In depth comparison and review of Lenovo ThinkBook 15 G4 IAP (21DJ) and Lenovo ThinkBook 16 G4+ IAP (21CY). 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.
Advantages and disadvantages of Lenovo ThinkBook 15 G4 IAP (21DJ) based on its technical characteristics, features, user experience, expert reviews and price level.
robust aluminum design
efficient multitasking performance
comprehensive connectivity options
fast charging support
competitive pricing
average display quality
modest battery life
limited graphics performance
noisy under load
Advantages and disadvantages of Lenovo ThinkBook 16 G4+ IAP (21CY) based on its technical characteristics, features, user experience, expert reviews and price level.
high-resolution display
robust aluminum chassis
efficient thermal management
powerful processor performance
ample connectivity options
heavier than competitors
average battery life
premium price point
limited color options
| DESIGN AND DIMENSIONS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Product Type | Notebook - 180-degree hinge design | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.7 cm x 23.5 cm x 1.89 cm | 35.6 cm x 25.1 cm x 1.69 cm |
| Weight | 1.7 kg | 1.8 kg |
| Case Material | Aluminium (top), polycarbonate ABS (bottom) | Aluminum |
| Colour | Dual tone mineral grey | Dual tone arctic grey |
| DISPLAY | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Screen Size (Type) | 15.6" - IPS | 16" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1200 (WUXGA) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| 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, DC dimmer |
| PROCESSOR | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| 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 ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| RAM | 8 GB (provided memory is soldered) | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 40 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 | 1 | - |
| Empty Slots | 1 | - |
| STORAGE | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) | 512 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | Intel Iris Xe Graphics |
|---|---|---|
| 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 Atmos |
| COMMUNICATIONS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
|---|---|---|
| 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) | Dual stream (2x2) |
| BATTERY | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 45 Wh | 57 Wh |
| Battery Life | Up to 8 hours | - |
| Battery Run Time | Local video (1080p) playback time (150 nits): up to 8 hours | - |
| AC ADAPTER | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | 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 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Slots | - | 1 x M.2 (PCI Express 3.0 x4) (1 free) |
|---|---|---|
| Interfaces | 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 |
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) USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI USB 2.0 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 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 11 Pro - English |
|---|---|---|
| Software Included | Microsoft Office (Trial) | Microsoft Office (Trial) |
| MISCELLANEOUS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkBook 16 G4+ IAP (21CY) |
|---|
| Included Accessories | USB-C slim wall mount power adapter | USB-C slim power adapter |
|---|---|---|
| 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, MIL-STD-810H tested, Rapid Charge Pro | 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, 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 |
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