Lenovo ThinkPad L15 Gen 3 (21C3) vs. Lenovo ThinkBook 14 G4+ IAP (21CX)

Laptop Comparison, Reviews and Tests

In depth comparison and review of Lenovo ThinkPad L15 Gen 3 (21C3) and Lenovo ThinkBook 14 G4+ IAP (21CX). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.

Lenovo ThinkPad L15 Gen 3 (21C3) Review

Advantages and disadvantages of Lenovo ThinkPad L15 Gen 3 (21C3) based on its technical characteristics, features, user experience, expert reviews and price level.

robust build quality

excellent keyboard feel

good battery life

reliable performance

decent connectivity options

mediocre display quality

heavier design

limited graphics performance

higher price point

Lenovo ThinkBook 14 G4+ IAP (21CX) Review

Advantages and disadvantages of Lenovo ThinkBook 14 G4+ IAP (21CX) based on its technical characteristics, features, user experience, expert reviews and price level.

robust aluminum design

efficient thermal management

sharp full hd display

modern connectivity options

fast ssd storage

average battery life

no dedicated gpu

limited color accuracy

higher price segment

Laptop Comparison and Tests

Difference between Lenovo ThinkPad L15 Gen 3 (21C3) and Lenovo ThinkBook 14 G4+ IAP (21CX)
85 % - Design
72 % - Display
75 % - Performance
85 % - Connectivity
75 % - Battery
85 % - Design
75 % - Display
71 % - Performance
85 % - Connectivity
76 % - Battery

Laptop Specifications Comparison

Lenovo ThinkPad L15 Gen 3 (21C3) vs. Lenovo ThinkBook 14 G4+ IAP (21CX) Comparison Chart
DESIGN AND DIMENSIONS Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Product Type Notebook - 180-degree hinge design Notebook
Dimensions (WxDxH) 36.02 cm x 23.7 cm x 1.993 cm 31.2 cm x 22.4 cm x 1.65 cm
Weight 1.76 kg 1.4 kg
Case Material Polycarbonate ABS (bottom), polycarbonate ABS (top) Aluminium (top), aluminium (bottom)
Colour Thunder black Dual tone arctic grey
DISPLAY Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Screen Size (Type) 15.6" - IPS 14" - IPS
LCD Backlight Technology LED backlight LED backlight
Screen Resolution 1920 x 1080 (Full HD) 1920 x 1200 (WUXGA)
Widescreen Yes Yes
Image Aspect Ratio 16:9 16:9
Image Brightness 250 cd/m² 300 cd/m²
Colour Gamut 45% NTSC 45% NTSC
Features Anti-glare, 170° viewing angle Anti-glare
PROCESSOR Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
CPU Intel Core i5 (12th Gen) 1235U / 1.3 GHz Intel Core i5 (12th Gen) 1235U / 1.3 GHz
Max Turbo Speed 4.4 GHz 4.4 GHz
Number of Cores 10-core 10-core
Cache 12 MB 12 MB
Features Integrated memory controller Integrated memory controller
MEMORY Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
RAM 8 GB (2 x 4 GB) 16 GB (provided memory is soldered)
Max RAM Supported 64 GB -
RAM Type DDR4 SDRAM LPDDR5 SDRAM
Speed 3200 MHz 4800 MHz
Rated Speed 3200 MHz 4800 MHz
Form Factor SO-DIMM 260-pin -
Slots Qty 2 -
Empty Slots 0 -
STORAGE Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Main Storage Size (HDD/SSD) 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) 512 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe)
AUDIO & VIDEO Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Graphics Processor (GPU) Intel Iris Xe Graphics Intel Iris Xe Graphics
Max Monitors Supported 3 external monitor(s) 3 external monitor(s)
Video System Features Functions as Intel UHD graphics (for single-channel memory) -
Camera Yes - 1080p Yes - 1080p
Camera Features Privacy shutter, IR camera, Windows Hello, fixed focus Privacy shutter, fixed focus
Sound Stereo speakers, dual array microphone Stereo speakers, dual array microphone
Codec Realtek ALC3287 Realtek ALC3287
Compliant Standards High Definition Audio, Dolby Audio, Dolby Voice High Definition Audio, Dolby Audio
COMMUNICATIONS Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Wireless 802.11a/b/g/n/ac/ax, Bluetooth 5.2 802.11a/b/g/n/ac/ax, Bluetooth 5.2
Wireless Controller Intel Wi-Fi 6 AX 201 - M.2 Card M.2 Card
Network Interface Gigabit Ethernet Gigabit Ethernet
Features Wake-on-LAN (WOL), dual stream (2x2) Dual stream (2x2)
WWAN
Generation 4G upgradable -
BATTERY Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Technology Lithium polymer Lithium polymer
Battery Capacity (Size) 57 Wh 46.5 Wh
AC ADAPTER Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Input AC 100-240 V (50/60 Hz) AC 100-240 V (50/60 Hz)
Output 65 Watt 100 Watt
INPUT Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Type Keyboard, TrackPoint, UltraNav Keyboard, touchpad
Numeric Keypad Yes -
Keyboard Backlight Yes Yes
Features Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad
CONNECTIONS & EXPANSIONS Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Slots - 1 x M.2 (PCI Express 3.0 x4) (1 free)
1 x M.2 (PCI Express 4.0 x4) (0 free)
Interfaces USB 3.2 Gen 1
USB 3.2 Gen 1 (Always On)
USB-C 3.2 Gen 1 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
Headphone/microphone combo jack
HDMI
LAN
USB 2.0 (hidden)
USB 3.2 Gen 1
USB 3.2 Gen 1 (Always On)
HDMI
USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
LAN
Headphone/microphone combo jack
Memory Card Reader Yes (microSD) 3 in 1 (SD Card, SDHC Card, SDXC Card)
SOFTWARE Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Operating System (OS) Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English Windows 11 Pro - English
Software Included - Microsoft Office (Trial)
MISCELLANEOUS Lenovo ThinkPad L15 Gen 3 (21C3) Lenovo ThinkBook 14 G4+ IAP (21CX)
Included Accessories USB-C power adapter USB-C slim wall mount power adapter
Security Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader
Security Slot Type Kensington nano security slot Kensington nano security slot
Theft/Intrusion Protection Security lock slot (cable lock sold separately) Security lock slot (cable lock sold separately)
Features Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro, self-healing BIOS
Compliant Standards RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified RoHS, Energy-Related Products (ErP) Lot 3, TUV Rheinland Low Blue Light (Software Solution)
ENERGY STAR Certified Yes Yes
EPEAT Compliant EPEAT Gold EPEAT Gold
Max Operating Temperature 35 °C 35 °C
Min Operating Temperature 5 °C 5 °C
Humidity Range Operating 8 - 95% 8 - 95%
Manufacturer Warranty Base warranty - 1 year - pick-up and return
Extended warranty - 1 year - on-site
Limited warranty - 1 year - pick-up and return
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