Samsung QLED QN90A vs. LG NanoCell NANO75: A Detailed Comparison of Quality, Cost, and Performance

In the competitive world of 4K TVs, Samsung’s QLED QN90A and LG’s NanoCell NANO75, both from 2021, represent two distinct approaches to delivering high-quality visuals. The QN90A is a high-end QLED TV leveraging Mini LED backlighting and quantum dot technology, while the NANO75 is an entry-level NanoCell TV using an IPS panel with nanoparticle enhancements for improved color purity. This article compares the Samsung QLED QN90A and LG NanoCell NANO75 in terms of picture quality, cost, and their target audiences, concluding with a final verdict on which TV comes out on top.

Understanding the Technologies

Samsung QLED QN90A

The Samsung QN90A is a flagship QLED TV featuring a VA (Vertical Alignment) panel with Mini LED backlighting and a quantum dot layer. The Mini LED system uses thousands of tiny LEDs for precise local dimming, enhancing contrast and black levels. Paired with Samsung’s Quantum Matrix Technology and Neural Quantum Processor 4K, the QN90A delivers vibrant colors, high brightness, and improved viewing angles with its “Ultra Viewing Angle” technology. It’s designed for premium performance across various viewing conditions.

LG NanoCell NANO75

The LG NanoCell NANO75 is an entry-level NanoCell TV that uses an IPS (In-Plane Switching) panel with a nanoparticle layer to filter light and enhance color purity, covering over 90% of the DCI-P3 color gamut. It lacks advanced backlighting like Mini LED, relying on edge-lit or direct LED systems, which limits contrast performance. The NANO75 is powered by LG’s α5 Gen 4 AI Processor and runs on webOS, offering a budget-friendly option for casual viewers.

Picture Quality Comparison

Contrast and Black Levels

• Samsung QLED QN90A: The QN90A’s VA panel, combined with Mini LED backlighting and full-array local dimming (FALD), delivers excellent contrast and deep blacks for an LCD-based TV. Its high number of dimming zones (up to 576 in larger sizes) minimizes blooming and light bleed, producing dark scenes with impressive depth, though not as perfect as OLED.
• LG NanoCell NANO75: The NANO75’s IPS panel struggles with contrast, producing weaker blacks that appear as dark grays in dim settings. Its edge-lit or direct LED backlight lacks local dimming in most configurations, leading to noticeable light bleed in high-contrast scenes, making it less ideal for dark-room viewing.

Winner: Samsung QN90A for its superior contrast and deeper blacks, ideal for movies in dim environments.

Brightness

• Samsung QLED QN90A: The QN90A is exceptionally bright, reaching peak brightness levels of around 1,800–2,000 nits in HDR mode, thanks to its Mini LED backlighting. This makes it highly effective in bright rooms, easily overcoming glare and delivering vibrant HDR highlights.
• LG NanoCell NANO75: The NANO75 has modest brightness, typically around 300–500 nits, which is adequate for moderately lit rooms but struggles in very bright environments. Its IPS panel offers better reflection handling than many VA panels, but its lower peak brightness limits HDR impact.

Winner: Samsung QN90A for its significantly higher brightness, perfect for well-lit spaces.

Color Accuracy and Vibrancy

• LG NanoCell NANO75: The NANO75’s nanoparticle layer enhances color purity, covering over 90% of DCI-P3 and delivering accurate, natural colors. It excels in producing smooth color transitions, particularly for reds and greens, making it suitable for content creators or movie lovers seeking lifelike hues.
• Samsung QLED QN90A: The QN90A’s quantum dot layer achieves near 100% DCI-P3 coverage, producing vibrant, dynamic colors that pop, especially in bright scenes. Its out-of-the-box color accuracy is excellent, though it may prioritize vibrancy over absolute precision.

Winner: Tie. The NANO75 offers slightly better color accuracy for natural tones, while the QN90A excels in vibrant, punchy colors for HDR content.

Viewing Angles

• LG NanoCell NANO75: The NANO75’s IPS panel provides wide viewing angles, maintaining color and contrast consistency even when viewed from the side. This makes it ideal for group viewing or rooms with varied seating arrangements.
• Samsung QLED QN90A: Unlike most VA-panel QLEDs, the QN90A incorporates “Ultra Viewing Angle” technology, significantly improving off-axis performance compared to other Samsung models like the Q60A. However, it still falls short of IPS panels in maintaining color saturation at extreme angles.

Winner: LG NanoCell NANO75 for its superior viewing angles, perfect for group settings.

