Lenovo Legion 9i (18”, 10) vs Lenovo Z51 I5 comparison

Compare Lenovo Legion 9i (18”, 10)
Compare Lenovo Z51 I5
key specs
Display size18.00-inch15.60-inch
Display resolution3840x2400 pixels1920x1080 pixels
ProcessorIntel Core Ultra 9Core i5
RAM64GB8GB
OSWindows 11 ProWindows 10 Home
Hard diskNo1TB
SSD2TBNo
GraphicsNvidia GeForce RTX 5090Intel Integrated Graphics
Weight3.50 kg-
Touchscreen-No
general
BrandLenovoLenovo
ModelLegion 9i (18”, 10)Z51 I5
Release dateMay 8, 2025-
Launched in IndiaNo-
Model Name9i-
SeriesLegion-
Dimensions (mm)403.00 x 296.50 x 23.90-
Weight (kg)3.5-
ColoursCarbon BlackBlack
MaterialAluminium-
Operating systemWindows 11 ProWindows 10 Home
Battery Capacity (WHR)99.99-
Model Number-Z51 I5
Battery Life (up to hours)-4
display
Size18.00-inch15.60-inch
Resolution3840x2400 pixels1920x1080 pixels
Refresh Rate240Hz-
Touch Screen-No
processor
ProcessorIntel Intel Core Ultra 9 275HXIntel Core i5 5th Gen
memory
RAM64GB8GB
RAM Slots4-
graphics
Dedicated GraphicsYesNo
Graphics ProcessorNvidia GeForce RTX 5090Intel Integrated Graphics
Dedicated Graphic Memory24GB4GB
Dedicated Graphic Memory TypeGDDR7DDR3
storage
Hard diskNo1TB
SSD2TBNo
connectivity
Wi-Fi 7Yes-
Bluetooth version5.44
EthernetRJ4510/100 T
Wi-Fi standards supported-802.11 ac
inputs
Web Camera5-megapixelYes
Pointer DeviceTouchpad-
Backlit KeyboardYes-
TouchpadYes-
Internal MicYes-
SpeakersYes-
ports and slots
Thunderbolt 5 (Type C)2-
Number of USB Ports6-
USB 3.2 Gen 2 (Type C)1-
HDMI PortYes-
Multi Card SlotSD Card Reader-
Headphone and Mic Combo JackYes-
RJ45 (LAN)Yes-

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