Asus ROG Strix XG129C: Best Secondary Monitor 2026

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Most people who game or work at a desk know the frustration of cluttering their main monitor with chat windows, performance stats, or stream controls. Asus built a product around that exact problem.

The ROG Strix XG129C is a 12.3-inch touchscreen display that sits below your primary monitor. It handles the secondary stuff like system metrics, chat, and streaming tools, so your main screen stays clean. The price is $199.

Asus ROG Strix XG129C

Asus ROG Strix XG129C features

The XG129C runs a 1920 x 720 resolution on an IPS panel with a 24:9 aspect ratio. That means it’s wide and short, which is exactly what makes it work as a secondary screen. It fits under your main monitor without eating into your vertical desk space.

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The touchscreen supports 10-point capacitive input, so you can run multi-finger gestures, launch app shortcuts, trigger hotkeys, and manage streaming overlays directly from the panel.

Asus ROG Strix XG129C

Color accuracy is better than you would expect for a screen in this role. It covers 125% of the sRGB color space and 90% of DCI-P3, which puts it well above what most secondary displays offer.

Asus throws in a one-year AIDA64 Extreme subscription with the purchase. That software connects directly to the display and shows live hardware data such as GPU load, CPU temperature, and fan speeds, all formatted using ROG’s own SensorPanel themes.

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Cable management is simple. One USB-C handles power, video, and touch input at the same time. If you need more options, there’s a second USB-C port with 20W power delivery and an HDMI 1.2 port for connecting other devices.

How is Asus ROG Strix XG129C different from the competition?

The Elgato Stream Deck gives you physical buttons but no real screen. The Strix XG129C gives you a full touchscreen, which means more flexibility in what you can display and control, all from a single panel.

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The closest competitor is the Corsair Xeneon Edge, which comes in at 14.5 inches at a similar price point. The XG129C is smaller, but its aspect ratio fits the under-monitor position better, and if you already use ROG gear, the ecosystem integration gives it a clear edge.

The concept itself feels familiar. Asus put a dual-screen setup in their Zephyrus Duo laptops years ago, with a secondary panel sitting below the main display. The XG129C takes that same idea and brings it to a desktop setup, executed with more purpose and polish than the laptop version ever had.