In depth comparison and review of Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) and Lenovo IdeaPad 520-15IKB (81BF). 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 X1 Extreme (2nd Gen) (20QV) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
excellent keyboard comfort
high-resolution display
advanced security features
heavier than competitors
short battery life
high price point
noisy under load
Advantages and disadvantages of Lenovo IdeaPad 520-15IKB (81BF) based on its technical characteristics, features, user experience, expert reviews and price level.
robust metal design
crisp full HD display
backlit keyboard feature
adequate processing power
reasonable price point
average battery life
limited graphics performance
heavier than competitors
no USB-C port
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 36.18 cm x 24.57 cm | 37.8 cm x 26 cm x 2.2 cm |
| Weight | 1.7 kg | 2.2 kg |
| Case Material | Aluminum, glass-fibre reinforced plastic, carbon fibre reinforced plastic | Metal |
| Colour | - | Golden |
| DISPLAY | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Screen Size (Type) | 15.6" | 15.6" - IPS |
|---|---|---|
| Screen Resolution | - | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | - | 250 cd/m² |
| Features | - | Anti-glare |
| PROCESSOR | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| CPU | No CPU | Intel Core i5 (8th Gen) 8550U / 1.8 GHz |
|---|---|---|
| Max Turbo Speed | - | 4 GHz |
| Number of Cores | - | Quad-Core |
| Cache | - | 8 MB |
| Chipset | Mobile Intel CM246 | - |
| Features | - | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| RAM | 0 GB | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 64 GB | 16 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2666 MHz | 2133 MHz |
| Rated Speed | - | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 1 |
| Empty Slots | 2 | 0 |
| STORAGE | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Main Storage Size (HDD/SSD) | - | 2 TB HDD SATA 6Gb/s / 5400 rpm |
|---|---|---|
| Optical Drive | - | DVD±RW |
| AUDIO & VIDEO | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | - | NVIDIA GeForce MX150 / Intel UHD Graphics 620 |
| Video Memory | - | 4 GB GDDR5 SDRAM |
| Camera | Yes | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | - | Fixed focus |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Conexant CX11880 | - |
| Compliant Standards | High Definition Audio, Dolby Audio Premium, Dolby Atmos | High Definition Audio, Dolby Audio |
| Audio Features | - | Output: Harman audio technology |
| COMMUNICATIONS | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Wireless | Bluetooth 5.0, 802.11a/b/g/n/ac/ax | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6 AX 200 | M.2 Card |
| Network Interface | - | Gigabit Ethernet |
| Features | - | Single stream (1x1) |
| BATTERY | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Technology | Lithium Ion | 2-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 80 Wh | 35 Wh |
| Battery Life | Up to 14 hours | Up to 6 hours |
| AC ADAPTER | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 135 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | - |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Interfaces | USB 3.1 Gen 1 (Always On) USB 3.1 Gen 1 2 x USB-C 3.1 Gen 2 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) HDMI Lenovo Ethernet extension connector Headphone/microphone combo jack |
USB-C 3.0 2 x USB 3.0 HDMI LAN Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (SD Card, SDHC Card, SDXC Card, SDXC UHS-II Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Operating System (OS) | No operating system | Windows 10 Home 64-bit Edition - English |
|---|
| MISCELLANEOUS | Lenovo ThinkPad X1 Extreme (2nd Gen) (20QV) | Lenovo IdeaPad 520-15IKB (81BF) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Fingerprint reader |
| Security Slot Type | Kensington security slot | Kensington mini security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | Administrator password, hard drive password, power-on password, RapidCharge, MIL-STD-810G tested | Administrator password, hard drive password, power-on password |
| Compliant Standards | RoHS | RoHS |
| SAR Value | 0.546 W/kg (body), 0.546 W/kg (limb) | - |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Silver | - |
| Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |
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