Side-by-side technical data
Xiaomi Redmi K90 vs Xiaomi Redmi 8
Comparison between Xiaomi Redmi K90 and Xiaomi Redmi 8: 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 is the clear choice for a current phone: its 120Hz AMOLED display and Snapdragon 8 Elite platform set it apart from the 2019 Redmi 8. It also leads the overall score, 8.4 to 3.8.
The K90’s screen measures 6.59″ and reaches 3,500 nits, versus 6.22″ and 400 nits on the Redmi 8; resolution is 1,156 px × 2,510 px against 720 px × 1,520 px. It offers 16 GB of RAM and up to 1 TB of storage, compared with 4 GB and 64 GB. Its 7,100 mAh battery and 100W charging also top the Redmi 8’s 5,000 mAh and 18W.
For photos, the K90 has a 50 MP main camera with optical image stabilization, plus telephoto and ultrawide cameras; the Redmi 8 has a 12 MP main camera and lacks both extras. The K90 adds 5G, NFC and Wi-Fi 7. The Redmi 8 is lighter at 188 g versus 206 g and keeps a 3.5 mm headphone jack: it suits buyers who prioritize those features and is the better buy only if it costs less.
Xiaomi Redmi K90
The Xiaomi Redmi K90 is the better fit for buyers seeking a 120Hz AMOLED display, a 7,100 mAh battery and 100W charging.
Xiaomi Redmi 8
The Xiaomi Redmi 8 is the better buy only for buyers who prioritize lower weight and a 3.5 mm headphone jack, and only if it costs less.
The verdict
Your pick: Xiaomi Redmi K90, ahead on Design & display, Performance & hardware, Camera, Connectivity and Battery & charging.
| Category | Redmi K90 | Redmi 8 |
|---|---|---|
| Design & display | 8.8 | 4.5 |
| Performance & hardware | 9.3 | 2.5 |
| Camera | 7.6 | 3.6 |
| Connectivity | 7.9 | 3.9 |
| Battery & charging | 8.3 | 5.4 |
Which one is for you?
Xiaomi Redmi K90, if you care about…
- Battery Capacity
- 7,100 mAh
- against 5,000 mAh
- RAM Capacity
- 16 GB
- against 4 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, Wi-Fi 4 (802.11n)
- Storage Type
- UFS 4.1
- against eMMC 5.1
Xiaomi Redmi 8, if you care about…
- Weight
- 188 g
- against 206 g
Specification comparison
Performance
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 439 |
| Processor Process Size | 3 nm Best value | 12 nm |
| Graphics GPU | Qualcomm Adreno 830 | Qualcomm Adreno 505 |
| Storage Type | UFS 4.1 Best value | eMMC 5.1 |
| Maximum CPU Clock | 4.47 GHz Best value | 1.95 GHz |
| Maximum Storage Capacity | 1 TB Best value | 64 GB |
| AnTuTu Score | 2,920,000 | 89,903 |
| Geekbench 6 Single-Core | 3,234 Best value | 492 |
| Geekbench 6 Multi-Core | 10,059 Best value | 1,701 |
| CPU Description | Octa-core processor with 2x4.32 GHz Oryon V2 Phoenix L cores and 6x3.53 GHz Oryon V2 Phoenix M cores. | Octa-core CPU with 4 Cortex-A53 cores at 1.95 GHz and 4 Cortex-A53 cores at 1.45 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 16 GB Best value | 4 GB |
| RAM Type | LPDDR5X Best value | DDR3 |
| AnTuTu version | v10 | — |
Design
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Body Colors | Black, White, Blue, Purple | Black, Red, Blue |
| Body Thickness | 8 mm Best value | 9.4 mm |
| Body Width | 75.3 mm | 75.4 mm |
| Body Height | 157.5 mm | 156.5 mm |
| Weight | 206 g | 188 g Best value |
| Usable Surface | 89.8 % Best value | 81.8 % |
| Body Materials | Glass, Aluminium Alloy Best value | Glass, Plastic |
| Resistance Features | IP68, IP69 | Water Resistant |
| Waterproof Depth | 1.5 m | — |
Battery
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Battery Capacity | 7,100 mAh Best value | 5,000 mAh |
| Battery Type | Si-Carbon Li-Ion Best value | Li-Polymer |
