Xiaomi Redmi K40 vs Poco F3
Here we compared two flagship smartphones: the 6.67-inch Xiaomi Redmi K40 (with Qualcomm Snapdragon 870 5G) that was released on February 25, 2021, against the Xiaomi Poco F3, which is powered by the same chip and came out 1 month after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Key differences
Reasons to consider the Xiaomi Poco F3
- More recent OS version: Android 13 versus 11
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Review
Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation
Value for money
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Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | AMOLED | AMOLED |
| Size | 6.67 inches | 6.67 inches |
| Resolution | 1080 x 2400 pixels | 1080 x 2400 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 395 ppi | 395 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | No | No |
| Max rated brightness | 500 nits | 700 nits |
| Max rated brightness in HDR | 1300 nits | 1300 nits |
| HDR support | Yes, HDR10+ | Yes, HDR10+ |
| Screen protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 |
| Screen-to-body ratio | 85.9% | 85.9% |
| Display features | - DCI-P3 - Always-On Display - DC Dimming |
- DCI-P3 - Always-On Display |
| RGB color space | - | 99.8% |
| PWM | - | 490 Hz |
| Response time | - | 3 ms |
| Contrast | - | ∞ Infinity |
Peak brightness test (auto)
Design and build
| Height | 163.7 mm (6.44 inches) | 163.7 mm (6.44 inches) |
| Width | 76.4 mm (3.01 inches) | 76.4 mm (3.01 inches) |
| Thickness | 7.8 mm (0.31 inches) | 7.8 mm (0.31 inches) |
| Weight | 196 g (6.91 oz) | 196 g (6.91 oz) |
| Waterproof | IP53 | IP53 |
| Advanced cooling | Vapor chamber | Vapor chamber |
| Rear material | Glass | Glass |
| Frame material | Plastic | Plastic |
| Colors | White, Black | White, Black, Blue |
| Fingerprint scanner | Yes, in home button | Yes, in home button |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 870 5G | Qualcomm Snapdragon 870 5G |
| Max clock | 3200 MHz | 3200 MHz |
| CPU cores | 8 (1 + 3 + 4) | 8 (1 + 3 + 4) |
| Architecture | - 4 cores at 1.8 GHz: Kryo 585 Silver (Cortex-A55) - 3 cores at 2.42 GHz: Kryo 585 Gold (Cortex-A77) - 1 core at 3.2 GHz: Kryo 585 Prime (Cortex-A77) |
- 4 cores at 1.8 GHz: Kryo 585 Silver (Cortex-A55) - 3 cores at 2.42 GHz: Kryo 585 Gold (Cortex-A77) - 1 core at 3.2 GHz: Kryo 585 Prime (Cortex-A77) |
| L3 cache | 4 MB | 4 MB |
| Lithography process | 7 nanometers | 7 nanometers |
| Graphics | Adreno 650 | Adreno 650 |
| GPU clock | 675 MHz | 675 MHz |
| FLOPS | ~1372 GFLOPS | ~1372 GFLOPS |
Benchmarks
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
| CPU | 197488 | 193188 |
| GPU | 242243 | 242401 |
| Memory | 106088 | 118444 |
| UX | 150139 | 145060 |
| Total score | 697583 | 701079 |
3DMark Wild Life Performance
| Max surface temperature | - | 39.6 °C |
| Stability | 93% | 90% |
| Graphics test | 25 FPS | 25 FPS |
| Graphics score | 4284 | 4296 |
PCMark 3.0
| Web score | 9662 | 8431 |
| Video editing | 7080 | 6154 |
| Photo editing | 30295 | 29105 |
| Data manipulation | 9303 | 8994 |
| Writing score | 14909 | 14107 |
Best Smartphones in AnTuTu Benchmark (179th and 174th place)
Memory
| RAM size | 6, 8, 12 GB | 6, 8 GB |
| Memory type | LPDDR5 | LPDDR5 |
| Memory clock | 2750 MHz | 2750 MHz |
| Channels | 4 | 4 |
| Storage size | 128, 256 GB | 128, 256 GB |
| Storage type | UFS 3.1 | UFS 3.1 |
| Memory card | No | No |
Software
| Operating system | Android 11 | Android 11 (Can be upgraded to Android 13) |
| ROM | MIUI 12.5 Enhanced | MIUI 14 |
| OS size | - | 21 GB |
Battery
| Capacity | 4520 mAh | 4520 mAh |
| Charge power | 33 W | 33 W |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | No | No |
| Fast charging | Yes (70% in 30 min) | Yes (67% in 30 min) |
| Full charging time | 0:52 hr | 0:56 hr |
| Web browsing | - | 11:06 hr |
| Watching video | - | 14:32 hr |
| Gaming | - | 05:39 hr |
| Standby | - | 83 hr |
General battery life
Camera
| Matrix | 48 megapixels | 48 megapixels |
| Image resolution | 8000 x 6000 | 8000 x 6000 |
| Zoom | Digital | Digital |
| Flash | LED | LED |
| Stabilization | Digital | Digital |
| 8K video recording | No | No |
| 4K video recording | Up to 30FPS | Up to 30FPS |
| 1080p video recording | Up to 60FPS | Up to 60FPS |
| Slow motion | 960 FPS (720p) | 960 FPS (1080p) |
| Angle of widest lens | 119° | 119° |
| Lenses | 3 (48 MP + 8 MP + 5 MP) | 3 (48 MP + 8 MP + 5 MP) |
| Wide (main) lens | - 48 MP - Aperture: f/1.8 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/2.0" (CMOS) - Phase autofocus |
- 48 MP - Aperture: f/1.8 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/2.0", Sony IMX582 (Exmor-RS CMOS) - Phase autofocus |
| Ultra-wide lens | - 8 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/4.0" (CMOS) |
- 8 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/4.0", Sony IMX355 (CMOS) |
| Macro lens | - 5 MP - Aperture: f/2.4 - Focal length: 50 mm - Pixel size: 1.12 micron - Sensor: 1/5.0" (CMOS) |
- 5 MP - Focal length: 50 mm - Pixel size: 1.75 micron - Sensor: 1/5.0", Samsung S5K5E8 (CMOS) - Phase autofocus |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode |
| Megapixels | 20 megapixels | 20 megapixels |
| Image resolution | 4608 x 3456 | 4608 x 3456 |
| Aperture | f/2.5 | f/2.45 |
| Focal length | 26 mm | 26 mm |
| Pixel size | 0.8 microns | 0.8 microns |
| Sensor type | CMOS | CMOS |
| Sensor size | 1/3.4" | 1/3.4" |
| Video resolution | 1080p (Full HD) at 30 FPS | 1080p (Full HD) at 60 FPS |
Connectivity
| Wi-Fi standard | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) | Wi-Fi 6 (802.11 a/b/g/n/ac/ax) |
| Wi-Fi features | - Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5.1 | 5.1 |
| Bluetooth features | LE, HID, A2DP | LE, HID, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | 2 | 2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode - OTG |
| GPS | GPS, GLONASS, Beidou, Galileo, NAVIC | GPS, GLONASS, Beidou, Galileo, NAVIC |
| NFC* | Yes | Yes |
| Infrared port | Yes | Yes |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | No |
| Hybrid slot | No | No |
| LTE Cat* | 20 | 20 |
| 5G support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| Headphone audio jack | No | No |
| FM radio | No | No |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | February 2021 | March 2021 |
| Release date | March 2021 | March 2021 |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the battery life is more important to you, then choose the Xiaomi Redmi K40. But if the software is more of a priority – go for the Xiaomi Poco F3.
Cast your vote
Total votes: 1025