Lenovo IdeaPad S145-15IWL (81MV) vs. Dell Latitude 7640

Laptop Comparison, Reviews and Tests

Detailed comparison and review of Lenovo IdeaPad S145-15IWL (81MV) and Dell Latitude 7640. 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.

Lenovo IdeaPad S145-15IWL (81MV) Review

Advantages and disadvantages of Lenovo IdeaPad S145-15IWL (81MV) based on its technical characteristics, features, user experience, expert reviews and price level.

affordable price

lightweight design

decent processor performance

solid build quality

adequate connectivity options

average battery life

dim display

no backlit keyboard

limited graphics capabilities

Dell Latitude 7640 Review

Advantages and disadvantages of Dell Latitude 7640 based on its technical characteristics, features, user experience, expert reviews and price level.

robust security features

high-resolution display

powerful processor performance

lightweight design

excellent connectivity options

higher price point

average battery life

limited color options

noisy under load

Laptop Comparison and Tests

Difference between Lenovo IdeaPad S145-15IWL (81MV) and Dell Latitude 7640
72 % - Design
64 % - Display
65 % - Performance
65 % - Connectivity
65 % - Battery
82 % - Design
85 % - Display
84 % - Performance
85 % - Connectivity
85 % - Battery

Laptop Specifications Comparison

Lenovo IdeaPad S145-15IWL (81MV) vs. Dell Latitude 7640 Comparison Chart
DESIGN AND DIMENSIONS Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Product Type Notebook Notebook
Dimensions (WxDxH) 36.22 cm x 25.15 cm x 1.99 cm 35.8 cm x 25.042 cm x 1.95 cm
Weight 1.85 kg 1.837 kg
Case Material Polycarbonate ABS Aluminum
Colour Platinum grey IMR -
DISPLAY Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Screen Size (Type) 15.6" - TN 16" - IPS
LCD Backlight Technology LED backlight -
Screen Resolution 1366 x 768 (HD) 1920 x 1200 (Full HD Plus)
Pixel Density (ppi) - 141.5
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 Anti-glare, 35 ms response rate, 85° horizontal and vertical viewing angle, 0.17952 mm pixel pitch
PROCESSOR Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
CPU Intel Core i3 (8th Gen) 8145U / 2.1 GHz Intel Core i5 (13th Gen) 1345U / 1.6 GHz
Max Turbo Speed 3.9 GHz 4.7 GHz
Number of Cores Dual-Core 10-core
Cache 4 MB L3 - 12 MB
64-bit Computing Yes -
Platform Technology - Intel vPro Enterprise
Features Integrated memory controller Intel Smart Cache
MEMORY Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
RAM 4 GB (provided memory is soldered) 16 GB (provided memory is soldered)
Max RAM Supported 12 GB -
RAM Type DDR4 SDRAM LPDDR5 SDRAM
Speed 2400 MHz 4800 MHz
Rated Speed 2400 MHz 4800 MHz
Form Factor SO-DIMM 260-pin -
Slots Qty 1 -
Empty Slots 1 -
STORAGE Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Main Storage Size (HDD/SSD) 128 GB SSD M.2 2280 SATA 6Gb/s 512 GB SSD M.2 2230 PCIe 4.0 x4 - NVM Express (NVMe), Class 35
AUDIO & VIDEO Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Graphics Processor (GPU) Intel UHD Graphics Intel Iris Xe Graphics
Video System Features - Functions as Intel UHD graphics (for single-channel memory)
Camera Yes Yes - 1920 x 1080 (standard), 640 x 360 (infrared)
Resolution 0.3 Megapixel -
Camera Features - Privacy shutter, IR/RGB camera, Temporal Noise Reduction, 80 degrees, 86.6 degrees (IR camera)
Image Sensor Type - CMOS
Video Resolutions - 1920 x 1080, 640 x 360
Frame Rate - 30 frames per second
Sound Stereo speakers, microphone Four stereo speakers, dual array microphone
Codec - Realtek ALC3281
Compliant Standards High Definition Audio, Dolby Audio High Definition Audio
COMMUNICATIONS Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Wireless 802.11a/b/g/n/ac, Bluetooth 4.2 Bluetooth, NFC, 802.11a/b/g/n/ac/ax (Wi-Fi 6E)
Wireless Controller M.2 Card Intel Wi-Fi 6E AX 211
Features Single stream (1x1) Dual stream (2x2), WWAN aerial
BATTERY Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Technology Lithium Ion 3-cell Lithium Ion
Battery Capacity (Size) 30 Wh 57 Wh
Battery Life Up to 5.5 hours -
AC ADAPTER Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Input AC 120/230 V (50/60 Hz) AC 100-240 V (50/60 Hz)
Output 45 Watt 65 Watt, 5 / 9 / 15 / 20 V
INPUT Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Type Keyboard, touchpad Keyboard, ClickPad
Numeric Keypad Yes -
Keyboard Backlight - Yes
Features Multi-touch touchpad, buttonless touchpad Mini LED backlit, 80-key
CONNECTIONS & EXPANSIONS Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Interfaces USB 2.0
2 x USB 3.1 Gen 1
HDMI
Headphone/microphone combo jack
HDMI
2 x USB4 (supports Thunderbolt 4, DisplayPort Alt Mode) (Power Delivery)
USB 3.2 Gen 1 (PowerShare)
USB 3.2 Gen 1
Headphone/microphone combo jack
Memory Card Reader 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) -
SOFTWARE Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Operating System (OS) Windows 10 Home in S mode - English Windows 11 Pro - Dutch / English / French / German / Italian
Software Included Microsoft Office (30 days trial) Microsoft Office (30 days trial, excludes office licence)
MISCELLANEOUS Lenovo IdeaPad S145-15IWL (81MV) Dell Latitude 7640
Included Accessories Power adapter USB-C power adapter
Integrated Options - Accelerometer, hall sensor
Security Firmware Trusted Platform Module (TPM 2.0) Security Chip Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader, contactless smart card reader
Security Slot Type - Noble Wedge security slot
Theft/Intrusion Protection - Security lock slot (cable lock sold separately)
Features Administrator password, hard drive password, power-on password ExpressCharge, ExpressChargeBoost
Compliant Standards RoHS, Energy-Related Products (ErP) Lot 3 FIPS 140-2, TCG Certified, TCO Certified 9.0
Max Operating Temperature - 35 °C
Min Operating Temperature - 0 °C
Humidity Range Operating - 10 - 90% (non-condensing)
Manufacturer Warranty Limited warranty - 1 year - pick-up and return -
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