Side-by-side technical data
Oppo K9 vs Xiaomi Redmi K40
Comparison between Oppo K9 and Xiaomi Redmi K40: camera, battery, fast charging, display, performance and colors, side by side. More phones from Oppo and Xiaomi.
The verdict
Neither runs away with it: each wins something.
| Category | K9 | Redmi K40 |
|---|---|---|
| Design & display | 7.3 | 7.4 |
| Performance & hardware | 5.3 | 6.1 |
| Camera | 5.8 | 4.9 |
| Connectivity | 6.0 | 6.9 |
| Battery & charging | 5.5 | 4.9 |
Which one is for you?
Oppo K9, if you care about…
- Display Pixel Density
- 409 ppi
- against 395 ppi
- Weight
- 172 g
- against 196 g
- Fast Charge Power
- 65 W
- against 33 W
- Battery Features
- Fast Charging, Reverse Charging, Non-Removable, Rechargeable, Battery Level Indicator
- against Non-Removable, Rechargeable, Fast Charging, Battery Level Indicator
Xiaomi Redmi K40, if you care about…
- Battery Capacity
- 4,520 mAh
- against 4,300 mAh
- AnTuTu Score
- 802,870
- against 449,750
- RAM Capacity
- 12 GB
- against 8 GB
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
- against Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 802.11a/b/g
Specification comparison
Performance
| Specification | K9 | Redmi K40 |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 768G | Qualcomm Snapdragon 870 |
| Processor Process Size | 7 nm | 7 nm |
| Graphics GPU | Qualcomm Adreno 620 | Qualcomm Adreno 650 |
| Storage Type | — | UFS 3.1 |
| Maximum CPU Clock | 2.8 GHz | 3.2 GHz Best value |
| Maximum Storage Capacity | 256 GB | 256 GB |
| AnTuTu Score | 449,750 | 802,870 Best value |
| Geekbench 6 Single-Core | — | 1,187 |
| Geekbench 6 Multi-Core | — | 3,068 |
| CPU Description | Octa-core CPU with one 2.8 GHz core, one 2.4 GHz core, and six 1.8 GHz cores. | Octa-core processor with 1x3.2 GHz, 3x2.42 GHz, and 4x1.80 GHz cores |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 8 GB | 12 GB Best value |
| RAM Type | LPDDR4X | LPDDR5 Best value |
| AnTuTu version | v9 | v10 |
Design
| Specification | K9 | Redmi K40 |
|---|---|---|
| Body Colors | Black, Aurora | Black, White, Blue, Aurora, Multicolor |
| Body Thickness | 7.9 mm | 7.8 mm Best value |
| Body Width | 73.4 mm | 76.4 mm |
| Body Height | 159.1 mm | 163.7 mm |
| Weight | 172 g Best value | 196 g |
| Usable Surface | 85.5 % | 85.9 % Best value |
| Body Materials | Plastic | Plastic, Glass, Splash Resistant |
| Resistance Features | — | IP53 |
Battery
| Specification | K9 | Redmi K40 |
|---|---|---|
| Battery Capacity | 4,300 mAh | 4,520 mAh Best value |
| Battery Type | Li-Polymer | Li-Polymer |
| Fast Charge Power | 65 W Best value | 33 W |
| Battery Features | Fast Charging, Reverse Charging, Non-Removable, Rechargeable, Battery Level Indicator Best value | Non-Removable, Rechargeable, Fast Charging, Battery Level Indicator |
Display
| Specification | K9 | Redmi K40 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | Super AMOLED | Super AMOLED |
| Peak Display Brightness | 750 nits | 1,300 nits Best value |
| Display Diagonal | 6.43″ | 6.67″ Best value |
| Display Horizontal Resolution | 1,080 px | 1,080 px |
| Display Vertical Resolution | 2,400 px | 2,400 px |
| Display Pixel Density | 409 ppi Best value | 395 ppi |
| Display Refresh Rate | 90 Hz | 120 Hz Best value |
| Touch Sampling Rate | 180 Hz | 360 Hz Best value |
| Display Contrast Ratio | 1,000,000 :1 | 5,000,000 :1 Best value |
| Display Features | Hole-Punch Notch, Capacitive Touch, Multi-Touch, DCI-P3, Full sRGB, Scratch Resistant, Curved Glass, Frameless | Gorilla Glass 5, HDR10+, Hole-Punch Notch, DCI-P3, Capacitive Touch, Multi-Touch, Frameless, Scratch Resistant, Always-On Display |
Sensors
| Specification | K9 | Redmi K40 |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Side |
Sensor
| Specification | K9 | Redmi K40 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Gravity Sensor, Light Sensor, Cooling System | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, Cooling System, Virtual Proximity Sensing |
Software
| Specification | K9 | Redmi K40 |
|---|---|---|
| Operating System | Android 11 | Android 11 |
| OS Family | Android | Android |
| OS Version | 11 | 11 |
Connectivity
| Specification | K9 | Redmi K40 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby, Dual SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 3G UMTS 800, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 3G UMTS B1, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B8, 4G LTE B28A, 4G LTE B28B, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 5G NR n1, 5G NR n3, 5G NR n28a, 5G NR n28b, 5G NR n41, 5G NR n77, 5G NR n78 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B3, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 3G UMTS 1700 AWS, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B18, 4G LTE B19, 4G LTE B26, LTE B28, 4G LTE B28A, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 5G NR n1, 5G NR n3, 5G NR n28a, 5G NR n41, 5G NR n77, 5G NR n78, 5G NR n79 |
| Cellular Technologies | GSM, CDMA, HSPA, CDMA2000, LTE, 5G | GSM, CDMA, HSPA, UMTS, CDMA2000, LTE, 5G |
| Wi-Fi Standards | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 802.11a/b/g | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax) Best value |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO |
| Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.1 |
| Bluetooth Profiles | A2DP, LE, aptX HD | A2DP, LE |
| Navigation Systems | GPS, A-GPS, GLONASS, Galileo, BeiDou, QZSS | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value |
| Connectivity Features | 3.5 mm Audio Jack, USB Charging, USB Mass Storage, USB OTG, USB Type-C, Computer Sync, OTA Sync, Tethering, VoLTE | Infrared, NFC, USB Type-C, USB OTG, Computer Sync, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage |
| USB Version | USB 2.0 | USB 2.0 |
| Max. download speed | 3,700 Mbps | 7,500 Mbps Best value |
| Max. upload speed | 1,600 Mbps | 3,000 Mbps Best value |
Audio
| Specification | K9 | Redmi K40 |
|---|---|---|
| Microphone Count | 1 | 2 Best value |
| Audio Features | A2DP, LE, aptX HD | Stereo Speakers, Hi-Res Audio, A2DP, LE, Dolby Atmos |
Technical
| Specification | K9 | Redmi K40 |
|---|---|---|
| Model numbers | PEXM00 | M2012K11AC |
