Side by side comparison and review of Dell G15 (5520) and Lenovo ThinkPad Z13 Gen 1 (21D3). 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.
Advantages and disadvantages of Dell G15 (5520) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful gaming performance
efficient thermal management
solid build quality
affordable price point
good audio quality
heavy and bulky
average battery life
dim display brightness
limited port selection
Advantages and disadvantages of Lenovo ThinkPad Z13 Gen 1 (21D3) based on its technical characteristics, features, user experience, expert reviews and price level.
excellent build quality
powerful amd processor
bright oled display
eco-friendly materials
solid security features
higher price point
limited port selection
no dedicated gpu
average battery life
| DESIGN AND DIMENSIONS | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.726 cm x 27.211 cm x 2.533 cm | 29.44 cm x 19.96 cm x 1.399 cm |
| Weight | 2.81 kg | 1.26 kg |
| Case Material | - | Aluminium (top), aluminium (bottom) |
| Colour | Dark shadow grey | Black (bottom), arctic grey (top) |
| DISPLAY | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Screen Size (Type) | 15.6" | 13.3" OLED |
|---|---|---|
| Touchscreen | - | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 2880 x 1800 (2.8K) |
| Pixel Density (ppi) | 141 | - |
| V-Sync Rate at Max Res. | 165 Hz | - |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | 300 cd/m² | 500 cd/m² |
| Colour Gamut | 100% sRGB | 100% DCI-P3 |
| Features | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle, Narrow Border Display, 0.17925 mm pixel pitch, 13 ms response rate | Anti-reflective, One Glass Solution, anti-smudge, on-cell touch technology, Low Blue Light technology, Dolby Vision, 91.6% screen-to-body ratio |
| PROCESSOR | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| CPU | Intel Core i7 (12th Gen) 12700H | AMD Ryzen 7 Pro 6850U / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 4.7 GHz |
| Number of Cores | 14-core | 8-core |
| Cache | 24 MB | L3 - 16 MB |
| Features | Intel Smart Cache, Intel Deep Learning Boost (DL Boost) | Integrated memory controller |
| MEMORY | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| RAM | 16 GB (2 x 8 GB) | 32 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 32 GB | - |
| RAM Type | DDR5 SDRAM | LPDDR5 SDRAM |
| Speed | 4800 MHz | 6400 MHz |
| Rated Speed | 4800 MHz | 6400 MHz |
| Form Factor | SO-DIMM 262-pin | - |
| Slots Qty | 2 | - |
| Empty Slots | 0 | - |
| STORAGE | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 PCIe 4.0 x4 - NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption - Union Memory |
|---|
| AUDIO & VIDEO | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Graphics Processor (GPU) | NVIDIA GeForce RTX 3060 | AMD Radeon 680M |
|---|---|---|
| Max Monitors Supported | - | 2 external monitor(s) |
| Video Memory | 6 GB GDDR6 SDRAM | - |
| Gaming | Yes | - |
| Camera | Yes - HD | Yes - 1080p |
| Resolution | 0.92 Megapixel | - |
| Camera Features | RGB camera | Windows Hello, fixed focus, e-camera shutter, Discrete IR |
| Image Sensor Type | CMOS | - |
| Video Resolutions | 1280 x 720 | - |
| Frame Rate | 30 frames per second | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3254 | Realtek ALC3306 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Atmos |
| Audio Features | - | Input: Dolby Voice, 360° far-field |
| COMMUNICATIONS | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| 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 2230 | Qualcomm NFA725A |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | Killer Ethernet E2600 | - |
| Features | Dual stream (2x2) | - |
| BATTERY | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Technology | 6-cell Lithium Ion | 3-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 86 Wh | 51.5 Wh |
| Battery Life | Up to 9 hour(s) | - |
| AC ADAPTER | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 19.5 V | 65 Watt |
| INPUT | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | Yes | Yes |
| Features | - | Spill-resistant, multi-touch touchpad, edge-to-edge backlit keyboard, Fn keys with Unified Communications controls, glass touchpad, Haptic ForcePad |
| CONNECTIONS & EXPANSIONS | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Interfaces | HDMI 3 x USB 3.2 Gen 1 Thunderbolt 4 LAN Headphone/microphone combo jack |
2 x USB4 (supports DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack LAN (on supplied adapter) |
|---|
| SOFTWARE | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Operating System (OS) | Windows 11 Home | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence |
|---|---|---|
| Software Included | Microsoft Office 2013 (Trial) | - |
| MISCELLANEOUS | Dell G15 (5520) | Lenovo ThinkPad Z13 Gen 1 (21D3) |
|---|
| Included Accessories | Power adapter | USB-C power adapter, Lenovo USB-C to Ethernet Adapter |
|---|---|---|
| Security | - | Discrete Trusted Platform Module (TPM 2.0) Security Chip with Microsoft Pluton, fingerprint reader |
| Features | - | Administrator password, system password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication |
| Compliant Standards | - | RoHS, TUV Rheinland Low Blue Light Certification, Energy-Related Products (ErP) Lot 3, TCO Certified 9.0 |
| Carbon Footprint | - | 216 kg carbon emissions (EU) |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 0 °C | 5 °C |
| Humidity Range Operating | 10 - 90% (non-condensing) | 8 - 95% |
| Manufacturer Warranty | Limited warranty - 1 year | - |
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