In depth comparison and review of Lenovo IdeaPad S540-13IML (81XA) and Lenovo ThinkPad T14s Gen 4 (21F9). 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 Lenovo IdeaPad S540-13IML (81XA) based on its technical characteristics, features, user experience, expert reviews and price level.
sleek aluminum design
sharp QHD display
impressive battery life
fast charging support
lightweight and portable
limited port selection
no dedicated GPU
average speaker quality
higher price segment
Advantages and disadvantages of Lenovo ThinkPad T14s Gen 4 (21F9) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
impressive battery life
powerful processor options
bright display
higher price point
limited graphics performance
no OLED option
heavier than competitors
| DESIGN AND DIMENSIONS | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 29.69 cm x 20.85 cm x 1.595 cm | 31.75 cm x 22.69 cm x 1.69 cm |
| Weight | 1.25 kg | 1.26 kg |
| Case Material | Aluminum, glass | Aluminium (bottom), carbon fibre hybrid (top) |
| Colour | Light silver | Deep black |
| DISPLAY | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Screen Size (Type) | 13.3" | 14" - IPS |
|---|---|---|
| Touchscreen | - | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 2560 x 1600 (WQXGA) | 1920 x 1200 (WUXGA) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:10 |
| Image Brightness | 300 cd/m² | 300 cd/m² |
| Colour Gamut | 100% sRGB | 45% NTSC |
| Features | Glossy, Wide Viewing Angle | Anti-glare, on-cell touch technology |
| PROCESSOR | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| CPU | Intel Core i5 (10th Gen) 10210U / 1.6 GHz | AMD Ryzen 5 Pro 7540U / 3.2 GHz |
|---|---|---|
| Max Turbo Speed | 4.2 GHz | 4.9 GHz |
| Number of Cores | Quad-Core | 6-core |
| Cache | 6 MB | L3 - 16 MB |
| 64-bit Computing | Yes | - |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| RAM | 8 GB (provided memory is soldered) | 16 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | DDR4 SDRAM | LPDDR5X SDRAM |
| Speed | 2666 MHz | 6400 MHz |
| Rated Speed | 2666 MHz | 7500 MHz |
| STORAGE | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) | 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption - Kioxia |
|---|
| AUDIO & VIDEO | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | AMD Radeon 740M |
|---|---|---|
| Max Monitors Supported | - | 3 external monitor(s) |
| Camera | Yes - 720p | Yes |
| Resolution | 1 Megapixel | 5 Megapixel |
| Camera Features | IR camera, ToF sensor | Privacy shutter, Windows Hello, fixed focus, Discrete IR, Ultrasonic Human Presence Detection |
| 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 |
| Audio Features | - | Input: Dolby Voice, 360° far-field |
| COMMUNICATIONS | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Wireless | Bluetooth 5.0, 802.11a/b/g/n/ac/ax | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | M.2 Card | Qualcomm NFA725A |
| Network Interface | - | Gigabit Ethernet |
| Features | Dual stream (2x2) | - |
| BATTERY | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Technology | Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 56 Wh | 57 Wh |
| Battery Life | Up to 18.5 hours | - |
| AC ADAPTER | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| Features | Multi-touch touchpad, buttonless touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Interfaces | USB 3.1 Gen 1 (Always On) 2 x USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) Headphone/microphone combo jack |
USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 (Always On) 2 x USB4 (supports DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) HDMI (4K support) Headphone/microphone combo jack LAN (on supplied adapter) |
|---|
| SOFTWARE | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence |
|---|---|---|
| Software Included | Microsoft Office (30 days trial) | Glance by Mirametrix |
| MISCELLANEOUS | Lenovo IdeaPad S540-13IML (81XA) | Lenovo ThinkPad T14s Gen 4 (21F9) |
|---|
| Included Accessories | Power adapter | USB-C power adapter, Lenovo USB-C to Ethernet Adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip | Discrete Trusted Platform Module (TPM 2.0) Security Chip with Microsoft Pluton, 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, RapidCharge | Administrator password, system password, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3 | RoHS, Energy-Related Products (ErP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0 |
| SAR Value | 0.599 W/kg (body), 0.599 W/kg (limb) | - |
| Specific Absorption Rate (SAR) | 0.599 W/kg (body) 0.599 W/kg (limb) |
- |
| 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 | - |
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