Side by side comparison and review of Lenovo ThinkPad E15 Gen 4 (21E6) and HP EliteBook 645 G10 Notebook. 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 Lenovo ThinkPad E15 Gen 4 (21E6) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
efficient performance
comfortable keyboard
good security features
reasonable price
average display quality
moderate battery life
limited graphics capability
no thunderbolt support
Advantages and disadvantages of HP EliteBook 645 G10 Notebook based on its technical characteristics, features, user experience, expert reviews and price level.
robust security features
responsive keyboard design
long battery life
lightweight and portable
powerful AMD processor
limited storage capacity
no 4K display option
average sound quality
higher price point
| DESIGN AND DIMENSIONS | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 36.5 cm x 24 cm x 1.89 cm | 32.19 cm x 21.39 cm x 1.99 cm |
| Weight | 1.7 kg | 1.4 kg |
| Case Material | Aluminium (top), polycarbonate ABS (bottom) | - |
| Colour | Black | Pike silver aluminium |
| DISPLAY | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Screen Size (Type) | 15.6" - IPS | 14" |
|---|---|---|
| LCD Backlight Technology | LED backlight | WLED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | - |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | - |
| Image Brightness | 300 cd/m² | - |
| Colour Gamut | 45% NTSC | - |
| Features | Anti-glare, 170° viewing angle | - |
| PROCESSOR | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| CPU | Intel Core i5 (12th Gen) 1235U / 1.3 GHz | AMD Ryzen 5 Pro 7530U / 2 GHz |
|---|---|---|
| Max Turbo Speed | 4.4 GHz | 4.5 GHz |
| Number of Cores | 10-core | 6-core |
| Cache | 12 MB | L3 - 16 MB |
| Features | Integrated memory controller | AMD Simultaneous Multithreading (SMT), AMD Precision Boost 2 Technology |
| MEMORY | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| RAM | 8 GB (provided memory is soldered) | 0 GB |
|---|---|---|
| Max RAM Supported | 40 GB | 64 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 3200 MHz | - |
| Rated Speed | 3200 MHz | - |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 2 |
| Empty Slots | 1 | 2 |
| STORAGE | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | - |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | AMD Radeon Graphics |
|---|---|---|
| Max Monitors Supported | 2 external monitor(s) | - |
| Camera | Yes - 1080p | - |
| Camera Features | Privacy shutter, IR camera, Windows Hello, fixed focus | - |
| Sound | Stereo speakers, dual array microphone | Dual stereo speakers, dual array microphone |
| Codec | Realtek ALC3287 | Realtek ALC3247-CG |
| Compliant Standards | High Definition Audio, Dolby Audio | - |
| Audio Features | Harman-branded | - |
| COMMUNICATIONS | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | - |
|---|---|---|
| Wireless Controller | M.2 Card | - |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Intel I219-V | - |
| Features | Wake-on-LAN (WOL), dual stream (2x2) | - |
| BATTERY | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Technology | Lithium polymer | 3-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 57 Wh | - |
| Battery Life | Up to 15.6 hours | - |
| AC ADAPTER | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Input | AC 100-240 V (50/60 Hz) | - |
|---|---|---|
| Output | 65 Watt | - |
| INPUT | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, ClickPad |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | Yes | - |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Multi-touch clickpad, gesture function, spill-resistant |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Interfaces | USB 2.0 USB 3.2 Gen 1 (Always On) USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery) LAN (RJ-45) 2 x USB 3.2 Gen 1 HDMI 2.1 Headphone/microphone combo jack USB 3.2 Gen 1 (powered) |
|---|
| SOFTWARE | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Operating System (OS) | Windows 11 Pro - English | No operating system |
|---|
| MISCELLANEOUS | Lenovo ThinkPad E15 Gen 4 (21E6) | HP EliteBook 645 G10 Notebook |
|---|
| Included Accessories | USB-C power adapter | - |
|---|---|---|
| Integrated Options | - | HP Tamper Lock |
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Trusted Platform Module (TPM 2.0) Security Chip |
| Security Slot Type | Kensington security slot | Kensington nano security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately), chassis intrusion sensor |
| Features | Administrator password, power-on password, MIL-STD-810H tested, self-healing BIOS, NVMe password | BIOS Absolute Persistence, HP Fast Charge, BIOS Update via Network, MIL-STD-810H tested, Secured-core PC enabled |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified, TUV Rheinland Low Blue Light (Software Solution) | CSA, VCCI, BSMI, GOST, GS, SABS, CCC, FIPS 140-2 Level 2, FCC, A-Tick, ICES, Common Criteria EAL4+, KC, CECP, SRRC, CIT, low halogen, UL 62368-1, ICCP, TEC, KES, BNCI, Ukraine NSoC, EAEU Compliance, Saudi Arabian Compliance |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Gold | - |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 5 °C | 0 °C |
| Humidity Range Operating | 8 - 95% | 10 - 90% (non-condensing) |
| Manufacturer Warranty | Base warranty - 1 year - pick-up and return Extended warranty - 1 year - on-site |
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