Side by side comparison and review of Lenovo ThinkBook 14 G4 IAP (21DH) and Lenovo ThinkBook 15 G4 IAP (21DJ). Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.
DESIGN AND DIMENSIONS | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Product Type | Notebook | Notebook - 180-degree hinge design |
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Dimensions (WxDxH) | 32.3 cm x 21.8 cm x 1.79 cm | 35.7 cm x 23.5 cm x 1.89 cm |
Weight | 1.4 kg | 1.7 kg |
Case Material | Aluminium (top), aluminium (bottom) | Aluminium (top), polycarbonate ABS (bottom) |
Colour | Dual tone mineral grey | Dual tone mineral grey |
DISPLAY | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Screen Size (Type) | 14" - IPS | 15.6" - IPS |
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LCD Backlight Technology | LED backlight | LED backlight |
Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:9 |
Image Brightness | 300 cd/m² | 300 cd/m² |
Colour Gamut | 45% NTSC | 45% NTSC |
Features | Anti-glare, 170° viewing angle | Anti-glare, 170° viewing angle |
PROCESSOR | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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CPU | Intel Core i5 (12th Gen) 1235U / 1.3 GHz | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
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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 ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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RAM | 8 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
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Max RAM Supported | 40 GB | 40 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 3200 MHz | 3200 MHz |
Rated Speed | 3200 MHz | 3200 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 1 |
Empty Slots | 1 | 1 |
STORAGE | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) |
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AUDIO & VIDEO | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Graphics Processor (GPU) | Intel Iris Xe Graphics | Intel Iris Xe Graphics |
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Max Monitors Supported | 3 external monitor(s) | 3 external monitor(s) |
Camera | Yes - 1080p | Yes - 1080p |
Camera Features | Privacy shutter, 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 | High Definition Audio, Dolby Audio |
COMMUNICATIONS | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
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Wireless Controller | M.2 Card | M.2 Card |
Network Interface | Gigabit Ethernet | Gigabit Ethernet |
Ethernet Controller | - | Intel I219-V |
Features | Wake-on-LAN (WOL), dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
BATTERY | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Technology | Lithium polymer | Lithium polymer |
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Battery Capacity (Size) | 45 Wh | 45 Wh |
Battery Life | Up to 8 hours | Up to 8 hours |
Battery Run Time | Local video (1080p) playback time (150 nits): up to 8 hours | Local video (1080p) playback time (150 nits): up to 8 hours |
AC ADAPTER | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 65 Watt | 65 Watt |
INPUT | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Type | Keyboard, touchpad | Keyboard, touchpad |
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Numeric Keypad | - | Yes |
Keyboard Backlight | Yes | Yes |
Features | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad |
CONNECTIONS & EXPANSIONS | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Slots | 2 x M.2 (PCI Express 4.0 x4) (1 free) | - |
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Interfaces | USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB-C (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
2 x USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
SOFTWARE | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Operating System (OS) | Windows 11 Pro - English | Windows 11 Pro - English |
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Software Included | Microsoft Office (Trial) | Microsoft Office (Trial) |
MISCELLANEOUS | Lenovo ThinkBook 14 G4 IAP (21DH) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
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Included Accessories | USB-C slim wall mount power adapter | USB-C slim wall mount power adapter |
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Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint 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, hard drive password, power-on password, Rapid Charge Pro | Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro |
Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 6, TUV Rheinland Low Blue Light (Software Solution) | 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 | Limited warranty - 1 year - pick-up and return | Limited warranty - 1 year - pick-up and return |