In depth comparison and review of Lenovo ThinkBook 15 G4 IAP (21DJ) and Lenovo ThinkPad X13 Gen 3 (21BQ). 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 ThinkPad X13 Gen 3 (21BQ) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard experience
impressive battery life
strong security features
portable design
average display brightness
limited graphics performance
noisy under load
higher price point
| DESIGN AND DIMENSIONS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Product Type | Notebook - 180-degree hinge design | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.7 cm x 23.5 cm x 1.89 cm | 30.58 cm x 21.756 cm x 1.81 cm |
| Weight | 1.7 kg | 1.26 kg |
| Case Material | Aluminium (top), polycarbonate ABS (bottom) | Polyphenylene sulfide (top), aluminium (bottom) |
| Colour | Dual tone mineral grey | Thunder black |
| DISPLAY | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Screen Size (Type) | 15.6" - IPS | 13.3" - 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 | 16:10 |
| Image Brightness | 300 cd/m² | 300 cd/m² |
| Colour Gamut | 45% NTSC | 72% NTSC |
| Features | Anti-glare, 170° viewing angle | Anti-glare, 170° viewing angle |
| PROCESSOR | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| CPU | Intel Core i5 (12th Gen) 1235U / 1.3 GHz | Intel Core i5 (12th Gen) 1245U / 1.6 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 ThinkPad X13 Gen 3 (21BQ) |
|---|
| 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 ThinkPad X13 Gen 3 (21BQ) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) | 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption - Union Memory |
|---|
| AUDIO & VIDEO | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| 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 - 720p |
| 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, Dolby Voice |
| COMMUNICATIONS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | M.2 Card | Intel Wi-Fi 6E AX 211 |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Intel I219-V | - |
| Features | Wake-on-LAN (WOL), dual stream (2x2) | - |
| BATTERY | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Technology | Lithium polymer | 4-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 45 Wh | 54.7 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 ThinkPad X13 Gen 3 (21BQ) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt, 5 / 9 / 15 / 20 V |
| INPUT | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| 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 (Always On) USB 3.2 Gen 1 2 x USB4 (supports Thunderbolt 4, DisplayPort 2.0 Alt Mode) (Power Delivery 3.0) HDMI Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | - |
| SOFTWARE | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence |
|---|---|---|
| Software Included | Microsoft Office (Trial) | - |
| MISCELLANEOUS | Lenovo ThinkBook 15 G4 IAP (21DJ) | Lenovo ThinkPad X13 Gen 3 (21BQ) |
|---|
| Included Accessories | USB-C slim wall mount power adapter | USB-C power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Discrete 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, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, USB FIDO (Fast Identity Online) device integration, Firmware Resiliency 3.0, certificate based BIOS authentication |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TUV Rheinland Low Blue Light (Software Solution) | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified |
| 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 | - |
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