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- K9 vs Redmi K40 Gaming
OPPO K9 vs Xiaomi Redmi K40 Gaming
What K9 does better (7) and where Redmi K40 Gaming wins (11) — every spec side by side.
vs
6.8Display7.2
7.5Camera7.2
4.8Battery8.0
5.0Features6.9
Dimensions
Size comparison
K9Redmi K40 Gaming
| K9 | Redmi K40 Gaming | Difference | |
|---|---|---|---|
| Height | 159.1 mm | 161.9 mm | −2.8 mm |
| Width | 73.4 mm | 76.9 mm | −3.5 mm |
| Thickness | 7.9 mm | 8.3 mm | −0.4 mm |
| Weight | 172 g | 205 g | −33 g |
Drawn to the same scale from the official dimensions (front and side).
Why is K9 better than Redmi K40 Gaming?
- Peak brightness750 nits vs 500 nits+50%
- Selfie camera32 MP vs 16 MP2×
- 3.5 mm headphone jackYes · Redmi K40 Gaming: No
- Weight172 g vs 205 g+19%
- Pixel density409 ppi vs 395 ppi+4%
- Charged in 30 min86% vs 71%+21%
- Thickness7.9 mm vs 8.3 mm+5%
Why is Redmi K40 Gaming better than K9?
- RAM8 GB vs 12 GB+50%
- NFCNo · K9: Yes
- Stereo speakersNo · K9: Yes
- Battery capacity4,300 mAh vs 5,065 mAh+18%
- Refresh rate90 Hz vs 120 Hz+33%
- Wired charging65 W vs 67 W+3%
- CPU frequency2.8 GHz vs 3 GHz+7%
- Screen size6.4″ vs 6.7″+4%
- Wi-Fi standardWi-Fi 5 vs Wi-Fi 6+20%
- Process7 nm vs 6 nm+17%
- Bluetooth5 vs 5.2+4%
Specifications
Side by side
| Design | ||
| Weight | 172 g | 205 g |
| Thickness | 7.9 mm | 8.3 mm |
| Height | 159.1 mm | 161.9 mm |
| Width | 73.4 mm | 76.9 mm |
| Back | — | Glass |
| Ingress protection | — | IP53 |
| Water resistance (IPx) | — | IPx3 |
| Glass protection | — | Corning Gorilla Glass 5 |
| Colours | Black, Aurora | Black, Gray, Silver, Bruce Lee Yellow |
| Display | ||
| Screen size | 6.4″ | 6.7″ |
| Panel | Super AMOLED | OLED |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,400 px | 2,400 px |
| Pixel density | 409 ppi | 395 ppi |
| Refresh rate | 90 Hz | 120 Hz |
| Peak brightness | 750 nits | 500 nits |
| Screen-to-body ratio | 85.5% | 86.3% |
| HDR | — | Yes |
| Performance | ||
| Chipset | Qualcomm SM7250-AC Snapdragon 768G 5G | Mediatek Dimensity 1200 |
| Chip maker | Qualcomm | MediaTek |
| Process | 7 nm | 6 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.8 GHz | 3 GHz |
| GPU | Adreno 620 | Mali-G77 MC9 |
| Memory | ||
| RAM | 8 GB | 12 GB |
| Storage (max) | 256 GB | 256 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | — | UFS 3.1 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 64 MP | 64 MP |
| Main camera aperture | f/1.7 | f/1.7 |
| Main sensor size | — | 1/2.0" |
| Rear cameras | 2 | 2 |
| Optical stabilisation | No | No |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | No | No |
| Max video | 4K | 4K |
| 4K video frame rate | 30 fps | 30 fps |
| Selfie camera | 32 MP | 16 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,300 mAh | 5,065 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 65 W | 67 W |
| Charged in 30 min | 86% | 71% |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 6 |
| Bluetooth | 5 | 5.2 |
| NFC | No | Yes |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Dual-band GPS | — | Yes |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS, NavIC |
| Features | ||
| Stereo speakers | No | Yes |
| 3.5 mm headphone jack | Yes | No |
| Fingerprint sensor | Under display | Side |
| Barometer | — | Yes |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, gyro, compass, barometer |
| Software | ||
| OS at launch | Android 11 | Android 11 |
| Platform | Android | Android |
| Interface | ColorOS 11.1 | MIUI 12.5 |
