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Updated
Pros
  • Vibrant and accurate colors
  • Advanced AI processing
  • Excellent audio quality
  • Optimized for gaming
  • Smooth motion handling
  • Advanced picture processing
Cons
  • Higher price for 4K
  • Limited native 4K content
  • Higher price for gaming features
  • Limited viewing angles
Bottom Line
The LG QNED90 offers a brilliant 4K display with Quantum Dot technology and advanced AI features for a truly immersive viewing experience.
The Sony X90K is a QLED TV designed for gamers, offering a 120Hz refresh rate and advanced gaming features.
Screen Size
55, 65, 75 inches
55, 65, 75 inches
Resolution
3840 x 2160
3840 x 2160
HDR
Dolby Vision IQ
HDR10, HLG
Processor
α9 Gen 5 AI Processor
Cognitive Processor XR
Ports
4 HDMI, 3 USB
4 HDMI, 2 USB
Audio
Dolby Atmos
Acoustic Multi-Audio
Height
35.4 Inches
29.25 Inches
Length
11.5 Inches
48.63 Inches
Width
56.9 Inches
13.13 Inches
Weight
-
40.8 pounds
Part Number
65QNED90UPA
XR55X90K
Model
65QNED90UPA
XR55X90K

The LG QNED90 and Sony X90K are two high-end TVs that have been making waves in the market with their impressive features and performance. Both models belong to the esteemed category of QLED smart TVs, which are known for their exceptional picture quality, sleek designs, and advanced smart features.

Display Technology

The LG QNED90 boasts a Quantum Dot NanoCell display, which is a proprietary technology developed by LG. This technology uses tiny crystals to create colors, resulting in a wider color gamut and improved color accuracy. On the other hand, the Sony X90K features an X1 Ultimate processor-powered QLED panel, which utilizes a different approach to achieve similar results. While both displays are excellent, the LG QNED90's Quantum Dot technology gives it a slight edge in terms of color reproduction and brightness.

Picture Quality

In terms of picture quality, both TVs excel in different areas. The Sony X90K has a higher peak brightness, making it better suited for very bright rooms or outdoor viewing. However, the LG QNED90 has a more nuanced approach to contrast, with deeper blacks and a wider range of tonal values. This makes it ideal for watching movies or TV shows in a dark room, where every detail matters. Both TVs support HDR10, HLG, and Dolby Vision, ensuring that you get the best possible picture quality regardless of the content.

Smart Features

As QLED smart TVs, both models come with advanced smart features that make it easy to navigate and discover new content. The LG QNED90 runs on webOS, a user-friendly interface that provides quick access to popular streaming services like Netflix, Amazon Prime Video, and Disney+. The Sony X90K, on the other hand, uses the Google TV platform, which offers a more personalized experience with recommendations based on your viewing habits. Both platforms are seamless and responsive, but the LG QNED90's webOS might have a slight edge in terms of simplicity and ease of use.

Gaming Performance

For gamers, both TVs offer excellent performance, with low input lag and fast response times. The LG QNED90 has a slightly faster response time, making it better suited for fast-paced games like first-person shooters or fighting games. However, the Sony X90K has a more comprehensive set of gaming features, including support for HDMI 2.1, variable refresh rate (VRR), and auto-low latency mode (ALLM). This makes it an excellent choice for gamers who want to take full advantage of their console's capabilities.

Sound Quality

In terms of sound quality, both TVs have their strengths and weaknesses. The LG QNED90 has a more immersive audio experience, with a wider soundstage and better dialogue clarity. However, the Sony X90K has a more nuanced approach to bass response, with deeper and more resonant low frequencies. Both TVs support Dolby Atmos and DTS:X, ensuring that you get an immersive audio experience regardless of the content.

Conclusion

In conclusion, both the LG QNED90 and Sony X90K are excellent QLED smart TVs that offer outstanding picture quality, advanced smart features, and impressive gaming performance. While the LG QNED90 has a slight edge in terms of color reproduction and contrast, the Sony X90K excels in terms of peak brightness and gaming features. Ultimately, the choice between these two models will depend on your specific needs and preferences. If you prioritize picture quality and a more nuanced approach to contrast, the LG QNED90 might be the better choice. However, if you're looking for a TV with a more comprehensive set of gaming features and a brighter display, the Sony X90K is an excellent option.