Screen size
Poco F8 UltraWinner: 6.9"+1%
Redmi K90 Max6.8"
Quick verdict
Poco F8 Ultra leads the measured specs 8-5.
Measured wins
Poco F8 Ultra
8
spec wins
Overall winner
Ties
10
equal specs
Redmi K90 Max
5
spec wins
Screen size
Technology
Poco F8 Ultra
GSM / HSPA / LTE / 5G
Redmi K90 Max
GSM / HSPA / LTE / 5G
2G bands
Poco F8 Ultra
GSM 850 / 900 / 1800 / 1900
Redmi K90 Max
GSM 850 / 900 / 1800 / 1900
3G bands
Poco F8 Ultra
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
Redmi K90 Max
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Poco F8 Ultra
1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40, 41, 42, 48, 66, 71
Resolution
Refresh rate
Peak brightness
equal specsPixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
equal specsWeight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
equal specsRedmi K90 Max
1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
5G bands
Poco F8 Ultra
1, 2, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 48, 66, 71, 77, 78 SA/NSA
Redmi K90 Max
1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41, 48, 77, 78 SA/NSA
Speed
Poco F8 Ultra
HSPA, LTE, 5G
Redmi K90 Max
HSPA, LTE, 5G
Announced
Poco F8 Ultra
2025, November 26
Redmi K90 Max
2026, April 21
Status
Poco F8 Ultra
Available. Released 2025, November 26
Redmi K90 Max
Available. Released 2026, April 21
Dimensions
Poco F8 Ultra
163.3 x 77.8 x 7.9 mm or 8.3 mm
Redmi K90 Max
162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in)
Weight
Poco F8 Ultra
218 g or 220 g (7.69 oz)
Redmi K90 Max
227 g (8.01 oz)
Build
Poco F8 Ultra
Glass front (Poco Shield Glass), aluminum alloy frame, fiber-reinforced plastic back or silicone polymer back
Redmi K90 Max
Glass front (Dragon Crystal Glass), aluminum frame, glass-fiber reinforced plastic back or silicone polymer back
SIM
Poco F8 Ultra
· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Redmi K90 Max
Nano-SIM + Nano-SIM
Other
Poco F8 Ultra
IP68 dust tight and water resistant (immersible up to 1.5m 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
Poco F8 Ultra
AMOLED, 68B colors, 2560Hz PWM, 120Hz, Dolby Vision, HDR10+, 2000 nits (HBM), 3500 nits (peak)
Redmi K90 Max
AMOLED, 68B colors, 165Hz, Dolby Vision, HDR10+, HDR Vivid, 3500 nits (peak)
Size
Poco F8 Ultra
6.9 inches, 116.6 cm2 (~91.8% screen-to-body ratio)
Redmi K90 Max
6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
Resolution
Poco F8 Ultra
1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)
Redmi K90 Max
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
Protection
Poco F8 Ultra
Poco Shield Glass
Redmi K90 Max
Dragon Crystal Glass
OS
Poco F8 Ultra
Android 16, HyperOS 3
Redmi K90 Max
Android 16, HyperOS 3
Chipset
Poco F8 Ultra
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
Redmi K90 Max
MediaTek Dimensity 9500 (3 nm)
CPU
Poco F8 Ultra
Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
Redmi K90 Max
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
GPU
Poco F8 Ultra
Adreno 840
Redmi K90 Max
Mali-G1 Ultra MC12
Card slot
Poco F8 Ultra
No
Redmi K90 Max
No
Internal
Poco F8 Ultra
256GB 12GB RAM, 512GB 16GB RAM
Redmi K90 Max
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
Poco F8 Ultra
UFS 4.1
Redmi K90 Max
UFS 4.1
Triple
Poco F8 Ultra
50 MP, f/1.7, 23mm (wide), 1/1.31", 1.2µm, dual pixel PDAF, OIS 50 MP, f/3.0, 115mm (periscope telephoto), 1/2.76", 0.64µm, PDAF (30cm - ∞), OIS, 5x optical zoom 50 MP, f/2.4, 18mm, 102˚ (ultrawide), 1/2.88", 0.61µm
Redmi K90 Max
-
Features
Poco F8 Ultra
Color spectrum sensor, LED flash, HDR, panorama
Redmi K90 Max
LED flash, HDR, panorama
Video
Poco F8 Ultra
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS, HDR10+
Redmi K90 Max
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
Dual
Poco F8 Ultra
-
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
Single
Poco F8 Ultra
32 MP, f/2.2, 21mm (wide), 1/3.44", 0.64µm
Redmi K90 Max
20 MP (wide)
Features
Poco F8 Ultra
HDR
Redmi K90 Max
HDR
Video
Poco F8 Ultra
4K@30fps, 1080p@30/60fps
Redmi K90 Max
1080p@30/60fps
Loudspeaker
Poco F8 Ultra
Yes, with stereo speakers (with Dolby Atmos)
Redmi K90 Max
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Poco F8 Ultra
No
Redmi K90 Max
No
Other
Poco F8 Ultra
Tuned by Bose Bose 2.1 stereo sound system with a woofer 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
Poco F8 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
Poco F8 Ultra
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5.0, ASHA, MIHC
Redmi K90 Max
5.4, A2DP, LE, LHDC 5, Auracast, ASHA, MIHC
Positioning
Poco F8 Ultra
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
Redmi K90 Max
GPS (L1+L5), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), GLONASS, NavIC
NFC
Poco F8 Ultra
Yes (market/region dependent)
Redmi K90 Max
Yes
Infrared port
Poco F8 Ultra
Yes
Redmi K90 Max
Yes
Radio
Poco F8 Ultra
No
Redmi K90 Max
No
USB
Poco F8 Ultra
USB Type-C 3.2, Display Port, OTG
Redmi K90 Max
USB Type-C
Sensors
Poco F8 Ultra
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Redmi K90 Max
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Type
Poco F8 Ultra
6500 mAh
Redmi K90 Max
8550 mAh
Charging
Poco F8 Ultra
100W wired, PD3.0, QC3+, 100W PPS, 100% in 38 mins 50W wireless, 50% in 31 mins 22.5W reverse wireless
Redmi K90 Max
100W wired, 100W PPS, PD3.0 22.5W reverse wired
Colors
Poco F8 Ultra
Black, White, Denim Blue
Redmi K90 Max
Silver, Blue, Black
Models
Poco F8 Ultra
25102PCBEG
Redmi K90 Max
-
Price
Poco F8 Ultra
£ 639.00 / € 679.90
Redmi K90 Max
About 440 EUR