In depth comparison and review of Lenovo ThinkPad Z13 Gen 1 (21D2) and Lenovo ThinkBook 15 G4 IAP (21DJ). 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.
| DESIGN AND DIMENSIONS | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 29.94 cm x 19.96 cm x 1.399 cm | 35.7 cm x 23.5 cm x 1.89 cm |
| Weight | 1.19 kg | 1.7 kg |
| Case Material | Aluminium (top), aluminium (bottom) | Aluminium (top), polycarbonate ABS (bottom) |
| Colour | Black (bottom), arctic grey (top) | Dual tone mineral grey |
| DISPLAY | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Screen Size (Type) | 13.3" - IPS | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1200 (WUXGA) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:9 |
| Image Brightness | 400 cd/m² | 300 cd/m² |
| Colour Gamut | 100% sRGB | 45% NTSC |
| Features | Anti-glare, 178° viewing angle, Low Power, 91.6% screen-to-body ratio | Anti-glare, 170° viewing angle |
| PROCESSOR | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| CPU | AMD Ryzen 5 Pro 6650U / 2.9 GHz | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | 4.5 GHz | 4.4 GHz |
| Number of Cores | 6-core | 10-core |
| Cache | 16 MB | 12 MB |
| Features | - | Integrated memory controller |
| MEMORY | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| RAM | 16 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | - | 40 GB |
| RAM Type | LPDDR5 SDRAM | DDR4 SDRAM |
| Speed | 6400 MHz | 3200 MHz |
| Rated Speed | 6400 MHz | 3200 MHz |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Graphics Processor (GPU) | AMD Radeon 660M | Intel Iris Xe Graphics |
|---|---|---|
| Max Monitors Supported | 2 external monitor(s) | 3 external monitor(s) |
| Camera | Yes - 1080p | Yes - 1080p |
| Camera Features | IR camera, Windows Hello, e-camera shutter | Privacy shutter, fixed focus |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3306 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio, Dolby Atmos | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
|---|---|---|
| Wireless Controller | Qualcomm NFA725A | M.2 Card |
| Network Interface | - | Gigabit Ethernet |
| Ethernet Controller | - | Intel I219-V |
| Compliant Standards | DASH | - |
| Features | Dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
| BATTERY | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 51.5 Wh | 45 Wh |
| Battery Life | Up to 22.8 hours | Up to 8 hours |
| Battery Run Time | - | Local video (1080p) playback time (150 nits): up to 8 hours |
| AC ADAPTER | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, haptic feedback, Fn keys with Unified Communications controls, glass touchpad | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Interfaces | 2 x USB4 (supports DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) 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) |
| SOFTWARE | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 11 Pro - English |
|---|---|---|
| Software Included | Glance by Mirametrix | Microsoft Office (Trial) |
| MISCELLANEOUS | Lenovo ThinkPad Z13 Gen 1 (21D2) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Included Accessories | USB-C power adapter | USB-C slim wall mount power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip with Microsoft Pluton, fingerprint reader | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | - | Kensington nano security slot |
| Theft/Intrusion Protection | - | Security lock slot (cable lock sold separately) |
| Features | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password, USB FIDO (Fast Identity Online) device integration, pen upgradable, certificate based BIOS authentication | Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro |
| Compliant Standards | RoHS, TUV Rheinland Low Blue Light Certification, 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 - 3 years - pick-up and return Extended warranty - 3 years - on-site - response time: next business day |
Limited warranty - 1 year - pick-up and return |
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