LG gram Book 16 (16U55U) vs LG gram Pro 16 (16Z90U)
The LG gram Pro 16 is the better laptop on paper: it is faster, is lighter and has more memory. The LG gram Book 16 doesn't beat it on any spec that matters.
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Key differences
- Speed LG gram Pro 16 wins
The LG gram Pro 16 is quicker. Its Intel Core Ultra X7 358H is built for heavy creative work, while the AMD Ryzen AI 7 445 in the LG gram Book 16 has the power for photo and video editing.
- Weight LG gram Pro 16 wins
The LG gram Pro 16 is 0.6 kg lighter: 1.199 kg against 1.8 kg.
- Memory LG gram Pro 16 wins
The LG gram Pro 16 has 32 GB of memory against 16 GB, so it has more room for big projects and heavy multitasking.
- Storage LG gram Pro 16 wins
The LG gram Pro 16 has twice the storage: 1 TB against 512 GB.
- OLED screen LG gram Pro 16 wins
The LG gram Pro 16 has an OLED screen, with true blacks and richer colour than the LG gram Book 16's LCD.
Which one should you choose?
Choose the LG gram Book 16 if…
- You like to tap, scroll and sign things on screen: it has a touchscreen.
- You need a long battery life: its maker claims up to 26 hours.
- You want a big screen: it's 16 inches.
Choose the LG gram Pro 16 if…
- You edit photos or video, or keep a lot open at once: its Intel Core Ultra X7 358H is the more powerful processor.
- You'll carry it every day: at 1.199 kg it's easy to take everywhere.
- You keep lots of tabs and apps open: 32 GB of memory gives it more room.
- You store lots of photos, videos or games: it has 1 TB of storage.
- You watch a lot of films and video, or edit photos: its OLED screen has true blacks and rich colour.
Full spec comparison
Add more laptopsThe LG gram Pro 16 leads on performance, battery and weight, the screen and ports and wireless; elsewhere the two are closely matched. Highlighted values mark the better spec in each row, and you can hide the rows where they match.
Performance
The LG gram Pro 16 is ahead on performance.
It is faster, has more memory and has more storage, and the LG gram Book 16 doesn't beat it on anything here.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Processor | AMD Ryzen AI 7 445 | Intel Core Ultra X7 358H |
| Graphics | AMD Radeon 840M | Intel Arc B390 Graphics |
| AI engine (NPU) | 50 TOPS | 50 TOPS |
| Memory (RAM) | 16 GB | 32 GB |
| Memory type | LPDDR5X-7467 | LPDDR5X |
| Maximum memory | 16 GB | 32 GB |
| Memory upgrades | Soldered (not upgradeable) | Soldered (not upgradeable) |
| Storage | 512 GB | 1 TB |
| Storage type | SSD | SSD |
| Storage interface | PCIe 4.0 NVMe M.2 | NVMe Gen5 SSD |
| Storage slots | 2 | 2 |
Screen
Each laptop has its strengths on the screen.
The LG gram Book 16 has a touchscreen, while the LG gram Pro 16 has an OLED screen, has a sharper screen and has more accurate colour.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Screen size | 16" | 16" |
| Resolution | Full HD+ (1920 x 1200) | 3K (2880 x 1800) |
| Aspect ratio | 16:10 | 16:10 |
| Panel | IPS | OLED |
| Refresh rate | 120 Hz | 120 Hz |
| Variable refresh (VRR) | Yes | Yes |
| Brightness | 400 nits | 500 nits |
| Colour range | sRGB 100% (typical) | DCI-P3 100% (Typical) |
| Finish | Matte | Anti-reflective |
| Touchscreen | Yes | No |
Battery and size
The LG gram Pro 16 is ahead on battery and weight.
It is lighter and is slimmer, and the LG gram Book 16 doesn't beat it on anything here.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Battery life (maker claim) | Up to 26 hours | Up to 27 hours |
| Battery capacity | 77 Wh | 77 Wh |
| Charger | 65 W | — |
| Charges via | USB-C | USB-C |
| Weight | 1.8 kg | 1.199 kg |
| Dimensions | 357.0 x 255.2 x 16.4 mm | 357.7 x 251.6 x 12.4~12.8 |
| Materials | Aluminium lid, palm rest and base; PC/ABS screen bezel (A/C/D parts Al, B part PC/ABS) | Aerominium |
| Durability | — | MIL-STD-810H |
| Colour | Titan Black | Aerominium Black |
| Colours available | Titan Black | Aerominium Black |
Ports and wireless
The LG gram Pro 16 is ahead on ports and wireless.
It has Thunderbolt or USB4 and has Wi-Fi 7, and the LG gram Book 16 doesn't beat it on anything here.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Ports | 2x USB-C 3.2 Gen 2 (USB PD charging, 65W), 2x USB-A 3.2 Gen 1, 1x HDMI (4K@60Hz), 1x 3.5 mm 4-pole headset jack | 2x USB4 Gen 3x2 Type-C (USB-C charging, PD up to 65W, DisplayPort; LG feature text calls them Thunderbolt 4), 2x USB-A 3.2 Gen 1, 1x HDMI (version not stated), 1x 3.5 mm headphone-out (4-pole) |
| Thunderbolt / USB4 | None | USB4 Gen 3x2 (LG feature text: Thunderbolt 4) |
| Card reader | None | None |
| Ethernet | None | None |
| Wi-Fi | Wi-Fi 6E | Wi-Fi 7 |
| Bluetooth | Bluetooth 5.4 | Bluetooth 6.0 |
| Mobile data | None | None |
Features
Both have much the same extras.
From the keyboard to the webcam and login, there is little between them.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Webcam | 1080p + IR | 1080p + IR |
| Webcam privacy | physical shutter | — |
| Backlit keyboard | Yes | Yes |
| Keyboard | Full-size backlit, 98 keys with 3-column numeric keypad | Full-size backlit, 98 keys with 3-column numeric keypad |
| Login | Face | Face |
| Number pad | Yes | Yes |
| Touchpad | Precision touchpad with scroll and gesture function | Precision Touch Pad with scroll and gesture function |
| Speakers | Stereo 1.5 W x 2, Dolby Atmos | 2x 3.0 W stereo, Dolby Atmos |
| Microphones | dual mic | dual mic |
| Pen | No | No |
| Security | SSD security, Kensington lock | SSD security |
Software and model
Both run Windows.
So the same apps work on both, and they get the same kind of updates.
| Spec | LG gram Book 16 (16U55U) | LG gram Pro 16 (16Z90U) |
|---|---|---|
| Operating system | Windows 11 Home | Windows 11 Home |
| Model number | 16U55U-H.AU75AN | 16Z90U-K.AUB8AN |
| Released | 2026 | 2026 |