AOC U32U4 4K QD-OLED monitor, Digi Mart USA News: AOC has put its 31.5-inch U32U4 monitor on sale in China for CNY 6,499, according to a Notebookcheck report. The display pairs a 4K resolution of 3,840 × 2,160 pixels with a 120 Hz refresh rate.
The monitor uses Samsung Display’s Penta Tandem QD-OLED technology, which features five stacked light-emitting layers designed to improve brightness and panel longevity. According to the published specifications, the U32U4 supports native 10-bit color and covers 99% of the DCI-P3 color space, with a claimed peak HDR brightness of 1,000 nits.
AOC also advertises a 1,500,000:1 contrast ratio and a 0.03 ms gray-to-gray response time. These figures are manufacturer claims and have not been independently verified in the source report.
On connectivity, the monitor includes HDMI 2.1 and DisplayPort, along with two USB-C ports providing up to 96 W and 15 W respectively. It also has a built-in KVM switch, two 5 W speakers and an adjustable stand.
The report notes that AOC introduced a similarly specified model, the U32U4D, in China on October 24, less than three weeks before the U32U4 appeared. Both share a 31.5-inch 4K QD-OLED panel, a 120 Hz refresh rate and 96 W USB-C charging, although the exact differences between them remain unclear and their reported launch prices differ slightly.
Notebookcheck also previously covered AOC’s U32G5D, which uses related panel technology but offers a 180 Hz refresh rate at a considerably lower Chinese launch price. International availability and pricing for the U32U4 remain unconfirmed.
