ASUS ROG Zephyrus G14 (2026) GU405 / MSI Stealth 18 HX AI A2XWJG-035US

ASUS does not give a separate on-sale date per model code.

ASUS’s GU405 page also lists GU405AR-XB96 (Windows 11 Pro); this entry is the ZP/G14_97T column.

Arrow Lake-HX generation 24-core processor (8 performance, 16 efficiency) on the Intel HM870 chipset. There is no Hyper-Threading, so each core runs one thread.

Intel’s processor figure; ASUS does not publish a separate CPU power limit for this laptop.

For both modes ASUS adds 50 MHz OC to a 1762 MHz boost clock. The model page does not give GPU power for Silent and Performance modes.

The 16:10 panel is an LCD lit from behind by many small LED zones; local dimming gives high brightness and contrast in HDR content, though halos can appear around bright objects in dark scenes. MSI’s family page describes the panel as "IPS-Level".

HDR peak brightness is not a sustained full-screen figure. ASUS’s January 2026 introduction gives 1000 nits peak; the 1100 nits from the sales announcement is used.

ASUS lists this model code in both 16 GB and 32 GB columns; this entry is the 16 GB column. Actual memory speed may vary by processor configuration.

Both slots come populated, so an upgrade means replacing the modules. MSI lists support up to DDR5-6400; the actual speed depends on the memory combination and the CPU.

There is no second SSD slot; MSI advises consulting a service centre before upgrading the SSD.

Bluetooth features depend on OS and driver support.

Whether a charger is included varies by country, region and model.

ASUS’s announcements give 1.5–1.58 kg for the GU405 family; this model page lists 1.58 kg.

The laptop RTX 5090 is not the same card as the desktop RTX 5090. 150 W is the ceiling MSI sets for this thin chassis, so slightly lower GPU performance than thicker 175 W models is expected. MSI quotes 1824 AI TOPS.

Thunderbolt 4 carries 40 Gbit/s data and video over the USB-C shaped port. This model has no Thunderbolt 5.

SD Express uses a PCIe/NVMe interface for much faster transfers with compatible cards; ordinary SD cards are still read.

The IR camera enables Windows Hello face sign-in.

99.9 Wh is just under the common airline carry-on battery limit. Full GPU performance needs the 280 W adapter.