Side-by-side technical data
Xiaomi Redmi 8A Dual vs Xiaomi Redmi K90 Max
Comparison between Xiaomi Redmi 8A Dual and Xiaomi Redmi K90 Max: camera, battery, fast charging, display, performance and colors, side by side. More phones from Xiaomi.
NeoTeo's verdict
Which of the two is the better buy
The Xiaomi Redmi K90 Max is the stronger all-round choice for a modern display, performance, and a large battery; the Redmi 8A Dual keeps practical advantages: it weighs less and supports expandable storage and Google services. The overall gap is wide: 8.3 to 3.6.
The K90 Max’s 6.83-inch AMOLED screen outclasses the 8A Dual’s 6.22-inch IPS LCD, with 3,500 nits versus 400 nits and 447 ppi versus 270 ppi. There is also a leap from the Qualcomm Snapdragon 439 to the MediaTek Dimensity 9500; the K90 Max pairs 16 GB of RAM with UFS 4.1 storage, versus 3 GB and eMMC 5.1.
The K90 Max combines a 50 MP main camera with optical image stabilization and an ultrawide camera; the 8A Dual has 13 MP and no ultrawide. Its 8,550 mAh battery and 100 W charging beat the 8A Dual’s 5,000 mAh and 18 W. The K90 Max adds 5G, NFC, and Android 16 but lacks Google services; the 8A Dual runs Android 9 and includes them.
Xiaomi Redmi 8A Dual
The Xiaomi Redmi 8A Dual is the better buy for anyone who needs Google services and expandable storage.
Xiaomi Redmi K90 Max
The Xiaomi Redmi K90 Max is the better buy for anyone prioritizing a 3,500-nit AMOLED display, 5G, and 100 W charging.
The verdict
Your pick: Xiaomi Redmi K90 Max, ahead on Design & display, Performance & hardware, Camera, Connectivity and Battery & charging.
| Category | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Design & display | 4.4 | 8.6 |
| Performance & hardware | 1.9 | 9.3 |
| Camera | 3.0 | 7.7 |
| Connectivity | 4.0 | 7.7 |
| Battery & charging | 6.0 | 8.3 |
Which one is for you?
Xiaomi Redmi 8A Dual, if you care about…
- Weight
- 188 g
- against 227 g
- Expandable Storage
- Yes
- against No
- Google Services
- Yes
- against No
Xiaomi Redmi K90 Max, if you care about…
- Battery Capacity
- 8,550 mAh
- against 5,000 mAh
- AnTuTu Score
- 3,485,900
- against 118,350
- RAM Capacity
- 16 GB
- against 3 GB
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 7 (802.11be), Wi-Fi 802.11a/b/g
- against Wi-Fi 802.11 b/g/n
Specification comparison
Performance
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 439 | MediaTek Dimensity 9500 |
| Processor Process Size | 12 nm | 3 nm Best value |
| Graphics GPU | Qualcomm Adreno 505 | Mali-G1 Ultra MC12 |
| Storage Type | eMMC 5.1 | UFS 4.1 Best value |
| Maximum CPU Clock | 1.95 GHz | 4.21 GHz Best value |
| Maximum Storage Capacity | 64 GB | 1 TB Best value |
| AnTuTu Score | 118,350 | 3,485,900 Best value |
| Geekbench 6 Single-Core | — | 3,781 |
| Geekbench 6 Multi-Core | — | 12,189 |
| CPU Description | Octa-core: 4 × Cortex-A53 at 1.95 GHz and 4 × Cortex-A53 at 1.45 GHz. | Octa-core CPU with 1×4.21 GHz C1-Ultra, 3×3.5 GHz C1-Premium, and 4×2.7 GHz C1-Pro |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 3 GB | 16 GB Best value |
| RAM Type | LPDDR3 | LPDDR5X Best value |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | v9 | v11 |
Design
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Body Colors | White, Blue, Grey | Silver, Blue, Black, Grey |
| Body Thickness | 9.4 mm | 8.2 mm Best value |
| Body Width | 75.4 mm | 77.9 mm |
| Body Height | 156.5 mm | 162.9 mm |
| Weight | 188 g Best value | 227 g |
| Usable Surface | 81.8 % | 90.3 % Best value |
| Body Materials | Glass, Plastic, P2i Nano Coating | Glass, Aluminium Alloy, Plastic Best value |
| Resistance Features | Water Resistant | IP68, IP69 |
| Waterproof Depth | — | 1.5 m |
Battery
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Battery Capacity | 5,000 mAh | 8,550 mAh Best value |
