990 g is the number that defines Lenovo’s new ThinkBook 14x: a globally launched 14-inch ultraportable that undercuts the company’s freshly presented 1.06 kg IdeaPad Slim 5 Ultra while still offering an OLED screen rated at 1,100 nits peak HDR brightness.
The laptop has launched globally with Intel Core Ultra processor options, up to 32 GB of LPDDR5X-8533 RAM, and an unusually flexible storage layout for a machine this thin, according to Notebookcheck. Lenovo has not yet disclosed the final global design images, and regional pricing remains partly dependent on early retailer listings rather than a full country-by-country rollout.
Lenovo’s 990 g ThinkBook 14x pushes below the 1 kg line
The ThinkBook 14x measures 312 x 217 x 12.9-15.6 mm, putting it squarely in thin-and-light territory. The weight is the sharper figure. At 990 g, it comes in below the 1.06 kg IdeaPad Slim 5 Ultra that Lenovo has also just presented.
That makes the new model one of Lenovo’s more aggressive portability plays in the 14-inch category based on the supplied launch details. It is not just a thin shell with minimal hardware, either. Lenovo lists five Intel options: Core Ultra 5 226V, Core Ultra 5 228V, Core Ultra 7 266V, Core Ultra 7 256V, and Core Ultra 7 258V.
Memory configurations are listed at 16 GB or 32 GB of LPDDR5X-8533 RAM. Storage is where the ThinkBook 14x becomes more interesting than the weight alone suggests: Lenovo includes both M.2 2242 and M.2 2280 slots, although only the M.2 2242 slot is expected to be populated from the factory.
For Lenovo watchers, this follows the company’s recent 14-inch activity, including MLXIO’s earlier coverage of Lenovo’s 1.06 kg IdeaPad Slim Ultra. The ThinkBook 14x appears to take the same broad portability contest and push the scale slightly lower.
| Model | Screen size | Weight | Thickness | Notable sourced detail |
|---|---|---|---|---|
| ThinkBook 14x | 14-inch | 990 g | 12.9-15.6 mm | Dual M.2 2242/M.2 2280 slots |
| IdeaPad Slim 5 Ultra | 14-inch | 1.06 kg | Not provided in source | Recently presented by Lenovo |
1,100-nit OLED and 120 Hz VRR give the display top billing
The screen is the headline spec after the weight. Lenovo will configure the ThinkBook 14x with up to an 1800p OLED display carrying a 120 Hz VRR refresh rate, 100% DCI-P3 coverage, 500 nits SDR brightness, and 1,100 nits HDR peak brightness.
Those numbers matter because Lenovo is not limiting the premium panel to a heavier performance chassis in the supplied configuration details. The ThinkBook 14x combines the high-brightness OLED option with a sub-1 kg body, which narrows the trade-off between portability and display quality.
Analysis: The 120 Hz VRR panel should make motion and scrolling feel smoother than fixed 60 Hz panels, while the 1,100-nit HDR peak gives Lenovo a clear spec-sheet hook for users who prioritize media, visual work, or bright-screen use. Real-world brightness behavior will still depend on review testing, especially how long the panel sustains high HDR output.
The display also gives Lenovo a clearer premium story than weight alone. A 990 g laptop is easy to market; a 990 g laptop with 1800p OLED, 120 Hz VRR, and a second SSD slot is harder to dismiss as just another travel notebook.
Dual M.2 slots make the thin chassis less disposable
The most unusual design choice may be the storage layout. Despite the 12.9-15.6 mm thickness range, the ThinkBook 14x includes both an M.2 2242 slot and an M.2 2280 slot.
Only the smaller M.2 2242 slot will be populated from the factory, according to the source material. That leaves the larger M.2 2280 slot available for expansion, assuming retail units match the listed configuration and regional SKUs do not alter the layout.
For buyers, that matters more than a spec table usually suggests. Thin laptops often force storage decisions at checkout. Here, Lenovo appears to leave room for a later upgrade without moving to a larger machine.
The port list is also practical for the size:
- Audio: 1x 3.5 mm combo jack
- Display: 1x HDMI 2.1, supporting 4K/60 Hz
- USB-A: 2x USB Type-A, rated at 5 Gbps
- USB-C: 2x USB Type-C, rated at 10 Gbps
Battery configurations are listed at 54.7 Wh or 65 Wh, with 65 W charging. Lenovo has not provided real-world runtime figures in the supplied material, so battery life remains a review question rather than a launch claim.
MLXIO has also tracked higher-capacity Lenovo mobile workstation configurations, including the ThinkPad P16s Gen 5’s early European listing. The ThinkBook 14x sits at the opposite end of the weight spectrum, but both stories point to Lenovo leaning on configuration variety across its laptop lines.
Around $1,460 may be the first U.S. pricing signal
Lenovo has not fully detailed all regional launch information. Early retailer listings suggest the ThinkBook 14x may launch at around $1,460 in the U.S. with a Core Ultra 5 226V, 16 GB RAM, and an 1800p OLED display.
That price is not the same as a confirmed global MSRP. Regional SKUs could vary by processor, RAM, battery size, storage, and display configuration. Lenovo’s full market-by-market lineup will determine whether the ThinkBook 14x lands as a premium ultraportable value play or a narrowly configured high-end model.
There is also one identity question around the product. Multiple sources cited in the source material suggest the ThinkBook 14x may be the global version of the ThinkBook X AI 2026 recently released in China. That China-market model is said to weigh about 1 kg, measure 12.9 mm at its thinnest point, and offer up to a Core Ultra 7 258V.
The next test is not whether the spec sheet looks strong. It does. The useful questions are whether Lenovo keeps the dual-slot storage design across regions, how the OLED panel affects battery life, how the thin chassis handles sustained Core Ultra performance, and whether the final U.S. and global prices stay close to the early $1,460 signal.
Key Takeaways
- The ThinkBook 14x drops below 1 kg while still offering high-end specs.
- Its dual SSD slot layout gives buyers more storage flexibility than many thin laptops.
- Global launch details suggest Lenovo is pushing harder into premium ultraportable 14-inch laptops.
