Lenovo Legion 9i Gen 10 (2025) vs Lenovo Slim Pro 7i Gen 8 (14.5”)

[ VERDICT ] Winner: Lenovo Legion 9i Gen 10 (2025) (89/100)

Lenovo Legion 9i Gen 10 (2025) leads overall with a score of 89/100 compared to Lenovo Slim Pro 7i Gen 8 (14.5”) (58/100), offering superior measured performance and technical specifications.

[ WINNER ]
Lenovo Legion 9i Gen 10 (2025)
Lenovo

Lenovo Legion 9i Gen 10 (2025)

89/100
View Full Specs →
Lenovo Slim Pro 7i Gen 8 (14.5”)
Lenovo

Lenovo Slim Pro 7i Gen 8 (14.5”)

58/100
View Full Specs →

Benchmark Performance Comparison

Normalized Lab Scores
Benchmark measurements and scores across compared devices
Benchmark Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Gaming 92.0 Excellent WINNER 22.0 Poor
NanoReview Score 89.0 Very Good WINNER 58.0 Below Average
Performance 96.0 Excellent WINNER 60.0 Average

Detailed Technical Specifications

Battery

Battery specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Battery type Li-Po Li-Po
Charge power 400 W 100 / 140 W
Charging port position Left, Bottom Left
Charging via USB (Power Delivery) Yes, 140 W Yes
Fast charging Yes Yes
Replaceable No No
Weight of AC adapter 1247 grams 378 / 442 grams
Full charging time — 1:30 hr

CPU

CPU specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Base frequency 2.7 GHz 2.6 GHz
Cores 24 (8P + 16E) 12 (4P + 8E)
Fabrication process 3 nm 10 nm
Integrated GPU Arc Graphics (4-Cores) Intel Iris Xe Graphics (80EU)
L3 Cache 36 MB 18 MB
Threads 24 16
Turbo frequency 5.4 GHz 4.7 GHz

Case

Case specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Area 1195 cm2(185.2 inches2) 740 cm2(114.7 inches2)
Colors Black Gray, Blue
Cooling system Active Active
Dimensions 403 x 296.5 x 23.9-27.95 mm15.87 x 11.67 x 0.94-1.1 inches 326 x 227 x 15.6 mm12.83 x 8.94 x 0.61 inches
Liquid metal Yes No
Material Aluminum Aluminum
Noise level (max. load) 56 dB 46.2 dB
Number of fans 4 2
Opening angle 180° 180°
Screen-to-body ratio ~78.6% ~82.4%
Side bezels 7.7 mm 6.8 mm
Transformer No No
Vapor chamber Yes No
Weight 3.5 kg (7.72 lbs) 1.49 kg (3.29 lbs)

Connectivity

Connectivity specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Audio jack (3.5 mm) Yes Yes
Bluetooth v5.4 v5.2
DisplayPort No No
Ethernet (RJ45) Yes No
Fingerprint No No
HDMI 1x HDMI 2.1 1x HDMI 2.0
Infrared sensor Yes Yes
Optical drive No No
Proprietary charging port Yes No
SD card reader Yes No
Thunderbolt Thunderbolt 5 Thunderbolt 4
USB Type-C 3x USB 4.0 2x USB 3.2
USB-A 3x USB 3.2 1x USB 3.2
VGA No No
Webcam Above the display Above the display
Webcam resolution 2560 x 1440 1920 x 1080
Wi-Fi standard v7 v6E

Display

Display specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Adobe RGB profile 96.8% —
Aspect ratio 16:10 16:10
Coating Glossy Matte
Contrast 1200:1 1500:1
DCI-P3 color gamut 88.9% —
HDR support Yes, Dolby Vision Yes, Dolby Vision
PPI 252 ppi 208 ppi
Refresh rate 240 Hz 90 Hz
Resolution 3840 x 2400 pixels 2560 x 1600 pixels
Response time 3 ms —
Size 18 inches 14.5 inches
Sync technology G-Sync No
Touchscreen No No
Type Mini LED IPS LCD
sRGB color space 100% 100%
Ambient light sensor — Yes

GPU Benchmarks

GPU Benchmarks specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Blender GPU 7717 1034
Solar Bay 123422 19464

Graphics Card

Graphics Card specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
FLOPS 42 TFLOPS 6.7 TFLOPS
GPU base clock 975 MHz 1403 MHz
GPU performance 42 TFLOPS 6.7 TFLOPS
Memory bus 256 bit 128 bit
Memory size 16 GB 6 GB
Memory speed ~28 Gbps 12 Gbps
Memory type GDDR7 GDDR6
Nvidia Optimus MUX Yes
Raster operations pipelines (ROPs) 96 40
Shading units (cores) 7680 2048
TGP 175 W 73 W
Texture mapping units (TMUs) 240 64
GPU boost clock — 1635 MHz

Input

Input specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Backlight Yes Yes
Key travel 1.6 mm 1.5 mm
Keyboard type Island Island
Numpad Yes No
Surface Glass Glass
Windows Precision Yes Yes

RAM

RAM specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Channels 2x16 GB 2x8 GB
Clock 5600 MHz 5200 MHz
Max. ram size 192 GB —
Total slots 4 1
Upgradable Yes No

Sound

Sound specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Audio chip Realtek ALC3306 Realtek ALC3306
Dolby Atmos No Yes
Loudness ~79 dB ~79.3 dB
Microphones 2 4
Power 2x2W, 2x2W 4x2W
Speakers 2.2 (2 tweeters and 2 woofers) 2.2 (2 tweeters and 2 woofers)

Storage

Storage specifications comparison
Specification Lenovo Legion 9i Gen 10 (2025) Lenovo Slim Pro 7i Gen 8 (14.5”)
Bus PCI-E Gen 5.0 (4x) PCI-E Gen 4.0 (4x)
NVMe Yes Yes
Storage type SSD (M2) SSD (M2)
Total slots 4 1

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