Lenovo Legion Slim 5i Gen 8 (2023) vs Acer Predator Helios 16 (PH16-71) 2023

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Evaluation of Lenovo Legion Slim 5i Gen 8 (2023) and Acer Predator Helios 16 (PH16-71) 2023 important characteristics
System and application performance
Performance in popular 3D games
Viewing angle, color accuracy, brightness
Battery Life
Potential battery life in light and average use
Ports, webcam and other interfaces
Design, materials, durability and usability
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Key Differences

What are the key differences between the notebooks
Advantages of the Lenovo Legion Slim 5i Gen 8 (2023)
  • Significantly easier to carry: weighs 400 grams less (around 0.88 lbs)
  • Thinner bezels and 26% higher screen-to-body ratio
  • Much smaller footprint: 21% more compact case (145.1 vs 182.9 square inches)
Advantages of the Acer Predator Helios 16 (PH16-71) 2023
  • Higher screen refresh rate: 165 versus 144 Hz
  • Around 2.2x better multi-core CPU performance in the Cinebench R23 test
  • Includes an old-school USB-A port
  • Features a much bigger (~50%) battery – 90 against 60 watt-hours
  • Can run popular games at about 18-25% higher FPS
  • Provides 67% higher max. screen brightness: 500 vs 300 nits
  • 33% sharper screen – 189 versus 142 pixels per inch (PPI)

Value for money

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Tests and Specifications

Comparison table of test results and technical specs


Weight 2.3 kg (5.07 lbs) 2.7 kg (5.95 lbs)
Dimensions 359.7 x 260.3 x 19.9-25.2 mm
14.16 x 10.25 x 0.78-0.99 inches
399.3 x 295.5 x 26.8-27.6 mm
15.72 x 11.63 x 1.06-1.09 inches
Area 936 cm2 (145.1 inches2) 1180 cm2 (182.8 inches2)
Screen-to-body ratio ~79.3% ~62.9%
Side bezels 7.5 mm 27.3 mm
Colors Gray Black
Material Top: Aluminum
Middle: Plastic
Bottom: Plastic
Transformer No No
Opening angle 180° 140°
Size comparison
Cooling solution
Cooling system Active Active
Vapor chamber No No
Liquid metal No Yes
Number of fans 2 2
Noise level (max. load) - 49.5 dB


Size 16 inches 16 inches
Refresh rate 144 Hz 165 Hz
PPI 142 ppi 189 ppi
Aspect ratio 16:10 16:10
Resolution 1920 x 1200 pixels 2560 x 1600 pixels
HDR support No No
Sync technology G-Sync G-Sync
Touchscreen No No
Coating Matte Matte
Ambient light sensor No No
Display tests
Contrast 1200:1 1200:1
sRGB color space - 100%
Adobe RGB profile - 85%
DCI-P3 color gamut - 80%
Response time - 8 ms
Max. brightness


Full charging time - 1:15 hr
Battery type Li-Po Li-Po
Replaceable No No
Fast charging Yes Yes
USB Power Delivery Yes Yes
Charging port position Left, Bottom Bottom
Charge power 170 / 230 W 280 / 330 W
Weight of AC adapter - 1196 grams


CPU name
Base frequency 2 GHz 2.1 GHz
Turbo frequency 4.4 GHz 5 GHz
Cores 8 (4P + 4E) 16 (8P + 8E)
Threads 12 24
L3 Cache 12 MB 30 MB
Integrated GPU Intel UHD Graphics (48EU) Intel UHD Graphics (32EU)
Fabrication process 10 nm 10 nm


Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

Graphics Card

GPU name
TGP 95 W 140 W
Nvidia Optimus Yes, Advanced Optimus Yes, Advanced Optimus
Type Dedicated Dedicated
Fabrication process 8 nm 4 nm
GPU base clock 1530 MHz -
GPU boost clock 1740 MHz -
Memory size 6 GB 6 GB
Memory type GDDR6 GDDR6
Memory bus 128 bit 96 bit
Memory speed 12 Gbps ~16 Gbps
Shading units (cores) 2048 2560
Texture mapping units (TMUs) 64 80
Raster operations pipelines (ROPs) 40 32
GPU performance


RAM size
Channels 1x8 GB 2x8 GB
Clock 5200 MHz 4800 MHz
Type DDR5 DDR5
Upgradable Yes Yes
Total slots 2 2
Max. ram size 32 GB 32 GB


Storage size
Bus PCI-E Gen 4.0 (4x) PCI-E Gen 4.0 (4x)
Storage type SSD (M2) SSD (M2)
Channels 1x512 GB 1x512 GB
Upgradable Yes Yes
Total slots 2 2
NVMe Yes Yes


Audio chip Realtek ALC3287 -
Speakers 2.0 2.0
Power 2x2W 2x2W
Dolby Atmos No No
Loudness - ~76.1 dB
Microphones 2 2


Wi-Fi standard v6E v6E
Bluetooth v5.2 v5.2
Fingerprint No No
Infrared sensor No No
Optical drive No No
Webcam Above the display Above the display
Webcam resolution 1920 x 1080 1920 x 1080
USB-A 2x USB 3.2 3x USB 3.2
USB Type-C 2x USB 4.0 2x USB 4.0
Thunderbolt Thunderbolt 4 Thunderbolt 4
HDMI 1x HDMI 2.1 1x HDMI 2.1
DisplayPort No No
Audio jack (3.5 mm) Yes Yes
Ethernet (RJ45) Yes Yes
SD card reader Yes Yes
Proprietary charging port Yes Yes


Keyboard type Island Island
Numpad Yes Yes
Backlight Yes Yes
Key travel 1.5 mm 1.8 mm
Size 12.0 x 7.5 cm 12.6 x 8.3 cm
Surface Plastic Glass
Windows Precision Yes Yes
Further details
Notes on Legion Slim 5i Gen 8 (2023):
    - Models with RTX 4060/4070 graphics have a thickness of 19.9-25.2 mm, while those with RTX 4050/3050 are 19.9-21.9 mm thick.
    - By pressing Fn+R, you can switch the display refresh rate between 240Hz, 165Hz, 144Hz, and 60Hz.
*Disclaimer! Ports, speakers, display, and other specifications can vary depending on the laptop's specific configuration or region.

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