In depth comparison and review of Lenovo ThinkPad T15p Gen 3 (21DA) and Lenovo IdeaPad S540-15IML (81NG). 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 ThinkPad T15p Gen 3 (21DA) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
comfortable keyboard design
ample connectivity options
efficient thermal management
heavier than competitors
average battery life
limited display brightness
premium price point
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 ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 36.65 cm x 25 cm x 2.27 cm | 35.8 cm x 24.5 cm x 1.69 cm |
| Weight | 2.226 kg | 1.95 kg |
| Case Material | Polycarbonate ABS (bottom), polycarbonate ABS (top) | Aluminum, glass |
| Colour | Black | Mineral grey |
| DISPLAY | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Screen Size (Type) | 15.6" - 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, DC dimming | Glossy, glass cover |
| PROCESSOR | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| CPU | Intel Core i7 (12th Gen) 12700H / 2.3 GHz | Intel Core i5 (10th Gen) 10210U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 4.2 GHz |
| Number of Cores | 14-core | Quad-Core |
| Cache | 24 MB | 6 MB |
| 64-bit Computing | - | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| RAM | 16 GB (1 x 16 GB) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 64 GB | 12 GB |
| RAM Type | DDR5 SDRAM - non-ECC | DDR4 SDRAM |
| Speed | 4800 MHz | 2400 MHz |
| Rated Speed | 4800 MHz | 2400 MHz |
| Form Factor | SO-DIMM 262-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 1 |
| Empty Slots | 1 | 0 |
| STORAGE | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe), Value | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|---|---|
| RAID Level | RAID 0, RAID 1 | - |
| AUDIO & VIDEO | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA GeForce RTX 3050 / Intel Iris Xe Graphics | Intel UHD Graphics |
| Max Monitors Supported | 2 external monitor(s) | - |
| Video Memory | 4 GB GDDR6 SDRAM | - |
| Camera | Yes - 720p | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | Privacy shutter, IR camera, Windows Hello, 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 Premium, Dolby Voice | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Wireless | Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6E AX 211 | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Intel I219-V | - |
| Features | Wake-on-LAN (WOL), dual stream (2x2) | Dual stream (2x2) |
| WWAN |
|---|
| Generation | 4G upgradable | - |
|---|
| BATTERY | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Technology | Lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 68 Wh | 70 Wh |
| Battery Life | - | Up to 15 hours |
| AC ADAPTER | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 135 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Slots | 2 x M.2 (PCI Express 4.0 x4) (1 free) | - |
|---|---|---|
| Interfaces | USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI Headphone/microphone combo jack LAN |
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 | Yes (SD Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo ThinkPad T15p Gen 3 (21DA) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Features | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password | Administrator password, hard drive password, power-on password, RapidCharge |
| Compliant Standards | RoHS, TCG Certified | 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 | Base warranty - 3 years - pick-up and return Base warranty - battery - 1 year Extended warranty - 3 years - on-site |
Limited warranty - 1 year - pick-up and return |
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