In depth comparison and review of Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) and HP Pro c640 Chromebook. 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 Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Product Type | Chromebook | Chromebook |
|---|---|---|
| Dimensions (WxDxH) | 32.8 cm x 22.5 cm x 1.77 cm | 32.5 cm x 20.5 cm x 1.65 cm |
| Weight | 1.48 kg | 1.5 kg |
| Case Material | Aluminum, polycarbonate ABS | - |
| Colour | Mineral grey | Pike silver aluminium |
| DISPLAY | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Screen Size (Type) | 14" - TN | 14" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | WLED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | - |
| Image Brightness | 220 cd/m² | 250 cd/m² |
| Colour Gamut | - | 45% NTSC |
| Features | Anti-glare | Slim Design, Full HD ultra wide-viewing angle (UWVA) eDP anti-glare |
| PROCESSOR | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| CPU | AMD A4 9120C / 1.6 GHz | Intel Pentium Gold 6405U / 2.4 GHz |
|---|---|---|
| Max Turbo Speed | 2.4 GHz | - |
| Number of Cores | Dual-Core | Dual-Core |
| Cache | L2 - 1 MB | 2 MB |
| 64-bit Computing | Yes | Yes |
| Features | Integrated memory controller | - |
| MEMORY | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| RAM | 4 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | DDR4 SDRAM | DDR4 SDRAM - non-ECC |
| Speed | 1666 MHz | 2400 MHz |
| Rated Speed | 1666 MHz | 2666 MHz |
| STORAGE | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Main Storage Size (HDD/SSD) | 32 GB eMMC - eMMC 5.1 | 32 GB eMMC - eMMC 5.0 |
|---|
| AUDIO & VIDEO | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Graphics Processor (GPU) | AMD Radeon R4 | Intel UHD Graphics |
|---|---|---|
| Memory Allocation Technology | - | Shared Video Memory (UMA) |
| Camera | Yes - 720p | Yes - HD |
| Resolution | 1 Megapixel | - |
| Camera Features | - | HP Privacy HD |
| Video Resolutions | - | 720p |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | MAX98357A | - |
| Compliant Standards | High Definition Audio | High Definition Audio |
| Audio Features | - | Bang & Olufsen Audio |
| COMMUNICATIONS | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | 802.11a/b/g/n/ac/ax, Bluetooth 5.1 |
|---|---|---|
| Wireless Controller | Qualcomm QCA6174A - M.2 Card | Intel Wi-Fi 6 AX 201 |
| Bluetooth Class | - | Class 2 |
| Compliant Standards | - | IEEE 802.11d, IEEE 802.11i, Wi-Fi CERTIFIED, IEEE 802.11h, IEEE 802.11e, IEEE 802.11k, IEEE 802.11r, IEEE 802.11v |
| Features | Dual stream (2x2) | Miracast, dual stream (2x2), MU-MIMO |
| BATTERY | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Technology | Lithium Ion | 3-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 57 Wh | 60 Wh |
| Battery Life | Up to 10 hours | Up to 12 hours |
| AC ADAPTER | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 115/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt | 45 Watt, 5 / 9 / 12 / 15 V |
| INPUT | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Type | Keyboard, touchpad | Keyboard, ClickPad |
|---|---|---|
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | Multi-touch clickpad, gesture function |
| CONNECTIONS & EXPANSIONS | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Interfaces | 2 x USB 3.1 Gen 1 2 x USB-C 3.1 Gen 1 Headphone/microphone combo jack |
HDMI 2 x USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) 2 x USB 3.1 Gen 1 Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (microSD) | Yes (microSD, microSDHC, microSDXC) |
| SOFTWARE | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Operating System (OS) | Google Chrome OS | Google Chrome OS |
|---|---|---|
| Software Included | - | Google Play, Google One (100 GB Cloud Storage) (free for 1 year) |
| MISCELLANEOUS | Lenovo Chromebook S345-14AST (Lenovo Chromebook S345) | HP Pro c640 Chromebook |
|---|
| Included Accessories | USB-C power adapter | USB-C power adapter |
|---|---|---|
| Security | Google Security Chip H1 | Google Security Chip H1, fingerprint reader |
| 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) |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3 | UL, BSMI, SABS, CCC, FCC, ICES, KC, EAC, RCM, ICCP |
| SAR Value | 0.38 W/kg (body), 0.38 W/kg (limb) | - |
| ENERGY STAR Certified | Yes | Yes |
| EPEAT Compliant | EPEAT Bronze | - |
| TCO Certified | - | TCO Certified Notebooks 8 |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 0 °C |
| Humidity Range Operating | - | 10 - 90% |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | Limited warranty - parts and labour - 3 years |
| Model Number | 14AST 81WX | - |
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