Home > Smartphone comparison > Redmi K40 Gaming vs Poco X3 Pro – which one to choose?

Xiaomi Redmi K40 Gaming vs Poco X3 Pro

Here we compared two mid-range smartphones: the 6.67-inch Xiaomi Redmi K40 Gaming (with MediaTek Dimensity 1200 5G) that was released on April 27, 2021, against the Xiaomi Poco X3 Pro, which is powered by Qualcomm Snapdragon 860 and came out 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Redmi K40 Gaming
  • Compatible with the latest Wi-Fi 6 wireless networks
  • Newer Bluetooth version (v5.2)
  • 28% better performance in AnTuTu Benchmark (628K versus 490K)
  • Uses a faster type of memory: LPDDR5 2750 MHz
  • OLED display (versus competitor's IPS LCD)
  • Supports Dolby Atmos sound technology
Reasons to consider the Xiaomi Poco X3 Pro
  • Expandable storage via MicroSD card up to 512GB
  • Delivers 8% higher maximum brightness (531 against 492 nits)
  • Includes a 3.5 mm headphone audio jack port

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

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type OLED IPS LCD
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
HDR support Yes, HDR10+ Yes, HDR10
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 6
Screen-to-body ratio 86.3% 84.6%
Display features - DCI-P3
- Always-On Display
- DC Dimming
-
Display tests
RGB color space - 95.1%
PWM - 2404 Hz
Response time - 37.4 ms
Contrast - 995:1
Max. Brightness
492 nits
531 nits
Sources: NotebookCheck [1]

Design and build

Height 161.9 mm (6.37 inches) 165.3 mm (6.51 inches)
Width 76.9 mm (3.03 inches) 76.8 mm (3.02 inches)
Thickness 8.3 mm (0.33 inches) 9.4 mm (0.37 inches)
Weight 205 gramm (7.23 oz) 215 gramm (7.58 oz)
Waterproof IP53 IP53
Rear material Glass Plastic
Frame material - Plastic
Colors Black, Silver, Yellow Black, Gold, Blue
Fingerprint scanner Yes, in home button Yes, in home button
Screen-to-body ratio
86.3%
84.6%

Performance

Tests of Xiaomi Redmi K40 Gaming and Xiaomi Poco X3 Pro in the benchmarks
SoC
Chipset MediaTek Dimensity 1200 5G Qualcomm Snapdragon 860
Max. clock 3000 MHz 2960 MHz
CPU cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4 cores at 2 GHz: Cortex-A55
- 3 cores at 2.6 GHz: Cortex-A78
- 1 core at 3 GHz: Cortex-A78
- 4 cores at 1.8 GHz: Cortex-A55 (Kryo 485 Silver)
- 3 cores at 2.42 GHz: Cortex-A76 (Kryo 485 Gold)
- 1 core at 2.96 GHz: Cortex-A76 (Kryo 485 Prime)
Lithography process 6 nanometers 7 nanometers
Graphics Mali-G77 MC9 Adreno 640
GPU clock 850 MHz 675 MHz
Memory
RAM size 6, 8, 12 GB 6, 8 GB
Memory type LPDDR5 LPDDR4X
Memory clock 2750 MHz 2133 MHz
Channels 2 2
Storage
Storage size 128, 256 GB 128, 256 GB
Storage type UFS 3.1 UFS 3.1
Memory card No MicroSD
Memory card max. size - Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 8
628655
490763
AnTuTu Benchmark 8 Ranking List (32nd and 84th place)

Software

Operating system Android 11 Android 11
ROM MIUI 12 MIUI 12
OS size - 21 GB

Battery

Specifications
Capacity 5065 mAh 5160 mAh
Charge power 67 W 33 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (100% in 42 min) Yes (55% in 30 min)
Full charging time 0:42 hr 1:15 hr

Battery life tests

Web browsing (Wi-Fi)
Watching videos (Player)
Talk (3G)

Camera

Specs and camera test of smartphones
Main camera
Matrix 64 megapixels 48 megapixels
Image resolution 9248 x 6936 8000 x 6000
Zoom Digital Digital
Flash Dual LED Dual 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 (720p)
Angle of widest lens 120° 119°
Lenses 3 (64 MP + 8 MP + 2 MP) 4 (48 MP + 8 MP + 2 MP + 2 MP)
Wide (main) lens - 64 MP
- Aperture: f/1.7
- Focal length: 26 mm
- Pixel size: 0.7 micron
- Sensor: 1/2.0", Omnivision OV64B
- 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
Macro lens - 2 MP
- Aperture: f/2.4
- 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
Depth lens - - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 16 megapixels 20 megapixels
Image resolution 4920 x 3264 5480 x 3648
Aperture f/2.5 f/2.2
Focal length - 25 mm
Pixel size - 0.8 microns
Sensor type CMOS CMOS
Sensor size - 1/3.4"
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
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 5.2 5
Bluetooth features LE, HID, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- USB-Host mode
GPS GPS, GLONASS, Beidou, Galileo, NAVIC GPS, GLONASS, Beidou, Galileo
NFC* Yes Yes
Infrared port Yes Yes
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No Yes
LTE Cat* 18 20
5G support Yes No

Sound

Speakers Stereo Stereo
Headphone audio jack No Yes
FM radio No No
Dolby Atmos Yes No
Speakers test
Max. loudness

Other

Category Mid-range Mid-range
Announced April 2021 March 2021
Release date April 2021 April 2021
Launch price ~ 375 USD ~ 250 USD
Sensors - Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

These smartphones have a lot in common, but we would recommend the Xiaomi Redmi K40 Gaming. It has a better performance, connectivity, and sound.

Cast your vote

So, which phone would you choose?
25 (53.2%)
22 (46.8%)
Total votes: 47

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