Screen size
Fire 5 Ultra6.6"
Fire 6 MaxWinner: 6.7"+1.8%
Quick verdict
Fire 6 Max leads the measured specs 12-3.
Measured wins
Fire 5 Ultra
3
spec wins
Ties
6
equal specs
Fire 6 Max
12
spec wins
Overall winner
Screen size
Technology
Fire 5 Ultra
GSM / HSPA / LTE
Fire 6 Max
GSM / HSPA / LTE / 5G
2G bands
Fire 5 Ultra
GSM 850 / 900 / 1800 / 1900
Fire 6 Max
GSM 850 / 900 / 1800 / 1900
3G bands
Fire 5 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Fire 6 Max
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Fire 5 Ultra
1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
equal specsWi‑Fi
Bluetooth
USB
5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Fire 6 Max
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
Speed
Fire 5 Ultra
HSPA, LTE
Fire 6 Max
HSPA, LTE, 5G
5G bands
Fire 5 Ultra
-
Fire 6 Max
1, 3, 7, 8, 28, 38, 41, 77, 78, 79 SA/NSA
Announced
Fire 5 Ultra
2025, December
Fire 6 Max
2025, March
Status
Fire 5 Ultra
Available. Released 2025, December
Fire 6 Max
Available. Released 2025, March
Dimensions
Fire 5 Ultra
176.5 x 82.5 x 18.7 mm (6.95 x 3.25 x 0.74 in)
Fire 6 Max
179.5 x 82.5 x 25.5 mm (7.07 x 3.25 x 1.00 in)
Weight
Fire 5 Ultra
395 g (13.93 oz)
Fire 6 Max
529 g (1.17 lb)
SIM
Fire 5 Ultra
Nano-SIM + Nano-SIM
Fire 6 Max
Nano-SIM + Nano-SIM
Other
Fire 5 Ultra
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.5m MIL-STD-810H compliant Dedicated flashlight (on the back)
Fire 6 Max
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant
Type
Fire 5 Ultra
IPS LCD, 90Hz, 400 nits
Fire 6 Max
IPS LCD, 120Hz
Size
Fire 5 Ultra
6.6 inches, 104.6 cm2 (~71.9% screen-to-body ratio)
Fire 6 Max
6.72 inches, 109.0 cm2 (~73.6% screen-to-body ratio)
Resolution
Fire 5 Ultra
720 x 1612 pixels, 20:9 ratio (~267 ppi density)
Fire 6 Max
1080 x 2400 pixels, 20:9 ratio (~392 ppi density)
Protection
Fire 5 Ultra
Mohs level 6
Fire 6 Max
Mohs level 6
OS
Fire 5 Ultra
Android 15
Fire 6 Max
Android 14
Chipset
Fire 5 Ultra
Mediatek Helio G81 (12 nm)
Fire 6 Max
Mediatek Dimensity 7050 (6 nm)
CPU
Fire 5 Ultra
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
Fire 6 Max
Octa-core (2x2.6 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU
Fire 5 Ultra
Mali-G52 MC2
Fire 6 Max
Mali-G68 MC4
Card slot
Fire 5 Ultra
microSDXC (dedicated slot)
Fire 6 Max
microSDXC (uses shared SIM slot)
Internal
Fire 5 Ultra
256GB 8GB RAM
Fire 6 Max
256GB 8GB RAM
Single
Fire 5 Ultra
48 MP, f/1.8, (wide), AF
Fire 6 Max
-
Features
Fire 5 Ultra
Dual-LED flash, HDR, panorama
Fire 6 Max
Dual-LED flash, HDR, panorama
Video
Fire 5 Ultra
1440p@30fps
Fire 6 Max
4K@30fps, 1080p@30fps
Quad
Fire 5 Ultra
-
Fire 6 Max
50 MP, f/1.8, (wide), 1/2.5", PDAF 20 MP, f/1.8, (night vision), infrared night vision light 8 MP, f/2.2, (ultrawide) Thermal camera, 160x120 px, 8-14μm
Single
Fire 5 Ultra
8 MP, f/2.0, (wide)
Fire 6 Max
16 MP, f/2.3, (wide), 1/3.1"
Video
Fire 5 Ultra
1080p@30fps
Fire 6 Max
1080p@30fps
Loudspeaker
Fire 5 Ultra
Yes
Fire 6 Max
Yes
3.5mm jack
Fire 5 Ultra
No
Fire 6 Max
No
WLAN
Fire 5 Ultra
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Fire 6 Max
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Bluetooth
Fire 5 Ultra
5.0, A2DP, LE
Fire 6 Max
5.2, A2DP, LE
Positioning
Fire 5 Ultra
GPS, GLONASS, GALILEO, BDS
Fire 6 Max
GPS, GLONASS, BDS, GALILEO
NFC
Fire 5 Ultra
Yes
Fire 6 Max
Yes
Radio
Fire 5 Ultra
FM radio
Fire 6 Max
FM radio
USB
Fire 5 Ultra
USB Type-C
Fire 6 Max
USB Type-C 2.0, OTG
Sensors
Fire 5 Ultra
Fingerprint (side-mounted), accelerometer, proximity, compass
Fire 6 Max
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Type
Fire 5 Ultra
13000 mAh
Fire 6 Max
20800 mAh
Charging
Fire 5 Ultra
18W wired
Fire 6 Max
33W wired 10W reverse wired
Colors
Fire 5 Ultra
Gray, Orange, Green
Fire 6 Max
Silver, Green
Price
Fire 5 Ultra
About 250 EUR
Fire 6 Max
About 440 EUR