Lenovo IdeaPad Flex 5i (14” Intel) vs Slim 3i (15″, Gen 8)
45
out of 100
VS
37
out of 100
Please select specific configurations for the laptops to get a more accurate comparative review
Review
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
Value for money (Beta)
Key Differences
Advantages of the Lenovo IdeaPad Flex 5i (14” Intel)
- Can run popular games at about 92-125% higher FPS
- Slightly easier to carry: weighs 100 grams less (around 0.22 lbs)
- Around 35% better multi-core CPU performance in the Cinebench 2024 test
- Thinner bezels and 2% higher screen-to-body ratio
- Features a bigger (~12%) battery – 52.5 against 47 watt-hours
- Display has support for touch input
- Much smaller footprint: 17% more compact case (109.1 vs 131.4 square inches)
- Provides 20% higher max. screen brightness: 300 vs 250 nits
- 15% sharper screen – 162 versus 141 pixels per inch (PPI)
Tests and Specifications
Comparison table of test results and technical specsCase
| Weight | 1.5 kg (3.31 lbs) | 1.6 kg (3.53 lbs) |
| Dimensions | 313.1 x 224.9 x 17.4 mm 12.33 x 8.85 x 0.69 inches |
359.2 x 236 x 17.9 mm 14.14 x 9.29 x 0.7 inches |
| Area | 704 cm2 (109.1 inches2) | 848 cm2 (131.4 inches2) |
| Screen-to-body ratio | ~80.7% | ~79.2% |
| Side bezels | 5.8 mm | 6.9 mm |
| Colors | Gray, Blue | Gray, Blue |
| Material | Top: Aluminum Middle: Aluminum Bottom: Plastic |
Plastic |
| Transformer | Yes | No |
| Opening angle | 360° | - |
Size comparison
| Cooling system | Active | Active |
| Vapor chamber | No | No |
| Liquid metal | No | No |
| Number of fans | 1 | 1 |
| Noise level (max. load) | 38.3 dB | - |
Display
| Size | 14 inches | 15.6 inches |
| Type | IPS LCD | TN LCD |
| Refresh rate | 60 Hz | 60 Hz |
| PPI | 162 ppi | 141 ppi |
| Aspect ratio | 16:10 | 16:9 |
| Resolution | 1920 x 1200 pixels | 1920 x 1080 pixels |
| HDR support | No | No |
| Sync technology | No | No |
| Touchscreen | Yes | No |
| Coating | Glossy | Matte |
| Ambient light sensor | No | No |
Screen space comparison
IdeaPad Slim 3i (15″, Gen 8)
15.6″ (16:9 ratio) = 104 in2
IdeaPad Flex 5i (14” Intel)
14″ (16:10 ratio) = 88.1 in2
~18% more screen space
| Contrast | 800:1 | 400:1 |
Max. brightness
Battery
Capacity
| Full charging time | 1:15 hr | - |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Fast charging | Yes | Yes |
| Charging via USB (Power Delivery) | Yes | Yes |
| Charging port position | Left | Left |
| Charge power | 65 W | 65 W |
| Weight of AC adapter | 314 grams | 297 grams |
CPU
CPU name
| Base frequency | 1.2 GHz | 0 GHz |
| Turbo frequency | 4.4 GHz | - |
| Cores | 5 (1P + 4E) | 4 (0P + 4E) |
| Threads | 6 | 4 |
| L3 Cache | 8 MB | 6 MB |
| Integrated GPU | Intel UHD Graphics (48EU) | Intel UHD Graphics (24EU) |
| Fabrication process | 10 nm | 10 nm |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Cinebench 2024 (Single-Core)
Cinebench 2024 (Multi-Core)
Graphics Card
GPU name
| TGP | 15 W | 6-10 W |
| Type | Integrated | Integrated |
| Fabrication process | 10 nm | 10 nm |
| GPU base clock | 400 MHz | - |
| GPU boost clock | 1100 MHz | 750 MHz |
| FLOPS | 0.8 TFLOPS | 0.3 TFLOPS |
| Memory size | System Shared | System Shared |
| Memory type | LPDDR4X | LPDDR5 |
| Memory speed | 4.27 Gbps | 4.8 Gbps |
| Shading units (cores) | 384 | 192 |
| Texture mapping units (TMUs) | 24 | 12 |
| Raster operations pipelines (ROPs) | 12 | 6 |
| GPU performance | 0.8 TFLOPS | 0.3 TFLOPS |
RAM
RAM size
| Channels | 1x4 GB | 1x4 GB |
| Clock | 4266 MHz | 4800 MHz |
| Type | LPDDR4X | LPDDR5 |
| Upgradable | No | No |
Storage
Storage size
| Bus | PCI-E Gen 4.0 (4x) | PCI-E Gen 4.0 (4x) |
| Storage type | SSD (M2) | SSD (M2) |
| Channels | 1x128 GB | 1x256 GB |
| Upgradable | Yes | Yes |
| Total slots | 1 | 1 |
| NVMe | Yes | Yes |
Sound
| Audio chip | Realtek ALC3287 | - |
| Speakers | 2.0 | 2.0 |
| Power | 2x2W | 2x1.5W |
| Dolby Atmos | Yes | Yes |
| Loudness | ~76 dB | - |
| Microphones | 2 | 2 |
Connectivity
| Wi-Fi standard | v6 | v6 |
| Bluetooth | v5.2 | v5.2 |
| Fingerprint | Yes | Optional |
| 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 | 2x USB 3.2 |
| USB Type-C | 1x USB 4.0 | 1x USB 3.2 |
| Thunderbolt | Thunderbolt 4 | No |
| HDMI | 1x HDMI 1.4 | 1x HDMI 1.4 |
| DisplayPort | No | No |
| VGA | No | No |
| Audio jack (3.5 mm) | Yes | Yes |
| Ethernet (RJ45) | No | No |
| SD card reader | Yes | Yes |
| Proprietary charging port | Yes | Yes |
Input
| Keyboard type | Island | Island |
| Numpad | No | Yes |
| Backlight | Yes | Yes |
| Key travel | 1.5 mm | 1.7 mm |
| Size | 12.0 x 7.5 cm | 10.4 x 6.9 cm |
| Surface | Plastic | Plastic |
| Windows Precision | Yes | Yes |
Further details
Notes on IdeaPad Flex 5i (14” Intel):
- There is a plastic model that is 0.4 cm thicker than the aluminum one.
Notes on IdeaPad Slim 3i (15″, Gen 8):
- Two camera options are available: 720p and 1080p.
- Built-in 128 GB UFS 3.1 storage with a separate M.2 SSD slot.
*Disclaimer! Ports, speakers, display, and other specifications can vary depending on the laptop's specific configuration or region.
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