Pro
7.8Score
14 advantages≈ $390
Higher score
6.1Display7.9
7.2Camera8.2
5.5Battery4.2
5.8Features7.0
Dimensions

Size comparison

K9sRedmi K40 Pro
75.9 × 164.48.576.4 × 163.77.8
K9sRedmi K40 ProDifference
Height164.4 mm163.7 mm+0.7 mm
Width75.9 mm76.4 mm−0.5 mm
Thickness8.5 mm7.8 mm+0.7 mm
Weight199 g196 g+3 g

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

Why is K9s better than Redmi K40 Pro?

  1. Battery capacity5,000 mAh vs 4,520 mAh+11%
  2. Memory card slotYes · Redmi K40 Pro: No
  3. 3.5 mm headphone jackYes · Redmi K40 Pro: No
  4. Main camera aperturef/1.7 vs f/1.9+12%

Why is Redmi K40 Pro better than K9s?

  1. Peak brightness600 nits vs 1,300 nits2.2×
  2. RAM8 GB vs 12 GB+50%
  3. OLED panelNo · K9s: Yes
  4. NFCNo · K9s: Yes
  5. Stereo speakersNo · K9s: Yes
  6. Wired charging30 W vs 33 W+10%
  7. Max video4K vs 8K
  8. 4K video frame rate30 fps vs 60 fps2×
  9. CPU frequency2.4 GHz vs 2.84 GHz+18%
  10. Selfie camera16 MP vs 20 MP+25%
  11. Process6 nm vs 5 nm+20%
  12. Thickness8.5 mm vs 7.8 mm+9%
Specifications

Side by side

Design
Weight199 g196 g
Thickness8.5 mm7.8 mm
Height164.4 mm163.7 mm
Width75.9 mm76.4 mm
Ingress protection—IP53
Water resistance (IPx)—IPx3
Glass protectionPanda GlassCorning Gorilla Glass 5
ColoursBlack, Silver, AuroraBlack, White, Aurora
Display
Screen size6.6″6.7″
PanelIPS LCDSuper AMOLED
OLED panelNoYes
Resolution (width)1,080 px1,080 px
Resolution (height)2,412 px2,400 px
Pixel density401 ppi395 ppi
Refresh rate120 Hz120 Hz
Peak brightness600 nits1,300 nits
Screen-to-body ratio83.7%85.9%
HDR—Yes
Performance
ChipsetQualcomm SM7325 Snapdragon 778G 5GQualcomm SM8350 Snapdragon 888 5G
Chip makerQualcommQualcomm
Process6 nm5 nm
CPU cores88
CPU frequency2.4 GHz2.84 GHz
GPUAdreno 642LAdreno 660
Memory
RAM8 GB12 GB
Storage (max)256 GB256 GB
Storage (base)128 GB128 GB
Storage typeUFS 2.2UFS 3.1
Memory card slotYesNo
Camera
Main camera64 MP64 MP
Main camera aperturef/1.7f/1.9
Main sensor size—1/1.7"
Rear cameras22
Optical stabilisationNoNo
Ultra-wide cameraYesYes
Telephoto cameraNoNo
Max video4K8K
4K video frame rate30 fps60 fps
Selfie camera16 MP20 MP
4K selfie videoNoNo
Battery
Battery capacity5,000 mAh4,520 mAh
Battery typeLi-PoLi-Po
Wired charging30 W33 W
Charged in 30 min—58%
Wireless chargingNoNo
Connectivity
5GYesYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 6Wi-Fi 6E
Bluetooth5.25.2
NFCNoYes
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Dual-band GPS—Yes
Satellite navigationGLONASS, GALILEO, BDS, QZSSGLONASS, GALILEO, BDS, QZSS, NavIC
Features
Stereo speakersNoYes
3.5 mm headphone jackYesNo
Fingerprint sensorSideSide
Barometer—Yes
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Software
OS at launchAndroid 11Android 11
PlatformAndroidAndroid
InterfaceColorOS 11.2MIUI 12
To compare: 0up to 4 models
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