Reviewer records first drop in overall brightness after 21 months of burning in his QD-OLED monitor — but the 2% decrease isn't likely to be noticeable

Source: Tom’s Hardware

Key Findings

After 5,000 hours of torture testing over 21 months, Monitors Unboxed has shared the latest effects of that stress on an MSI MPG 321URX OLED monitor. Beyond burn‑in, the display is beginning to exhibit signs of gradual brightness degradation.