In depth comparison and review of Lenovo ThinkPad Z16 Gen 1 (21D4) 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 Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 35.44 cm x 23.74 cm x 1.58 cm | 35.7 cm x 23.5 cm x 1.89 cm |
| Weight | 1.94 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 Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Screen Size (Type) | 16" OLED | 15.6" - IPS |
|---|---|---|
| Touchscreen | Yes (10-point multi-touch) | - |
| LCD Backlight Technology | - | LED backlight |
| Screen Resolution | 3840 x 2400 (WQUXGA) | 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% DCI-P3 | 45% NTSC |
| Features | Anti-reflective, One Glass Solution, anti-smudge, Low Blue Light technology, Dolby Vision, 92.3% screen-to-body ratio | Anti-glare, 170° viewing angle |
| PROCESSOR | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| CPU | AMD Ryzen 9 Pro 6950H / 3.3 GHz | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | 4.9 GHz | 4.4 GHz |
| Number of Cores | 8-core | 10-core |
| Cache | L3 - 16 MB | 12 MB |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| RAM | 32 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 Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Main Storage Size (HDD/SSD) | 1 TB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe), Performance | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | AMD Radeon RX 6500M / AMD Radeon 680M | Intel Iris Xe Graphics |
| Max Monitors Supported | 3 external monitor(s) | 3 external monitor(s) |
| Video Memory | 4 GB GDDR6 SDRAM | - |
| 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, Dolby Voice | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Wireless | Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 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) |
| WWAN |
|---|
| Generation | 4G | - |
|---|---|---|
| Technology | LTE | - |
| Controller | Quectel EM05-G - M.2 Card | - |
| BATTERY | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 72 Wh | 45 Wh |
| Battery Life | - | Up to 8 hours |
| Battery Run Time | - | Local video (1080p) playback time (150 nits): up to 8 hours |
| AC ADAPTER | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 135 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad Z16 Gen 1 (21D4) | 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, Fn keys with Unified Communications controls, glass touchpad | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Slots | 1 x Nano-SIM card (1 free) | - |
|---|---|---|
| Interfaces | 3 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 | Yes (SD Card, SDXC UHS-II Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad Z16 Gen 1 (21D4) | 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 Z16 Gen 1 (21D4) | Lenovo ThinkBook 15 G4 IAP (21DJ) |
|---|
| Included Accessories | USB-C slim 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 | 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, 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 Base warranty - battery - 1 year Extended warranty - 3 years - on-site |
Limited warranty - 1 year - pick-up and return |
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