| Fast Charge Power | 100 W Best value | 18 W |
| Battery Features | Non-Removable, Rechargeable, Fast Charging, Reverse Charging, Reverse Wireless Charging, Battery Level Indicator Best value | Fast Charging, Battery Level Indicator, Rechargeable |
| Reverse wireless charging power | 22.5 W | — |
Display
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Display Aspect Ratio | 19.5:9 | 19:9 |
| Display Technology | AMOLED Best value | IPS LCD |
| Peak Display Brightness | 3,500 nits Best value | 400 nits |
| Display Diagonal | 6.59″ Best value | 6.22″ |
| Display Horizontal Resolution | 1,156 px Best value | 720 px |
| Display Vertical Resolution | 2,510 px Best value | 1,520 px |
| Display Pixel Density | 419 ppi Best value | 270 ppi |
| Display Refresh Rate | 120 Hz Best value | 60 Hz |
| Touch Sampling Rate | 480 Hz | — |
| Display Features | Hole-Punch Notch, LTPO, Dolby Vision, HDR10+, HDR10, Always-On Display, Capacitive Touch, Multi-Touch, DC Dimming, DCI-P3, 10-Bit Panel, 120Hz, 2,592Hz PWM, TÜV Rheinland Low Blue Light, TÜV Rheinland Flicker-Free Certified, TÜV Rheinland Eye Comfort Certification, Scratch Resistant | Gorilla Glass 5, IPS LCD, Touchscreen |
Sensors
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Rear |
Sensor
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, RGB Sensor, Ultrasonic Proximity Sensor, Cooling System | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass |
Software
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Operating System | Android 16 | Android 9 |
| OS Family | Android | Android |
| OS Version | 16 Best value | 9 |
Connectivity
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS 800, 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 B48, 4G LTE B66, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n7, 5G NR n8, 5G NR n28, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n48, 5G NR n66, 5G NR n77, 5G NR n78 | 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 B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B20, 4G LTE B38, 4G LTE B40 |
| Cellular Technologies | GSM, HSPA, LTE, 5G Best value | GSM, HSPA, UMTS, LTE, 4G |
| 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 Best value | Wi-Fi 802.11 b/g/n, Wi-Fi 4 (802.11n) |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO | Wi-Fi Direct, Wi-Fi 802.11 b/g/n |
| Bluetooth Version | Bluetooth 5.4 Best value | Bluetooth 4.2 |
| Bluetooth Profiles | A2DP, LE, LHDC 5.0, ASHA | A2DP, LE |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value | GPS, GLONASS, Galileo, BeiDou |
| Connectivity Features | Infrared, NFC, USB Type-C, USB OTG, USB Host 2.0, USB 3.2, Computer Sync, DLNA, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage | 3.5 mm Audio Jack, Infrared, FM Radio, USB Type-C, USB OTG, USB Charging |
| USB Version | USB 3.2 Best value | USB 2.0 |
| SAR American Head | — | 0.34 W/kg |
| SAR American Body | — | 1 W/kg |
| SAR (EU) head | — | 0.23 W/kg |
| SAR (EU) body | — | 1.48 W/kg |
| Max. download speed | 10,000 Mbps Best value | 150 Mbps |
| Max. upload speed | 3,500 Mbps Best value | 75 Mbps |
Audio
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Microphone Count | — | 2 |
| Audio Features | Stereo Speakers, Dolby Atmos, Noise-Cancellation Microphone, Hi-Res Audio, Hi-Res Wireless Audio, LHDC 5, ASHA, A2DP, LE Best value | A2DP, LE, Loudspeaker |
Technical
| Specification | Redmi K90 | Redmi 8 |
|---|---|---|
| Model numbers | 2510DRK44C | M1908C3IC, MZB8255IN, M1908C3IG, M1908C3IH |
