IPS, IPS Black, Nano IPS or QD-OLED: which panel to choose

IPS — the versatile benchmark

IPS dominates the market for a good reason: very wide viewing angles, stable colours, controlled price. Its weak point is contrast, generally around 1000:1: black appears dark grey there, which shows in a dark room. It is the panel in the P27L, P27D and G32X.

Fast IPS — accelerated IPS

Same principle, reduced response time. The gain shows on fast-moving images: less trailing behind a moving object. Contrast, on the other hand, does not change. It is what the P32K and Q34W use, two monitors at 144 and 165 Hz.

Nano IPS — IPS widened in colour

A layer of nanoparticles filters the backlight to refine the light spectrum. The result: higher DCI-P3 coverage, and therefore more accurate reds and greens. It is the technology in the large P40K and P40U formats.

IPS Black — doubled contrast

The real advance of recent years in IPS. By improving the way the panel blocks light in the off state, IPS Black doubles the contrast ratio to 2000:1, without losing any of the qualities of IPS. The shadows in a photo, the dark areas of a film, an interface in dark mode: everything gains from it. It is the panel in the G27P and the G32P.

QD-OLED — absolute black

Here there is no backlight at all: each pixel produces its own light, and a black pixel is simply switched off. Hence a contrast ratio of 1,500,000:1, unbeatable response times and highly saturated colours. Two trade-offs: sustained full-screen brightness is lower than on an IPS, and a still image displayed for hours on end, every day, stresses the panel in a way an IPS never notices. That is the Q32S.

How to choose, in practice

Start from the room and the use, not from the spec sheet.

• You work in a bright room, on light documents: an IPS or IPS Black panel, whose sustained brightness is high, will stay more comfortable than an OLED.
• You edit photos or grade video: IPS Black offers the best balance — doubled contrast, 99% DCI-P3, perfectly stable behaviour over time.
• You game and watch films in a dimly lit room: QD-OLED has no rival. Black really is black there, and responsiveness is unmatched.
• You play competitively: Fast IPS or QD-OLED, depending on whether price or image quality comes first.
• Your monitor shows the same interface ten hours a day: stay with an IPS panel, whichever variant. The burn-in risk on OLED is low, but it is not zero in that specific use.

Contrast, the number people underestimate

Brightness and resolution catch the eye on a spec sheet; contrast, on the other hand, shows every day. Going from 1000:1 to 2000:1 does not double an abstract sensation: it makes the details of an underexposed photo readable, it gives depth to a dark theme, it avoids that greyish veil on night scenes.

It is also the hardest number to make up for with a setting: you can turn down the brightness of a monitor that is too bright, you cannot manufacture black on a panel that does not produce it.

Should you fear OLED burn-in?

The phenomenon is real but often exaggerated. It concerns strictly static images, displayed for a long time, repeatedly: a menu bar, a channel logo, a software interface that is always identical. Recent panels include compensation mechanisms, and mixed use — gaming, video, browsing — poses no problem.

The question to ask is simple: will this monitor display the same thing in the same place, several hours a day, for years? If so, IPS is the untroubled choice. If not, QD-OLED offers an image quality no backlit panel can match.