Monitor boxes list HDR badges like DisplayHDR 400, 600, 1000, and True Black 400 or 600, and the numbers imply a simple ladder where bigger is better. The reality is more nuanced, especially because the True Black tiers for OLED play by different rules than the brightness-focused LCD tiers. Here is what each certification actually guarantees.
What DisplayHDR certifies
DisplayHDR is a VESA standard that sets minimum requirements for peak brightness, contrast, color gamut, and dimming behavior. A number badge means the panel met those minimums in testing, which makes it more trustworthy than a vague “HDR supported” label that can mean almost nothing. The catch is that meaningful HDR needs both high brightness and real local dimming, and the lower tiers deliver little of the second.
The LCD brightness tiers
The standard DisplayHDR tiers target LCD panels and scale mainly by peak brightness. The table lays out the key ones.
| Tier | Min peak brightness | Local dimming | Real HDR experience |
|---|---|---|---|
| DisplayHDR 400 | 400 nits | Not required | Marginal, near-SDR |
| DisplayHDR 600 | 600 nits | Required | Good entry HDR |
| DisplayHDR 1000 | 1000 nits | Required, more zones | Strong |
| DisplayHDR 1400 | 1400 nits | Required, many zones | Premium LCD |
Why True Black is a separate ladder
Built for OLED contrast
The True Black tiers, 400, 600, and above, are designed for OLED and other self-emissive panels whose strength is perfect blacks rather than blinding brightness. They demand extremely low black levels, near zero nits, and strong contrast, so a True Black 400 OLED can look more impressive in a dim room than a DisplayHDR 600 LCD despite the lower brightness number. Peak brightness and black depth are different currencies.
Reading the badges honestly
Treat DisplayHDR 400 as essentially not real HDR, since it lacks the local dimming that makes highlights pop against dark areas. Start taking HDR seriously at DisplayHDR 600 for LCD or any True Black tier for OLED. Above that, more brightness helps in bright rooms and with punchy HDR content, while OLED’s per-pixel control wins for contrast in controlled lighting.
Why local dimming zones matter more than the number
The tier number captures brightness, but the quality of local dimming often decides how HDR actually looks on an LCD. A panel with a handful of dimming zones brightens and darkens large regions together, causing blooming, a halo of light around bright objects on dark backgrounds. A mini-LED display with hundreds or thousands of zones controls light far more precisely, so highlights pop without washing out nearby shadows. Two DisplayHDR 1000 monitors can look very different depending on their zone count, which is why the badge alone is not the whole story.
Matching the tier to your room
Lighting should steer your choice as much as the certification. In a bright room, a high-nit mini-LED, DisplayHDR 1000 or 1400, cuts through ambient light and keeps HDR impactful. In a dim or dark room, an OLED with a True Black tier delivers reference contrast and inky blacks that a bright LCD cannot match, and its lower peak brightness is rarely a limitation without competing light. Decide where and how you watch and game first, then pick the tier and panel technology that suits those conditions.
FAQ
Is DisplayHDR 400 worth paying for?
Rarely as an HDR feature. Without required local dimming, HDR content looks close to SDR. If a panel is great for other reasons, fine, but do not choose it for HDR; step up to 600 or an OLED True Black tier.
Is True Black 400 worse than DisplayHDR 1000?
Not simply. True Black 400 (OLED) delivers perfect blacks and superb contrast but lower peak brightness, while DisplayHDR 1000 (LCD) is far brighter with slightly imperfect blacks. In a dim room OLED often looks better; in a bright room the high-nit LCD can win.
Bottom line
DisplayHDR badges certify minimum HDR performance, with the standard tiers scaling by brightness and the True Black tiers built around OLED’s perfect blacks. DisplayHDR 400 is barely HDR, real quality starts at 600 for LCD or any True Black tier for OLED, and higher numbers mainly buy brightness for bright rooms. Match the tier and panel type to your lighting and content rather than chasing the biggest number.
