Lenovo IdeaPad Slim 5i 14" (2021, Intel) vs Dell Inspiron 15 5515

You can select specific configurations for the laptops to get a more accurate comparative review
Display 1920 x 1080
Battery 56.5 Wh
CPU Intel Core i5 1135G7
RAM
Storage

Review

Evaluation of Lenovo IdeaPad Slim 5i 14" (2021, Intel) and Dell Inspiron 15 5515 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
Case
Design, materials, durability and usability

Key Differences

What are the key differences between the notebooks
Advantages of the Lenovo IdeaPad Slim 5i 14" (2021, Intel)
  • Easier to carry: weighs 250 grams less (around 0.55 lbs)
  • Features a much bigger (~38%) battery – 56.5 against 41 watt-hours
  • Around 8% better multi-core CPU performance in the Cinebench R23 test
  • Much smaller footprint: 17% more compact case (105.4 vs 126.3 square inches)
  • Provides 20% higher max. screen brightness: 300 vs 250 nits
Advantages of the Dell Inspiron 15 5515
  • Thinner bezels and 4% higher screen-to-body ratio
  • User-upgradable RAM (up to 32GB)
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Tests and Specifications

Comparison table of test results and technical specs

Case

Weight 1.39 kg (3.06 lbs) 1.64 kg (3.62 lbs)
Dimensions 321.5 x 211.5 x 17.9 mm
12.66 x 8.33 x 0.7 inches
356 x 228.9 x 14.6-17.9 mm
14.02 x 9.01 x 0.57-0.7 inches
Area 680 cm2 (105.5 inches2) 815 cm2 (126.3 inches2)
Screen-to-body ratio ~79.4% ~82.4%
Side bezels 5.8 mm 5.3 mm
Colors Silver, Gray Blue
Transformer No No
Size comparison
Cooling solution
Cooling system Active Active
Vapor chamber No No
Number of fans 1 1

Display

Size 14 inches 15.6 inches
Type TN LCD IPS LCD
Refresh rate 60 Hz 60 Hz
PPI 157 ppi 141 ppi
Aspect ratio 16:9 16:9
Resolution 1920 x 1080 pixels 1920 x 1080 pixels
HDR support No No
Touchscreen No No
Coating Matte Matte
Display tests
Contrast - 600:1
sRGB color space - 55.7%
Adobe RGB profile - 38.4%
DCI-P3 color gamut - 39.5%
Response time - 35 ms
Max. brightness

Battery

Capacity
Voltage - 11.25 V
Battery type Li-Po Li-Po
Replaceable No No
Fast charging Yes Yes
USB Power Delivery Yes Yes
Charging port position Left Left
Charge power 65 W 65 W

CPU

CPU name
Base frequency 0.9-2.4 GHz 2.6 GHz
Turbo frequency 4.2 GHz 3.8 GHz
Cores 4 4
Threads 8 8
L3 Cache 8 MB 4 MB
Integrated GPU Iris Xe Graphics G7 80EU Radeon RX Vega 6
Fabrication process 10 nm 7 nm

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

Graphics Card

GPU name
TGP - 15 W
Type Dedicated Integrated
Fabrication process 12 nm 7 nm
GPU base clock 720-1395 MHz 0 MHz
GPU boost clock 930-1575 MHz 1500 MHz
FLOPS 2.822 TFLOPS -
Memory size 2 GB System Shared
Memory type GDDR6 DDR4
Memory bus 64 bit -
Memory speed ~8-10 Gbps 3.2 Gbps
Shading units 896 384
DirectX support 12 12.1
GPU performance

RAM

RAM size
Channels 1x4 GB 2x4 GB
Clock 3200 MHz 3200 MHz
Type DDR4 DDR4
Upgradable No Yes
Total slots 2 2
Max. ram size - 32 GB

Storage

Storage size
Bus PCI-E Gen 3.0 (4x) PCI-E Gen 3.0 (4x)
Storage type SSD (M2) SSD (M2)
Channels 1x256 GB 1x256 GB
Upgradable Yes Yes
Total slots 1 2
NVMe Yes Yes

Sound

Audio chip - Realtek
Speakers 2.0 2.0
Power 2x2W 2x2W
Dolby Atmos - No
Microphones 2 2

Connectivity

Wi-Fi standard v6 v6
Bluetooth v5.1 v5.1
Fingerprint Yes Yes
Optical drive No No
Webcam Above the display Above the display
Webcam resolution 1280 x 720 1280 x 720
Ports
USB-A 2x USB 3.2 2x USB 3.2
USB Type-C 1x USB 3.2 1x USB 3.2
Thunderbolt No 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
Keyboard type Island Island
Numpad No Yes
Backlight Yes Yes
Key travel - 1.3 mm
Touchpad
Size - 11.5 x 8.0 cm
Windows Precision Yes Yes
*Disclaimer! Ports, speakers, display, and other specifications can be different depending on the laptop’s particular configuration or region.

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