In depth comparison and review of LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) 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 LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) based on its technical characteristics, features, user experience, expert reviews and price level.
exceptionally lightweight design
impressive battery life
crisp full HD display
solid state drive storage
robust build quality
average graphics performance
limited port selection
higher price point
no dedicated GPU
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 | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 35.8 cm x 22.8 cm x 1.68 cm | 37.8 cm x 26 cm x 2.2 cm |
Weight | 1.099 kg | 2.2 kg |
Case Material | - | Metal |
Colour | White | Golden |
DISPLAY | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Screen Size (Type) | 15.6" - IPS | 15.6" - IPS |
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LCD Backlight Technology | 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 | - | 250 cd/m² |
Colour Gamut | 96% sRGB | - |
Features | - | Anti-glare |
PROCESSOR | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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CPU | Intel Core i7 (8th Gen) 8565U / 1.8 GHz | Intel Core i5 (8th Gen) 8550U / 1.8 GHz |
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Max Turbo Speed | 4.6 GHz | 4 GHz |
Number of Cores | Quad-Core | Quad-Core |
Cache | L3 - 8 MB | 8 MB |
64-bit Computing | Yes | - |
Features | Intel Turbo Boost Technology 2.0 | Integrated memory controller |
MEMORY | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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RAM | 16 GB | 8 GB (1 x 4 GB + 4 GB (soldered)) |
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Max RAM Supported | 16 GB | 16 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 2400 MHz | 2133 MHz |
Rated Speed | - | 2400 MHz |
Form Factor | - | SO-DIMM 260-pin |
Slots Qty | - | 1 |
Empty Slots | - | 0 |
STORAGE | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Main Storage Size (HDD/SSD) | 512 GB SSD | 2 TB HDD SATA 6Gb/s / 5400 rpm |
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Optical Drive | - | DVD±RW |
AUDIO & VIDEO | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
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Graphics Processor (GPU) | Intel UHD Graphics | NVIDIA GeForce MX150 / Intel UHD Graphics 620 |
Video Memory | - | 4 GB GDDR5 SDRAM |
Camera | Yes - HD | Yes - 720p |
Resolution | - | 1 Megapixel |
Camera Features | - | Fixed focus |
Sound | Stereo speakers, two microphones | Stereo speakers, dual array microphone |
Compliant Standards | DTS Headphone:X | High Definition Audio, Dolby Audio |
Audio Features | - | Output: Harman audio technology |
COMMUNICATIONS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
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Wireless Controller | Intel Wireless-AC 9560 | M.2 Card |
Network Interface | 10/100 Ethernet | Gigabit Ethernet |
Features | Miracast, dual stream (2x2) | Single stream (1x1) |
BATTERY | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Technology | 4-cell Lithium Ion | 2-cell lithium polymer |
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Battery Capacity (Size) | 72 Wh | 35 Wh |
Battery Life | Up to 21.5 hours | Up to 6 hours |
AC ADAPTER | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 48 Watt | 65 Watt |
INPUT | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Type | Keyboard, touchpad | Keyboard, touchpad |
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Numeric Keypad | Yes | Yes |
Keyboard Backlight | Yes | Yes |
Features | Scrolling, gesture function, precision touchpad | - |
CONNECTIONS & EXPANSIONS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Slots | 2 x SSD (1 free) | - |
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Interfaces | HDMI USB-C 3.1 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) 3 x USB 3.1 Headphone output |
USB-C 3.0 2 x USB 3.0 HDMI LAN Headphone/microphone combo jack |
Memory Card Reader | Yes (microSD) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
SOFTWARE | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 10 Home 64-bit Edition - English |
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Software Included | Microsoft Office (30 days trial), LG Easy Guide, LG Control Center, LG Update Center, LG On Screen Display 3, LG Reader Mode | - |
MISCELLANEOUS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo IdeaPad 520-15IKB (81BF) |
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Included Accessories | Power adapter | Power adapter |
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Security | 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 | Dust-resistant, shock-resistant, pressure-resistant, vibration-resistant | Administrator password, hard drive password, power-on password |
Compliant Standards | MIL-STD 810G | RoHS |
Manufacturer Warranty | Limited warranty - 2 years Limited warranty - battery - 1 year |
Limited warranty - 1 year - pick-up and return |
Model Number | V.AA78A1 | - |