Lenovo Legion 9i (18”, 10) vs Lenovo B51 80 comparison

Show Only Differences Highlight Differences	Lenovo Legion 9i (18”, 10)	Lenovo B51 80
key specs
Display size	18.00-inch	15.60-inch
Display resolution	3840x2400 pixels	1366x768 pixels
Processor	Intel Core Ultra 9	Core i7
RAM	64GB	8GB
OS	Windows 11 Pro	Windows 10
Hard disk	No	1TB
SSD	2TB	No
Graphics	Nvidia GeForce RTX 5090	AMD Radeon R5 M330
Weight	3.50 kg	2.30 kg
Touchscreen	-	No
general
Brand	Lenovo	Lenovo
Model	Legion 9i (18”, 10)	B51 80
Release date	May 8, 2025	-
Launched in India	No	-
Model Name	9i	-
Series	Legion	-
Dimensions (mm)	403.00 x 296.50 x 23.90	24.89 x 379.98 x 10.31
Weight (kg)	3.5	2.3
Colours	Carbon Black	Black
Material	Aluminium	-
Operating system	Windows 11 Pro	Windows 10
Battery Capacity (WHR)	99.99	-
Model Number	-	B51 80
Battery Life (up to hours)	-	4
display
Size	18.00-inch	15.60-inch
Resolution	3840x2400 pixels	1366x768 pixels
Refresh Rate	240Hz	-
Touch Screen	-	No
processor
Processor	Intel Intel Core Ultra 9 275HX	Intel Core i7 6th Gen 6500U
Base Clock Speed	-	2.5 GHz
Cache	-	4MB
memory
RAM	64GB	8GB
RAM Slots	4	2
Expandable RAM up to (GB)	-	16GB
graphics
Dedicated Graphics	Yes	-
Graphics Processor	Nvidia GeForce RTX 5090	AMD Radeon R5 M330
Dedicated Graphic Memory	24GB	-
Dedicated Graphic Memory Type	GDDR7	-
storage
Hard disk	No	1TB
SSD	2TB	No
connectivity
Wi-Fi 7	Yes	-
Bluetooth version	5.4	4
Ethernet	RJ45	-
Wi-Fi standards supported	-	802.11 ac
inputs
Web Camera	5-megapixel	-
Pointer Device	Touchpad	Trackpad
Backlit Keyboard	Yes	-
Touchpad	Yes	-
Internal Mic	Yes	-
Speakers	Yes	Stereo Speakers
Optical Disk Drive	-	CD/DVD Reader
Finger Print Sensor	-	No
ports and slots
Thunderbolt 5 (Type C)	2	-
Number of USB Ports	6	2
USB 3.2 Gen 2 (Type C)	1	-
HDMI Port	Yes	Standard
Multi Card Slot	SD Card Reader	SD Card Reader
Headphone and Mic Combo Jack	Yes	Yes
RJ45 (LAN)	Yes	Yes
USB Ports	-	2 x USB 3.0
VGA Port	-	Yes

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