Screen size
equal specsRedmi K80 Ultra6.8"
Redmi K90 Max6.8"
Quick verdict
Redmi K90 Max leads the measured specs 6-2.
Measured wins
Redmi K80 Ultra
2
spec wins
Ties
14
equal specs
Redmi K90 Max
6
spec wins
Overall winner
Screen size
equal specsTechnology
Redmi K80 Ultra
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
Redmi K90 Max
GSM / HSPA / LTE / 5G
2G bands
Redmi K80 Ultra
GSM 850 / 900 / 1800 / 1900 , CDMA 800
Redmi K90 Max
GSM 850 / 900 / 1800 / 1900
3G bands
Redmi K80 Ultra
HSDPA 800 / 850 / 900 / 1700(AWS) / 2100 , CDMA2000 1x
Redmi K90 Max
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Redmi K80 Ultra
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
RAM
equal specsStorage
equal specsMain camera
equal specsFront camera
equal specsBattery
Wired charging
equal specsWeight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
equal specs1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66
Redmi K90 Max
1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
5G bands
Redmi K80 Ultra
1, 3, 5, 7, 8, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
Redmi K90 Max
1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41, 48, 77, 78 SA/NSA
Speed
Redmi K80 Ultra
HSPA, LTE, 5G
Redmi K90 Max
HSPA, LTE, 5G
Announced
Redmi K80 Ultra
2025, June 26
Redmi K90 Max
2026, April 21
Status
Redmi K80 Ultra
Available. Released 2025, June 26
Redmi K90 Max
Available. Released 2026, April 21
Dimensions
Redmi K80 Ultra
163.1 x 77.9 x 8.2 mm (6.42 x 3.07 x 0.32 in)
Redmi K90 Max
162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in)
Weight
Redmi K80 Ultra
219 g (7.72 oz)
Redmi K90 Max
227 g (8.01 oz)
Build
Redmi K80 Ultra
Glass front, aluminum frame
Redmi K90 Max
Glass front (Dragon Crystal Glass), aluminum frame, glass-fiber reinforced plastic back or silicone polymer back
SIM
Redmi K80 Ultra
Nano-SIM + Nano-SIM
Redmi K90 Max
Nano-SIM + Nano-SIM
Other
Redmi K80 Ultra
IP68 dust tight and water resistant (immersible up to 2m for 30 min)
Redmi K90 Max
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Built-in cooling fan
Type
Redmi K80 Ultra
OLED, 68B colors, 144Hz, Dolby Vision, HDR10+, HDR Vivid, 1800 nits (HBM), 3200 nits (peak)
Redmi K90 Max
AMOLED, 68B colors, 165Hz, Dolby Vision, HDR10+, HDR Vivid, 3500 nits (peak)
Size
Redmi K80 Ultra
6.83 inches, 114.5 cm2 (~90.2% screen-to-body ratio)
Redmi K90 Max
6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
Resolution
Redmi K80 Ultra
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
Redmi K90 Max
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
Protection
Redmi K80 Ultra
Scratch/drop-resistant glass
Redmi K90 Max
Dragon Crystal Glass
OS
Redmi K80 Ultra
Android 15, HyperOS 2
Redmi K90 Max
Android 16, HyperOS 3
Chipset
Redmi K80 Ultra
Mediatek Dimensity 9400+ (3 nm)
Redmi K90 Max
MediaTek Dimensity 9500 (3 nm)
CPU
Redmi K80 Ultra
Octa-core (1x3.63 GHz Cortex-X925 & 3x3.3 GHz Cortex-X4 & 4x2.4 GHz Cortex-A720)
Redmi K90 Max
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
GPU
Redmi K80 Ultra
Immortalis-G925
Redmi K90 Max
Mali-G1 Ultra MC12
Card slot
Redmi K80 Ultra
No
Redmi K90 Max
No
Internal
Redmi K80 Ultra
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Redmi K90 Max
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
Redmi K80 Ultra
UFS 4.1
Redmi K90 Max
UFS 4.1
Dual
Redmi K80 Ultra
50 MP, f/1.9, 23mm (wide), 1/1.55", 1.0µm, PDAF, OIS 8 MP, 119˚ (ultrawide), 1/4.0", 1.12µm
Redmi K90 Max
50 MP, f/1.7, 24mm (wide), 1/1.55", 1.0µm, PDAF, OIS 8 MP, f/2.2, (ultrawide), 1/4.0", 1.12µm
Features
Redmi K80 Ultra
Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Redmi K90 Max
LED flash, HDR, panorama
Video
Redmi K80 Ultra
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
Redmi K90 Max
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
Single
Redmi K80 Ultra
20 MP, (wide), 1/2.0", 0.8µm
Redmi K90 Max
20 MP (wide)
Features
Redmi K80 Ultra
HDR
Redmi K90 Max
HDR
Video
Redmi K80 Ultra
1080p@30/60fps
Redmi K90 Max
1080p@30/60fps
Loudspeaker
Redmi K80 Ultra
Yes, with stereo speakers
Redmi K90 Max
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Redmi K80 Ultra
No
Redmi K90 Max
No
Other
Redmi K80 Ultra
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Redmi K90 Max
Tuned by Bose Bose 2.1 stereo sound system with a woofer 24-bit/192kHz Hi-Res & Hi-Res wireless audio
WLAN
Redmi K80 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Redmi K90 Max
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Bluetooth
Redmi K80 Ultra
5.4, A2DP, LE, LHDC 5
Redmi K90 Max
5.4, A2DP, LE, LHDC 5, Auracast, ASHA, MIHC
Positioning
Redmi K80 Ultra
GPS (L1+L5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC, GLONASS
Redmi K90 Max
GPS (L1+L5), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), GLONASS, NavIC
NFC
Redmi K80 Ultra
Yes
Redmi K90 Max
Yes
Infrared port
Redmi K80 Ultra
Yes
Redmi K90 Max
Yes
Radio
Redmi K80 Ultra
Unspecified
Redmi K90 Max
No
USB
Redmi K80 Ultra
USB Type-C
Redmi K90 Max
USB Type-C
Sensors
Redmi K80 Ultra
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Redmi K90 Max
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Type
Redmi K80 Ultra
Si/C Li-Ion 7410 mAh
Redmi K90 Max
8550 mAh
Charging
Redmi K80 Ultra
100W wired, PD3.0 Bypass charging
Redmi K90 Max
100W wired, 100W PPS, PD3.0 22.5W reverse wired
Colors
Redmi K80 Ultra
Gray, White, Blue, Green
Redmi K90 Max
Silver, Blue, Black
Price
Redmi K80 Ultra
About 310 EUR
Redmi K90 Max
About 440 EUR