Side-by-side technical data

Xiaomi Redmi K90 Ultra vs Xiaomi Redmi K100

Comparison between Xiaomi Redmi K90 Ultra and Xiaomi Redmi K100: camera, battery, fast charging, display, performance and colors, side by side. More phones from Xiaomi.

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Redmi K90 Ultra

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Redmi K100

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The verdict

Neither runs away with it: each wins something.

Category
Category	Redmi K90 Ultra	Redmi K100
Design & display	8.6	8.8
Performance & hardware	9.1	9.7
Camera	7.4	7.2
Connectivity	7.9	7.1
Battery & charging	8.3	8.3

Which one is for you?

Xiaomi Redmi K90 Ultra, if you care about…

Maximum Storage Capacity: 1 TB; against 512 GB
Peak Display Brightness: 9,500 nits; against 3,500 nits
Display Pixel Density: 447 ppi; against 405 ppi
Resistance Features: IP68, IP69, IP66; against IP68

Xiaomi Redmi K100, if you care about…

Battery Capacity: 10,000 mAh; against 8,550 mAh
OS Version: 17; against 16

Specification comparison

Show differences only

Performance

Specification	Redmi K90 Ultra	Redmi K100
Processor Model	Qualcomm Snapdragon 8 Elite	Qualcomm Snapdragon 8 Elite
Processor Process Size	3 nm	3 nm
Graphics GPU	Qualcomm Adreno 830	Qualcomm Adreno 840
Storage Type	UFS 4.1	UFS
Maximum CPU Clock	4.32 GHz	4.32 GHz
Maximum Storage Capacity	1 TB Best value	512 GB
AnTuTu Score	3,081,184	—
Geekbench 6 Single-Core	3,234	3,234
Geekbench 6 Multi-Core	10,059	10,059
CPU Description	Octa-core CPU with 2x4.32 GHz and 6x3.53 GHz cores	Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
Processor Type	Octa-Core	Octa-Core
64-Bit Processor	Yes	—
RAM Capacity	16 GB	16 GB
RAM Type	LPDDR5X	—
AnTuTu version	v11	—

Design

Specification	Redmi K90 Ultra	Redmi K100
Body Colors	Black, Blue, Silver	Green
Body Thickness	8.2 mm	—
Body Width	77.9 mm	—
Body Height	162.9 mm	—
Weight	227 g	—
Usable Surface	90.3 %	—
Body Materials	Glass, Aluminium Alloy	Glass, Aluminium Alloy
Resistance Features	IP68, IP69, IP66 Best value	IP68
Waterproof Depth	1.5 m	1.5 m

Battery

Specification	Redmi K90 Ultra	Redmi K100
Battery Capacity	8,550 mAh	10,000 mAh Best value
Battery Type	Si-Carbon Li-Ion	Si-Carbon Li-Ion
Fast Charge Power	100 W	100 W
Battery Features	Non-Removable, Fast Charging, Reverse Charging, Reverse Wireless Charging, Rechargeable, Battery Level Indicator	Fast Charging, USB Power Delivery, Reverse Charging, Battery Level Indicator, Charger Included, Rechargeable, Reverse Wireless Charging
Reverse wireless charging power	22.5 W	—

Display

Specification	Redmi K90 Ultra	Redmi K100
Display Aspect Ratio	19.5:9	19.5:9
Display Technology	AMOLED	AMOLED
Peak Display Brightness	9,500 nits Best value	3,500 nits
Display Diagonal	6.83″	6.83″
Display Horizontal Resolution	1,280 px Best value	1,156 px
Display Vertical Resolution	2,772 px Best value	2,510 px
Display Pixel Density	447 ppi Best value	405 ppi
Display Refresh Rate	165 Hz	165 Hz
Touch Sampling Rate	480 Hz	—
Display Contrast Ratio	8,000,000 :1	—
Display Features	Hole-Punch Notch, HDR10, HDR10+, Dolby Vision, Always-On Display, Capacitive Touch, Multi-Touch, Gorilla Glass, DC Dimming, DCI-P3, TÜV Rheinland Low Blue Light, TÜV Rheinland Flicker-Free Certified, TÜV Rheinland Eye Comfort Certification, Scratch Resistant, Frameless	Dolby Vision, HDR Vivid, HDR10+, Gorilla Glass, HDR10, Touchscreen, 2560Hz PWM, 165Hz
Display colors	—	68B colors

Sensors

Specification	Redmi K90 Ultra	Redmi K100
Fingerprint Sensor Placement	Under Display	Under Display

Sensor

Specification	Redmi K90 Ultra	Redmi K100
Sensor Features	Fingerprint Sensor, Accelerometer, Proximity Sensor, Gyroscope, Compass, Hall Sensor, Light Sensor, RGB Sensor, Cooling System	Fingerprint Sensor, Accelerometer, Proximity Sensor, Gyroscope, Compass

Software

Specification	Redmi K90 Ultra	Redmi K100
Operating System	Android 16	Android 17
OS Family	Android	Android
OS Version	16	17 Best value

Connectivity

Specification	Redmi K90 Ultra	Redmi K100
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 B1, 3G UMTS B2, 3G UMTS B3, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B19, 4G LTE B28A, 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 n28a, 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 800, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 4G LTE bands unspecified, 5G NR bands unspecified
Cellular Technologies	GSM, HSPA, LTE, 5G	GSM, HSPA, LTE, 5G, 4G, UMTS, 3G
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	Wi-Fi 802.11a/b/g/n/ac/6/7
Wi-Fi Features	Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO	Dual Band, Wi-Fi Direct
Bluetooth Version	Bluetooth 5.4	Bluetooth 5.4
Bluetooth Profiles	A2DP, LE, LHDC 5.0, ASHA, Auracast	A2DP, LE, LHDC 5.0, ASHA
Navigation Systems	GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value	GPS, BeiDou, Galileo, QZSS, NavIC, GLONASS
Connectivity Features	USB Charging, USB Mass Storage, USB OTG, USB Type-C, NFC, Computer Sync, OTA Sync, Tethering, Infrared, VoLTE	Infrared, NFC, USB Type-C, USB OTG
USB Version	USB 3.2	USB Type-C
Max. download speed	10,000 Mbps	—
Max. upload speed	3,500 Mbps	—

Audio

Specification	Redmi K90 Ultra	Redmi K100
Microphone Count	—	3
Audio Features	Stereo Speakers, Dolby Atmos, Hi-Res Audio, Hi-Res Wireless Audio, A2DP, LE, LHDC 5, ASHA, Auracast	A2DP, LE, LHDC 5, ASHA, Stereo Speakers, Dolby Atmos, 24-bit/192kHz Audio, Hi-Res Audio, Hi-Res Wireless Audio

Technical

Specification	Redmi K90 Ultra	Redmi K100
Model numbers	2604FRK1EC	—