In depth comparison and review of LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) and Lenovo ThinkPad T14 Gen 4 (21HD). 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 ThinkPad T14 Gen 4 (21HD) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard comfort
impressive security features
good battery life
efficient performance
heavier than competitors
average display brightness
limited color options
higher price point
| DESIGN AND DIMENSIONS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 35.8 cm x 22.8 cm x 1.68 cm | 31.77 cm x 22.69 cm x 1.79 cm |
| Weight | 1.099 kg | 1.36 kg |
| Case Material | - | Carbon fibre hybrid (top), polyphenylene sulfide (bottom) |
| Colour | White | Thunder black |
| DISPLAY | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Screen Size (Type) | 15.6" - IPS | 14" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1200 (WUXGA) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | - | 300 cd/m² |
| Colour Gamut | 96% sRGB | 45% NTSC |
| Features | - | Anti-glare |
| PROCESSOR | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| CPU | Intel Core i7 (8th Gen) 8565U / 1.8 GHz | Intel Core i5 (13th Gen) 1335U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | 4.6 GHz | 4.6 GHz |
| Number of Cores | Quad-Core | 10-core |
| Cache | L3 - 8 MB | 12 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 ThinkPad T14 Gen 4 (21HD) |
|---|
| RAM | 16 GB | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 16 GB | 32 GB |
| RAM Type | DDR4 SDRAM | DDR5 SDRAM |
| Speed | 2400 MHz | 5200 MHz |
| Rated Speed | - | 5200 MHz |
| Form Factor | - | SO-DIMM 262-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD | 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| 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 - HD | Yes - 1080p |
| Camera Features | - | Privacy shutter, Windows Hello, fixed focus, hybrid FHD/IR camera |
| Sound | Stereo speakers, two microphones | Stereo speakers, dual array microphone |
| Codec | - | Realtek ALC3287 |
| Compliant Standards | DTS Headphone:X | High Definition Audio, Dolby Audio |
| Audio Features | - | Input: Dolby Voice, 360° far-field |
| COMMUNICATIONS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Wireless-AC 9560 | Intel Wi-Fi 6E AX 211 |
| Network Interface | 10/100 Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Intel I219-V |
| Features | Miracast, dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
| WWAN |
|---|
| Generation | - | 4G upgradable |
|---|
| BATTERY | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Technology | 4-cell Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 72 Wh | 52.5 Wh |
| Battery Life | Up to 21.5 hours | - |
| AC ADAPTER | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 48 Watt | 65 Watt |
| INPUT | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | Yes | Yes |
| Features | Scrolling, gesture function, precision touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Slots | 2 x SSD (1 free) | - |
|---|---|---|
| Interfaces | HDMI USB-C 3.1 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) 3 x USB 3.1 Headphone output |
USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI (4K support) LAN Headphone/microphone combo jack |
| Memory Card Reader | Yes (microSD) | - |
| SOFTWARE | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 11 Pro - English |
|---|---|---|
| Software Included | Microsoft Office (30 days trial), LG Easy Guide, LG Control Center, LG Update Center, LG On Screen Display 3, LG Reader Mode | Glance by Mirametrix |
| MISCELLANEOUS | LG gram Ultra-Lightweight LG gram Ultra (Lightweight 15Z990) | Lenovo ThinkPad T14 Gen 4 (21HD) |
|---|
| Included Accessories | Power adapter | USB-C power adapter |
|---|---|---|
| Security | Fingerprint reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader |
| Security Slot Type | Kensington security slot | Kensington nano 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, system password, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, Firmware Resiliency 3.0, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication |
| Compliant Standards | MIL-STD 810G | RoHS, Energy-Related Products (ErP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0 |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 5 °C |
| Humidity Range Operating | - | 8 - 95% |
| Manufacturer Warranty | Limited warranty - 2 years Limited warranty - battery - 1 year |
Base warranty - 3 years - pick-up and return Base warranty - battery - 1 year Extended warranty - 1 year - on-site - response time: next business day |
| Model Number | V.AA78A1 | - |
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