Lenovo IdeaPad S540-15IML (81NG) vs. Lenovo ThinkBook 16 G6 IRL (21KH)

Laptop Comparison, Reviews and Tests

Side by side comparison and review of Lenovo IdeaPad S540-15IML (81NG) and Lenovo ThinkBook 16 G6 IRL (21KH). 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.

Lenovo IdeaPad S540-15IML (81NG) Review

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

Lenovo ThinkBook 16 G6 IRL (21KH) Review

Advantages and disadvantages of Lenovo ThinkBook 16 G6 IRL (21KH) based on its technical characteristics, features, user experience, expert reviews and price level.

powerful intel processor

high-resolution display

solid build quality

good battery life

fast ssd storage

heavier than competitors

limited color options

noisy under load

expensive base model

Laptop Comparison and Tests

Difference between Lenovo IdeaPad S540-15IML (81NG) and Lenovo ThinkBook 16 G6 IRL (21KH)
82 % - Design
72 % - Display
75 % - Performance
75 % - Connectivity
75 % - Battery
85 % - Design
86 % - Display
85 % - Performance
85 % - Connectivity
85 % - Battery

Laptop Specifications Comparison

Lenovo IdeaPad S540-15IML (81NG) vs. Lenovo ThinkBook 16 G6 IRL (21KH) Comparison Chart
DESIGN AND DIMENSIONS Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Product Type Notebook Notebook
Dimensions (WxDxH) 35.8 cm x 24.5 cm x 1.69 cm 35.6 cm x 25.35 cm x 1.75 cm
Weight 1.95 kg 1.7 kg
Case Material Aluminum, glass Aluminium (top), polycarbonate ABS (bottom)
Colour Mineral grey Dual tone arctic grey
DISPLAY Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Screen Size (Type) 15.6" - IPS 16" - IPS
LCD Backlight Technology LED backlight -
Screen Resolution 1920 x 1080 (Full HD) 1920 x 1200 (WUXGA)
V-Sync Rate at Max Res. - 60 Hz
Widescreen Yes Yes
Image Aspect Ratio 16:9 16:10
Image Brightness 300 cd/m² 300 cd/m²
Colour Gamut 72% 45% NTSC
Features Glossy, glass cover Anti-glare, Low Blue Light technology
PROCESSOR Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
CPU Intel Core i5 (10th Gen) 10210U / 1.6 GHz Intel Core i5 (13th Gen) 1335U / 1.3 GHz
Max Turbo Speed 4.2 GHz 4.6 GHz
Number of Cores Quad-Core 10-core
Cache 6 MB 12 MB
64-bit Computing Yes -
Features Integrated memory controller Integrated memory controller
MEMORY Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
RAM 8 GB (1 x 4 GB + 4 GB (soldered)) 8 GB (1 x 8 GB)
Max RAM Supported 12 GB 64 GB
RAM Type DDR4 SDRAM DDR5 SDRAM
Speed 2400 MHz 5200 MHz
Rated Speed 2400 MHz 5200 MHz
Form Factor SO-DIMM 260-pin SO-DIMM 262-pin
Slots Qty 1 2
Empty Slots 0 1
STORAGE Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Main Storage Size (HDD/SSD) 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe)
AUDIO & VIDEO Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Graphics Processor (GPU) Intel UHD Graphics Intel Iris Xe Graphics
Max Monitors Supported - 3 external monitor(s)
Video System Features - Functions as Intel UHD graphics (for single-channel memory)
Camera Yes - 720p Yes - 1080p
Resolution 1 Megapixel -
Camera Features Privacy shutter Privacy shutter, Windows Hello, fixed focus, hybrid FHD/IR camera
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: noise-cancellation technology
COMMUNICATIONS Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Wireless 802.11a/b/g/n/ac, Bluetooth 4.2 802.11a/b/g/n/ac/ax, Bluetooth 5.1
Wireless Controller M.2 Card M.2 Card
Network Interface - Gigabit Ethernet
Ethernet Controller - Intel I219-V
Features Dual stream (2x2) Wake-on-LAN (WOL), dual stream (2x2)
BATTERY Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Technology Lithium Ion Lithium polymer
Battery Capacity (Size) 70 Wh 45 Wh
Battery Life Up to 15 hours -
AC ADAPTER Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Input AC 120/230 V (50/60 Hz) AC 100-240 V (50/60 Hz)
Output 65 Watt 65 Watt
INPUT Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Type Keyboard, touchpad Keyboard, touchpad
Numeric Keypad Yes Yes
Keyboard Backlight Yes Yes
Features Multi-touch touchpad, buttonless touchpad Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad
CONNECTIONS & EXPANSIONS Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Slots - 2 x M.2 (PCI Express 4.0 x4) (1 free)
Interfaces USB 3.1 Gen 1
USB 3.1 Gen 1 (Always On)
USB-C 3.1 Gen 1
HDMI
Headphone/microphone combo jack
USB 3.2 Gen 1
USB 3.2 Gen 1 (Always On)
USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
HDMI (4K support)
LAN
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 IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Operating System (OS) Windows 10 Home 64-bit Edition - English Windows 11 Pro - English
Software Included Microsoft Office (30 days trial) Microsoft Office (Trial)
MISCELLANEOUS Lenovo IdeaPad S540-15IML (81NG) Lenovo ThinkBook 16 G6 IRL (21KH)
Included Accessories Power adapter USB-C 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, RapidCharge Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro, self-healing BIOS
Compliant Standards RoHS, Energy-Related Products (ErP) Lot 3 RoHS, Energy-Related Products (ErP) Lot 6, FSC, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0
SAR Value 1.81 W/kg (body), 1.81 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 Limited warranty - 1 year - pick-up and return
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