Lenovo Legion 9i Gen 10 (2025) vs Acer Predator Helios 18 AI (2026)

Please select specific configurations for the laptops to get a more accurate comparative review
Display 3840 x 2400
CPU
Intel Core Ultra 9 290HX Plus
GPU
RAM
Storage

Review

Evaluation of Lenovo Legion 9i Gen 10 (2025) and Acer Predator Helios 18 AI (2026) important characteristics
Performance
System and application performance
Gaming
Performance in popular 3D games
Display
Viewing angle, color accuracy, brightness
Battery Life
Potential battery life in light and average use
Connectivity
Ports, webcam and other interfaces
Portability
Design, materials, durability and usability
Pick the usage scenario that best matches your needs
Primary usage:

Value for money (Beta)

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Currency
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Key Differences

What are the key differences between the notebooks
Advantages of the Lenovo Legion 9i Gen 10 (2025)
  • Higher number of cutting-edge USB Type-C ports: 3 versus 2
  • Thinner bezels and 3% higher screen-to-body ratio
  • Better webcam recording quality
  • 50% sharper screen – 252 versus 168 pixels per inch (PPI)
Advantages of the Acer Predator Helios 18 AI (2026)
  • Higher screen refresh rate: 250 versus 240 Hz
  • Around 25% better multi-core CPU performance in the Cinebench 2024 test
  • Provides 92% higher max. screen brightness: 1000 vs 520 nits

Tests and Specifications

Comparison table of test results and technical specs

Case

Weight 3.5 kg (7.72 lbs) 3.5 kg (7.72 lbs)
Dimensions 403 x 296.5 x 23.9-27.95 mm
15.87 x 11.67 x 0.94-1.1 inches
400.96 x 307.9 x 17.3-29.55 mm
15.79 x 12.12 x 0.68-1.16 inches
Area 1195 cm2 (185.2 inches2) 1235 cm2 (191.4 inches2)
Screen-to-body ratio ~78.6% ~76.1%
Side bezels 7.7 mm 6.6 mm
Colors Black Blue
Material Aluminum Top: Aluminum
Middle: Plastic
Bottom: Plastic
Transformer No No
Opening angle 180° 160°
Size comparison
Cooling solution
Cooling system Active Active
Vapor chamber Yes No
Liquid metal Yes Yes
Number of fans 4 2
Noise level (max. load) 56 dB 50.3 dB

Display

Size 18 inches 18 inches
Type Mini LED Mini LED
Refresh rate 240 Hz 250 Hz
PPI 252 ppi 168 ppi
Aspect ratio 16:10 16:10
Resolution 3840 x 2400 pixels 2560 x 1600 pixels
HDR support Yes, Dolby Vision Yes, HDR10
Sync technology G-Sync G-Sync
Touchscreen No No
Coating Glossy Matte
Ambient light sensor - No
Display tests
Contrast 1200:1 -
sRGB color space 100% 100%
Adobe RGB profile 96.8% 90.1%
DCI-P3 color gamut 88.9% 100%
Response time 3 ms 3 ms
Max. brightness

Battery

Capacity
Battery type Li-Po Li-Ion
Replaceable No No
Fast charging Yes Yes
Charging via USB (Power Delivery) Yes, 140 W Yes, 140 W
Charging port position Left, Bottom Bottom
Charge power 400 W 400 W
Weight of AC adapter 1247 grams -

CPU

CPU name
Base frequency 2.7 GHz 2.7 GHz
Turbo frequency 5.4 GHz 5.5 GHz
Cores 24 (8P + 16E) 24 (8P + 16E)
Threads 24 24
L3 Cache 36 MB 36 MB
Integrated GPU Arc Graphics (4-Cores) Arc Graphics (4-Cores)
Fabrication process 3 nm 3 nm

Benchmarks

Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Cinebench 2024 (Single-Core)
Cinebench 2024 (Multi-Core)

Graphics Card

GPU name
TGP 175 W 175 W
Nvidia Optimus MUX Yes, Advanced Optimus
Type Dedicated Dedicated
Fabrication process 4 nm 4 nm
GPU base clock 975 MHz 975 MHz
FLOPS 42 TFLOPS 42 TFLOPS
Memory size 16 GB 16 GB
Memory type GDDR7 GDDR7
Memory bus 256 bit 256 bit
Memory speed ~28 Gbps ~28 Gbps
Shading units (cores) 7680 7680
Texture mapping units (TMUs) 240 240
Raster operations pipelines (ROPs) 96 96
GPU performance 42 TFLOPS 42 TFLOPS

GPU Benchmarks

Steel Nomad Lite Score
Blender GPU 7651 7688
Solar Bay 123422 120684
Expected FPS based on average performance across 9 popular games. Details

RAM

RAM size
Channels 2x16 GB 2x8 GB
Clock 5600 MHz 6400 MHz
Type DDR5 DDR5
Upgradable Yes Yes
Total slots 4 4
Max. ram size 192 GB 192 GB

Storage

Storage size
Bus PCI-E Gen 5.0 (4x) PCI-E Gen 5.0 (4x)
Storage type SSD (M2) SSD (M2)
Channels 1x1024 GB 1x1024 GB
Upgradable Yes Yes
Total slots 4 3
NVMe Yes Yes

Sound

Audio chip Realtek ALC3306 -
Speakers 2.2 (2 tweeters and 2 woofers) 6.0
Power 2x2W, 2x2W -
Dolby Atmos No No
Loudness ~79 dB -
Microphones 2 3

Connectivity

Wi-Fi standard v7 v7
Bluetooth v5.4 v5.4
Fingerprint No No
Infrared sensor Yes Yes
Optical drive No No
Webcam Above the display Above the display
Webcam resolution 2560 x 1440 1920 x 1080
Ports
USB-A 3x USB 3.2 3x USB 3.2
USB Type-C 3x USB 4.0 2x USB 4.0
Thunderbolt Thunderbolt 5 Thunderbolt 5
HDMI 1x HDMI 2.1 1x HDMI 2.1
DisplayPort No No
VGA No No
Audio jack (3.5 mm) Yes Yes
Ethernet (RJ45) Yes Yes
SD card reader Yes Yes
Proprietary charging port Yes Yes

Input

Keyboard
Keyboard type Island Mechanical
Numpad Yes Yes
Backlight Yes Yes
Key travel 1.6 mm -
Touchpad
Size 15.0 x 9.5 cm 15.2 x 9.0 cm
Surface Glass Glass
Windows Precision Yes Yes
Further details
Notes on Legion 9i Gen 10 (2025):
    - The display can operate in FHD mode at 440 frames per second.
*Disclaimer! Ports, speakers, display, and other specifications can vary depending on the laptop's specific configuration or region.

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