In depth comparison and review of Dell Latitude 7640 and Lenovo ThinkPad L15 Gen 3 (21C7). 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 Dell Latitude 7640 based on its technical characteristics, features, user experience, expert reviews and price level.
robust security features
high-resolution display
powerful processor performance
lightweight design
excellent connectivity options
higher price point
average battery life
limited color options
noisy under load
Advantages and disadvantages of Lenovo ThinkPad L15 Gen 3 (21C7) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
good battery life
adequate performance level
reliable security features
average display quality
limited graphics power
heavier than competitors
no thunderbolt support
| DESIGN AND DIMENSIONS | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 35.8 cm x 25.042 cm x 1.95 cm | 36.02 cm x 23.7 cm x 1.993 cm |
| Weight | 1.837 kg | 1.76 kg |
| Case Material | Aluminum | Polycarbonate ABS (bottom), polycarbonate ABS (top) |
| Colour | - | Thunder black |
| DISPLAY | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Screen Size (Type) | 16" - IPS | 15.6" - IPS |
|---|---|---|
| Screen Resolution | 1920 x 1200 (Full HD Plus) | 1920 x 1080 (Full HD) |
| Pixel Density (ppi) | 141.5 | - |
| V-Sync Rate at Max Res. | 60 Hz | - |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | - | 16:9 |
| Image Brightness | 250 cd/m² | 250 cd/m² |
| Colour Gamut | 45% NTSC | 45% NTSC |
| Features | Anti-glare, 35 ms response rate, 85° horizontal and vertical viewing angle, 0.17952 mm pixel pitch | Anti-glare |
| PROCESSOR | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| CPU | Intel Core i5 (13th Gen) 1345U / 1.6 GHz | AMD Ryzen 3 Pro 5475U / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 4.1 GHz |
| Number of Cores | 10-core | Quad-Core |
| Cache | L3 - 12 MB | L3 - 8 MB |
| Platform Technology | Intel vPro Enterprise | - |
| Features | Intel Smart Cache | Integrated memory controller |
| MEMORY | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| RAM | 16 GB (provided memory is soldered) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | - | 64 GB |
| RAM Type | LPDDR5 SDRAM | DDR4 SDRAM |
| Speed | 4800 MHz | 3200 MHz |
| Rated Speed | 4800 MHz | 3200 MHz |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 2 |
| Empty Slots | - | 1 |
| STORAGE | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2230 PCIe 4.0 x4 - NVM Express (NVMe), Class 35 | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | AMD Radeon Graphics |
|---|---|---|
| Max Monitors Supported | - | 3 external monitor(s) |
| Video System Features | Functions as Intel UHD graphics (for single-channel memory) | - |
| Camera | Yes - 1920 x 1080 (standard), 640 x 360 (infrared) | Yes - 1080p |
| Camera Features | Privacy shutter, IR/RGB camera, Temporal Noise Reduction, 80 degrees, 86.6 degrees (IR camera) | Privacy shutter, Windows Hello, fixed focus, hybrid FHD/IR camera |
| Image Sensor Type | CMOS | - |
| Video Resolutions | 1920 x 1080, 640 x 360 | - |
| Frame Rate | 30 frames per second | - |
| Sound | Four stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3281 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Audio |
| Audio Features | - | Input: Dolby Voice, far-field |
| COMMUNICATIONS | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Wireless | Bluetooth, NFC, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6E AX 211 | AMD RZ616 - M.2 Card |
| Network Interface | - | Gigabit Ethernet |
| Ethernet Controller | - | Realtek RTL8111EPV |
| Compliant Standards | - | DASH |
| Features | Dual stream (2x2), WWAN aerial | Wake-on-LAN (WOL), dual stream (2x2) |
| BATTERY | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Technology | 3-cell Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 57 Wh | 57 Wh |
| AC ADAPTER | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 5 / 9 / 15 / 20 V | 65 Watt |
| INPUT | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Type | Keyboard, ClickPad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Mini LED backlit, 80-key | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Interfaces | HDMI 2 x USB4 (supports Thunderbolt 4, DisplayPort Alt Mode) (Power Delivery) USB 3.2 Gen 1 (PowerShare) USB 3.2 Gen 1 Headphone/microphone combo jack |
USB-C 3.2 Gen 1 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) HDMI (4K support) USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack LAN |
|---|---|---|
| Memory Card Reader | - | Yes (microSD) |
| SOFTWARE | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Operating System (OS) | Windows 11 Pro - Dutch / English / French / German / Italian | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English / Portuguese |
|---|---|---|
| Software Included | Microsoft Office (30 days trial, excludes office licence) | Glance by Mirametrix |
| MISCELLANEOUS | Dell Latitude 7640 | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Included Accessories | USB-C power adapter | USB-C power adapter |
|---|---|---|
| Integrated Options | Accelerometer, hall sensor | - |
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader, contactless smart card reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader |
| Security Slot Type | Noble Wedge security slot | Kensington nano security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | ExpressCharge, ExpressChargeBoost | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password |
| Compliant Standards | FIPS 140-2, TCG Certified, TCO Certified 9.0 | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified |
| Carbon Footprint | - | 236 kg carbon emissions |
| 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 - pick-up and return |
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