UPERFECT GR14BU Portable Monitor Reviewed
Tom's Hardware finds the 14-inch OLED touch display delivers strong color coverage but limited brightness when powered by a single cable.
Updated on Nov. 5, 2026 in Computers
Tom's Hardware has published a review of the UPERFECT GR14BU, a 14-inch portable OLED monitor with a 2880 × 1800 (3K) resolution and 120 Hz refresh rate. The device is available for $299 from Amazon, below its $399 manufacturer's suggested retail price.
Why it matters
The review offers independent measurements for buyers weighing a portable OLED touch display against lower-priced alternatives. Its findings on brightness and power delivery show that performance depends on how the monitor is connected.
The GR14BU reached 368.6 nits of maximum brightness when plugged in, short of the 500 nits UPERFECT claimed, and covered 132.2 percent of DCI-P3 and 186.6 percent of sRGB color space. The review did not report whether these results hold across different units.
The players
Tom's Hardware
Tom's Hardware is a technology publication known for hardware reviews, benchmarking and buying guides for PC components and peripherals.
UPERFECT
UPERFECT is a manufacturer of portable displays that markets the GR14BU as a lightweight OLED monitor for laptops and mobile devices.
Amazon
Amazon is a global e-commerce company and the retailer currently selling the GR14BU at its street price.
The details
The GR14BU has an integrated kickstand mounted in the middle of its back panel and can only be used in landscape mode. Five OSD buttons (Power, OSD, Up, Down and Back) control the display, and touch input works in Windows 11. When connected by a single USB-C to USB-C cable the monitor locked at 20 percent brightness, but it boosted to maximum when a second USB-C cable and the wall adapter were used.
Timeline
Tom's Hardware published its review of the GR14BU on November 5, 2026.
Market Landscape
The GR14BU is priced about $30 above the Asus ZenScreen OLED MQ16FC, placing it in a competitive segment of portable OLED monitors. Its pricing and feature set position it against established portable display makers rather than only budget entrants.
For buyers who need a second screen for travel or mobile work, the GR14BU's $299 street price is the figure to compare against other portable monitors. Its brightness results mean users should plan to use a power setup that delivers full output if they need maximum screen brightness.
The takeaway
Before buying a portable OLED monitor, check whether the connection setup will supply full brightness. The GR14BU's results show that a single USB-C cable can limit output well below the rated level.
Further reading
For more on portable displays and other hardware, explore the Computers section.
Source note: This article includes information reported by Tom's Hardware.