| Battery Type | Li-Polymer | Si-Carbon Li-Ion Best value |
| Fast Charge Power | 18 W | 100 W Best value |
| Battery Features | Fast Charging, Reverse Charging, Non-Removable | Non-Removable, Rechargeable, Fast Charging, Reverse Charging, Reverse Wireless Charging, Battery Level Indicator Best value |
| Reverse wireless charging power | — | 22.5 W |
Display
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Display Aspect Ratio | 19:9 | 19.5:9 |
| Display Technology | IPS LCD | AMOLED Best value |
| Peak Display Brightness | 400 nits | 3,500 nits Best value |
| Display Diagonal | 6.22″ | 6.83″ Best value |
| Display Horizontal Resolution | 720 px | 1,280 px Best value |
| Display Vertical Resolution | 1,520 px | 2,772 px Best value |
| Display Pixel Density | 270 ppi | 447 ppi Best value |
| Display Refresh Rate | — | 165 Hz |
| Touch Sampling Rate | — | 480 Hz |
| Display Contrast Ratio | 1,500 :1 | 8,000,000 :1 Best value |
| Display Features | Gorilla Glass 5, IPS LCD, Water Drop Notch, Capacitive Touch, Multi-Touch | Hole-Punch Notch, HDR10+, Dolby Vision, Always-On Display, Capacitive Touch, Multi-Touch, Scratch Resistant, SGS Certified, TÜV Rheinland Low Blue Light, TÜV Rheinland Flicker-Free Certified, TÜV Rheinland Eye Comfort Certification, 3840Hz PWM, DCI-P3, Frameless |
Sensors
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Fingerprint Sensor Placement | — | Under Display |
Sensor
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Sensor Features | Accelerometer, Compass, Light Sensor, Proximity Sensor | Fingerprint Sensor, Accelerometer, Compass, Gyroscope, Light Sensor, Proximity Sensor, Ultrasonic Proximity Sensor, Virtual Proximity Sensing, Cooling System |
Software
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Operating System | Android 9 | Android 16 |
| OS Family | Android | Android |
| OS Version | 9 | 16 Best value |
| Google Services | Yes Best value | No |
Connectivity
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA BC1, 2G GSM B2, 2G GSM B3, 2G GSM B5, 2G GSM B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B5, 3G UMTS B8, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B19, LTE B28, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 4G LTE B43, 4G LTE B48, 4G LTE B66, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n7, 5G NR n8, 5G NR n28, 5G NR n34, 5G NR n38, 5G NR n39, 5G NR n40, 5G NR n41, 5G NR n48, 5G NR n77, 5G NR n78, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 4G LTE B28A, 5G NR n28a, 5G NR n66 |
| Cellular Technologies | GSM, HSPA, LTE | GSM, HSPA, LTE, 5G Best value |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 7 (802.11be), Wi-Fi 802.11a/b/g Best value |
| Wi-Fi Features | Wi-Fi Direct, Wi-Fi Hotspot, Wi-Fi Display, Wi-Fi 802.11 b/g/n | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 5.4 Best value |
| Bluetooth Profiles | A2DP, LE | A2DP, LE, Auracast, ASHA, MIHC |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, USB Charging, USB Mass Storage, USB OTG, USB Host, USB Type-C, Computer Sync, OTA Sync, Tethering, VoLTE | Infrared, NFC, USB Type-C, USB Charging, USB Mass Storage, USB Host 2.0, USB OTG, Computer Sync, OTA Sync, Tethering |
| USB Version | USB 2.0 | USB 3.2 Best value |
| SAR American Head | 0.34 W/kg | — |
| SAR American Body | 1 W/kg | — |
| Max. download speed | — | 10,700 Mbps |
Audio
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Audio Features | A2DP, LE, Loudspeaker | Stereo Speakers, Dolby Atmos, Noise-Cancellation Microphone, Hi-Res Audio, Hi-Res Wireless Audio, A2DP, LE, LHDC 5, Auracast, ASHA, MIHC Best value |
Technical
| Specification | Redmi 8A Dual | Redmi K90 Max |
|---|---|---|
| Model numbers | M2001C3K3I | — |
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