Lenovo Legion 9i (18”, 10) vs Acer Spin 3 SP315-51 comparison

Compare Lenovo Legion 9i (18”, 10)
Compare Acer Spin 3 SP315-51
key specs
Display size18.00-inch15.60-inch
Display resolution3840x2400 pixels1366x768 pixels
ProcessorIntel Core Ultra 9Core i3
RAM64GB8GB
OSWindows 11 ProWindows 10 Home
Hard diskNo1TB
SSD2TBNo
GraphicsNvidia GeForce RTX 5090Intel HD Graphics 520
Weight3.50 kg2.30 kg
Touchscreen-Yes
general
BrandLenovoAcer
ModelLegion 9i (18”, 10)Spin 3 SP315-51
Release dateMay 8, 2025-
Launched in IndiaNo-
Model Name9i-
SeriesLegionSpin 3
Dimensions (mm)403.00 x 296.50 x 23.90381.50 x 250.90 x 22.50
Weight (kg)3.52.3
ColoursCarbon BlackBlack
MaterialAluminium-
Operating systemWindows 11 ProWindows 10 Home
Battery Capacity (WHR)99.99-
Model Number-SP315-51
Battery Cell-4
Battery Life (up to hours)-9
display
Size18.00-inch15.60-inch
Resolution3840x2400 pixels1366x768 pixels
Refresh Rate240Hz-
Touch Screen-Yes
processor
ProcessorIntel Intel Core Ultra 9 275HXIntel Core i3 6th Gen 6006U
Base Clock Speed-2 GHz
Cache-3MB
memory
RAM64GB8GB
RAM Slots4-
Expandable RAM up to (GB)-12GB
graphics
Dedicated GraphicsYesNo
Graphics ProcessorNvidia GeForce RTX 5090Intel HD Graphics 520
Dedicated Graphic Memory24GB-
Dedicated Graphic Memory TypeGDDR7DDR4
storage
Hard diskNo1TB
SSD2TBNo
connectivity
Wi-Fi 7Yes-
Bluetooth version5.44
EthernetRJ45-
Wi-Fi standards supported-802.11 b/g/n/ac
inputs
Web Camera5-megapixelYes
Pointer DeviceTouchpadTouchpad
Backlit KeyboardYes-
TouchpadYesYes
Internal MicYesYes
SpeakersYes2 Speakers
ports and slots
Thunderbolt 5 (Type C)2-
Number of USB Ports63
USB 3.2 Gen 2 (Type C)1-
HDMI PortYesYes
Multi Card SlotSD Card ReaderSD Card Reader
Headphone and Mic Combo JackYes-
RJ45 (LAN)Yes-
USB Ports-2 x USB 2.0, 1 x USB 3.0
Lock Slot-Kensington Lock Port
Mic In-Yes

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