LG Gram SuperSlim vs Samsung Galaxy Book4 Ultra
The Verdict
LG Gram SuperSlim excels as an ultraportable workhorse at 2.18 lbs with its featherlight magnesium chassis and exceptional 12-hour battery endurance. Its 15.6-inch OLED display delivers vibrant colors despite 1080p resolution, powered by Intel Core Ultra 7 155H with 16GB LPDDR5X RAM. Samsung Galaxy Book4 Ultra commands premium positioning with a larger 16-inch Dynamic AMOLED 2X touchscreen at 2880x1800 resolution and 120Hz refresh rate, backed by the more powerful Core Ultra 9 185H. Connectivity differs meaningfully—LG offers dual Thunderbolt but lacks USB-A, while Samsung includes both USB-A and SD card slot for professionals. Samsung's 1TB storage doubles LG's 512GB and remains expandable. At $700 more, Galaxy Book4 Ultra justifies costs through superior processing power, resolution clarity, and versatility, making it ideal for demanding creators. LG Gram SuperSlim remains the stronger choice for mobile professionals prioritizing portability and battery life over raw performance.
Who Should Buy
Buy the LG Gram SuperSlim if…
- →Under 1 kg — the lightest 15.6-inch laptop you can buy
- →15.6-inch OLED display in an impossibly thin 0.43-inch chassis
- →Thunderbolt 4 and HDMI in such a thin form factor is impressive
Buy the Samsung Galaxy Book4 Ultra if…
- →Stunning 3K AMOLED 120Hz display with deep colors
- →Includes NVIDIA RTX 4050 or 4070 discrete GPU
- →Surprisingly thin and light for a 16-inch with dGPU
Category Scores
Pros & Cons
LG Gram SuperSlim
Pros
- Under 1 kg — the lightest 15.6-inch laptop you can buy
- 15.6-inch OLED display in an impossibly thin 0.43-inch chassis
- Thunderbolt 4 and HDMI in such a thin form factor is impressive
- 12-hour battery life despite the razor-thin build
- MIL-STD-810H durability tested despite the low weight
Cons
- FHD resolution on 15.6 inches — should be 2.5K at this price
- Very expensive at $1,699 for the specs
- No USB-A ports — dongles needed for legacy peripherals
- 60Hz display — no high refresh option
Samsung Galaxy Book4 Ultra
Pros
- Stunning 3K AMOLED 120Hz display with deep colors
- Includes NVIDIA RTX 4050 or 4070 discrete GPU
- Surprisingly thin and light for a 16-inch with dGPU
- Tight integration with Samsung Galaxy ecosystem
Cons
- Premium pricing rivals workstation laptops
- Soldered RAM, only storage is upgradable
- Speakers underwhelming versus MacBook competitors
- Touchpad palm rejection occasionally inconsistent
Full Specifications
| Spec | LG Gram SuperSlim | Samsung Galaxy Book4 Ultra |
|---|---|---|
| Software | Windows 11 Home | Windows 11 Home |
| Body | ||
| Weight | 2.18 lbs (0.99 kg) | 1.86 kg |
| Material | Magnesium alloy | Aluminum |
| Dimensions | 14.09 x 9.61 x 0.43 inches | 355.4 x 250.4 x 16.5 mm |
| Ports | ||
| HDMI | 1 | |
| USB-C ports | 2 | 2 |
| Thunderbolt ports | 2 | 2 |
| USB-A ports | — | 1 |
| SD card | — | |
| Battery | ||
| Battery life | Up to 12 hours | Up to 13 hours |
| Capacity | 60 Wh | 76 Wh |
| Display | ||
| Size | 15.6 inches | 16 inches |
| Type | OLED | Dynamic AMOLED 2X touchscreen |
| Resolution | 1920 x 1080 | 2880 x 1800 |
| Refresh rate | 60Hz | 120Hz |
| Brightness (nits) | 400 | 400 |
| Storage | ||
| SSD | 512 GB PCIe Gen 4 NVMe | 1 TB |
| Expandable storage | ||
| Keyboard | ||
| Backlit | ||
| Processor | ||
| RAM | 16 GB LPDDR5X | 16 GB LPDDR5X |
| Cores | 16 cores (6P + 8E + 2LPE) | 16 cores |
| Chipset | Intel Core Ultra 7 155H | Intel Core Ultra 9 185H |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
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