Detailed comparison and review of Lenovo ThinkBook 14 G4 ABA (21DK) and Lenovo IdeaPad S540-15IML (81NG). With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.
Advantages and disadvantages of Lenovo ThinkBook 14 G4 ABA (21DK) based on its technical characteristics, features, user experience, expert reviews and price level.
robust aluminum design
efficient Ryzen processor
comfortable keyboard layout
affordable price point
solid state drive included
average battery life
no thunderbolt support
dim display brightness
limited graphics performance
Advantages and disadvantages of Lenovo IdeaPad S540-15IML (81NG) based on its technical characteristics, features, user experience, expert reviews and price level.
sleek aluminum design
sharp full HD display
fast processing speeds
ample storage capacity
good battery life
heavier than competitors
no optical drive
limited port selection
average graphics performance
| DESIGN AND DIMENSIONS | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 32.3 cm x 21.8 cm x 1.79 cm | 35.8 cm x 24.5 cm x 1.69 cm |
| Weight | 1.4 kg | 1.95 kg |
| Case Material | Aluminum | Aluminum, glass |
| Colour | Dual tone mineral grey | Mineral grey |
| DISPLAY | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Screen Size (Type) | 14" - IPS | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 300 cd/m² | 300 cd/m² |
| Colour Gamut | 45% NTSC | 72% |
| Features | Anti-glare, 170° viewing angle | Glossy, glass cover |
| PROCESSOR | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| CPU | AMD Ryzen 5 5625U / 2.3 GHz | Intel Core i5 (10th Gen) 10210U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.3 GHz | 4.2 GHz |
| Number of Cores | 6-core | Quad-Core |
| Cache | L3 - 16 MB | 6 MB |
| 64-bit Computing | - | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| RAM | 8 GB (provided memory is soldered) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 40 GB | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 3200 MHz | 2400 MHz |
| Rated Speed | 3200 MHz | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 1 |
| Empty Slots | 1 | 0 |
| STORAGE | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 3.0 x4 - NVM Express (NVMe) | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Graphics Processor (GPU) | AMD Radeon Graphics | Intel UHD Graphics |
|---|---|---|
| Max Monitors Supported | 3 external monitor(s) | - |
| Camera | Yes - 1080p | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | Privacy shutter, fixed focus | Privacy shutter |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3287 | - |
| Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | M.2 Card | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Features | Wake-on-LAN (WOL), dual stream (2x2) | Dual stream (2x2) |
| BATTERY | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Technology | Lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 45 Wh | 70 Wh |
| Battery Life | Up to 8 hours | Up to 15 hours |
| Battery Run Time | Local video (1080p) playback time (150 nits): up to 8 hours | - |
| AC ADAPTER | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Slots | 1 x M.2 (PCI Express 3.0 x4) (0 free) 1 x M.2 (PCI Express 3.0 x4) (1 free) |
- |
|---|---|---|
| Interfaces | 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 HDMI LAN Headphone/microphone combo jack |
USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 3.1 Gen 1 HDMI Headphone/microphone combo jack |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | Microsoft Office (Trial) | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo ThinkBook 14 G4 ABA (21DK) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Included Accessories | USB-C power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington nano security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Features | Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro | Administrator password, hard drive password, power-on password, RapidCharge |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 6, TUV Rheinland Low Blue Light (Software Solution) | RoHS, Energy-Related Products (ErP) Lot 3 |
| SAR Value | - | 1.81 W/kg (body), 1.81 W/kg (limb) |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Gold | - |
| Max Operating Temperature | 35 °C | - |
| Min Operating Temperature | 5 °C | - |
| Humidity Range Operating | 8 - 95% | - |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | Limited warranty - 1 year - pick-up and return |
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