Detailed comparison and review of Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) and Lenovo ThinkPad X1 Extreme Gen 4 (20Y5). 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 IdeaPad S145-15AST (Lenovo IdeaPad S145) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
lightweight design
adequate connectivity options
solid build quality
simple user interface
mediocre battery life
average display quality
limited graphics performance
slower HDD storage
Advantages and disadvantages of Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful intel processor
robust build quality
high-resolution display
excellent keyboard feel
advanced security features
heavier than competitors
expensive price point
average battery life
limited color accuracy
DESIGN AND DIMENSIONS | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 36.22 cm x 25.15 cm x 1.99 cm | 35.95 cm x 25.38 cm x 1.77 cm |
Weight | 1.85 kg | 1.81 kg |
Case Material | Polycarbonate ABS | Aluminium alloy, carbon fibre hybrid |
Colour | Granite black IMR | Black weave |
DISPLAY | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Screen Size (Type) | 15.6" - TN | 16" - IPS |
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LCD Backlight Technology | LED backlight | LED backlight |
Screen Resolution | 1366 x 768 (HD) | 3840 x 2400 (WQUXGA) |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:10 |
Image Brightness | 220 cd/m² | 600 cd/m² |
Colour Gamut | - | 100% Adobe RGB |
Features | Anti-glare | Anti-glare, Factory Calibration, HDR 400 compatible, Low Blue Light technology, 170° viewing angle, Dolby Vision |
PROCESSOR | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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CPU | AMD A9 9425 / 3.1 GHz | Intel Core i7 (11th Gen) 11800H / 2.3 GHz |
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Max Turbo Speed | 3.7 GHz | 4.6 GHz |
Number of Cores | Dual-Core | 8-core |
Cache | 1 MB | 24 MB |
64-bit Computing | Yes | - |
Chipset | - | Intel WM590 |
Features | Integrated memory controller | Integrated memory controller |
MEMORY | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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RAM | 4 GB (1 x 4 GB) | 16 GB (1 x 16 GB) |
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Max RAM Supported | 8 GB | 64 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM - non-ECC |
Speed | 2133 MHz | 3200 MHz |
Rated Speed | 2133 MHz | 3200 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 2 |
Empty Slots | 0 | 1 |
STORAGE | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Main Storage Size (HDD/SSD) | 128 GB SSD 2.5" (7 mm) SATA 6Gb/s | 512 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
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AUDIO & VIDEO | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
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Graphics Processor (GPU) | AMD Radeon R5 | NVIDIA GeForce RTX 3050 Ti / Intel UHD Graphics |
Max Monitors Supported | - | 3 external monitor(s) |
Video Memory | - | 4 GB GDDR6 SDRAM |
Camera | Yes | Yes - 1080p |
Resolution | 0.3 Megapixel | - |
Camera Features | - | Privacy shutter, IR camera, Windows Hello, fixed focus |
Sound | Stereo speakers, microphone | Stereo speakers, dual array microphone |
Codec | - | Realtek ALC3306 |
Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Atmos |
COMMUNICATIONS | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
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Wireless Controller | M.2 Card | Intel Wi-Fi 6E AX 210 |
Features | Single stream (1x1) | Gigabit Ethernet via optional Ethernet (RJ-45) adapter, dual stream (2x2) |
WWAN |
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Generation | - | 5G |
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Controller | - | Qualcomm Snapdragon X55 - M.2 Card |
BATTERY | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Technology | Lithium Ion | Lithium polymer |
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Battery Capacity (Size) | 30 Wh | 90 Wh |
Battery Life | Up to 4 hours | Up to 12.8 hours |
AC ADAPTER | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 45 Watt | 170 Watt |
INPUT | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
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Numeric Keypad | Yes | - |
Keyboard Backlight | - | Yes |
Features | Multi-touch touchpad, buttonless touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls, glass touchpad |
CONNECTIONS & EXPANSIONS | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Slots | - | 2 x M.2 Card (1 free) 1 x Nano-SIM card (1 free) |
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Interfaces | USB 2.0 2 x USB 3.1 Gen 1 HDMI Headphone/microphone combo jack |
USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI Headphone/microphone combo jack |
Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | Yes (SD Card) |
SOFTWARE | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Operating System (OS) | Windows 10 Home in S mode - English | Windows 10 Pro 64-bit Edition - English |
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Software Included | Microsoft Office (Trial) | - |
MISCELLANEOUS | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) | Lenovo ThinkPad X1 Extreme Gen 4 (20Y5) |
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Included Accessories | Power adapter | Power adapter |
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Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip | Discrete 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 | Administrator password, power-on password, RapidCharge, self-healing BIOS, NVMe password |
Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3 | RoHS |
ENERGY STAR Certified | Yes | Yes |
EPEAT Compliant | - | EPEAT Gold |
TCO Certified | - | TCO Certified Notebooks 8 |
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 | Base warranty - 3 years - pick-up and return Base warranty - battery - 1 year Extended warranty - 3 years - on-site |
Model Number | 15AST 81N3 | - |