Even the cheapest smart TVs now advertise 4K UHD resolution, HDR support and the same streaming apps as premium models, but the real differences lie beneath the surface, in the display panel and processing hardware rather than the software features. Understanding these hidden factors helps buyers decide whether spending more actually improves picture quality for their specific viewing needs, rather than paying purely for a bigger number on the box.

The display panel accounts for most of the price gap: budget TVs typically use basic LED-backlit LCD panels with poor local light control, producing washed-out blacks and inconsistent brightness, whereas pricier sets use QLED (quantum-dot colour), Mini LED (smaller, more numerous dimming zones) or Micro RGB backlights, with OLED panels—where each pixel emits its own light for perfect blacks—sitting at the top. The other major factor is the processor, or system-on-a-chip, which decodes video and upscales lower-resolution content; cheaper chips produce softer, less detailed images and struggle with AI-assisted upscaling, while costlier TVs also support higher refresh rates (120Hz versus 60Hz, useful for gaming with consoles like the PS5) and respond faster when navigating menus and apps.