Motion Handling and Gaming

• Samsung QLED QN90A: The QN90A features a 120Hz refresh rate, one HDMI 2.1 port, VRR, and ALLM, with low input lag (~10ms in Game Mode). Its response time is fast for an LCD, minimizing motion blur, though not as instantaneous as OLED. It supports FreeSync but lacks G-SYNC compatibility.
• LG NanoCell NANO75: The NANO75 typically has a 60Hz refresh rate and lacks HDMI 2.1 in most configurations, limiting its gaming capabilities to 4K@60Hz. It offers decent motion handling and low input lag but lacks VRR and advanced gaming features, making it less suitable for next-gen consoles.

Winner: Samsung QN90A for its superior gaming features and motion handling.

Burn-In Risk

• LG NanoCell NANO75: As an LCD-based TV, the NANO75 is immune to burn-in, making it safe for prolonged static content like news tickers or game HUDs.
• Samsung QLED QN90A: Similarly, the QN90A’s LCD panel is burn-in-free, offering peace of mind for users with varied content consumption.

Winner: Tie. Both TVs are immune to burn-in, suitable for diverse usage.

Cost Comparison

Samsung QLED QN90A

• Price Range: In 2021, the QN90A was priced at approximately $1,800 for a 55-inch model, $2,600 for a 65-inch, and $3,500 for an 85-inch. Its premium pricing reflects its advanced Mini LED backlighting and gaming features.
• Value Proposition: The QN90A offers near-OLED contrast, exceptional brightness, and robust gaming features at a lower cost than many OLEDs, appealing to buyers seeking high-end performance without the OLED price tag.

LG NanoCell NANO75

• Price Range: The NANO75 was significantly more affordable, with 2021 prices starting at around $700 for a 55-inch model, $900 for a 65-inch, and $1,200 for a 75-inch. Its entry-level positioning makes it accessible to budget-conscious consumers.
• Value Proposition: The NANO75 provides decent color accuracy and wide viewing angles at a budget-friendly price, ideal for casual viewers who don’t need premium features like local dimming or HDMI 2.1.

Winner: LG NanoCell NANO75 for its affordability and excellent value for budget buyers.

Additional Considerations

Energy Efficiency

• LG NanoCell NANO75: The NANO75’s IPS panel and edge-lit/direct LED backlight consume less power in darker scenes but may use more in bright settings due to reflection handling.
• Samsung QLED QN90A: The QN90A’s Mini LED backlight increases power consumption, especially in bright scenes, due to its high brightness and local dimming.
  Winner: LG NanoCell NANO75 for slightly better energy efficiency.

Smart Features

• LG NanoCell NANO75: Runs on webOS, an intuitive platform with a Magic Remote, supporting ThinQ AI, Google Assistant, Alexa, and Apple AirPlay/HomeKit. It offers a wide range of streaming apps.
• Samsung QLED QN90A: Uses Tizen OS, known for its smooth interface and SmartThings integration. It supports Bixby, Alexa, and Google Assistant (via third-party devices) but lacks native AirPlay support.
  Winner: LG NanoCell NANO75 for broader smart home compatibility, including AirPlay.

Durability and Longevity

• LG NanoCell NANO75: The NANO75’s IPS panel is durable and burn-in-free, but its contrast may degrade slightly over time compared to VA panels.
• Samsung QLED QN90A: The QN90A’s VA panel with Mini LED is highly durable and resistant to image retention, offering reliable long-term performance.
  Winner: Samsung QN90A for slightly better panel durability.

Final Verdict: Which Is Better?

The Winner: Samsung QLED QN90A

The Samsung QLED QN90A emerges as the clear winner due to its superior picture quality, driven by Mini LED backlighting, which delivers excellent contrast, deep blacks, and exceptional brightness. Its high peak brightness (up to 2,000 nits) makes it ideal for bright rooms, while its gaming features, including HDMI 2.1 and VRR, cater to modern gamers. The “Ultra Viewing Angle” technology also narrows the gap with IPS panels, making it versatile for various settings.

However, the LG NanoCell NANO75 is a compelling budget option, offering wide viewing angles and accurate colors at a significantly lower price. Its IPS panel excels for group viewing, and its reflection handling is slightly better, but it lags in contrast, brightness, and gaming capabilities. It’s a solid choice for casual viewers on a budget.

Target Audience

• Samsung QLED QN90A: Ideal for movie enthusiasts, gamers, and viewers in bright environments who prioritize high contrast, vibrant colors, and advanced gaming features. It’s perfect for those willing to invest in a premium TV for a home theater or gaming setup, especially in well-lit rooms or mixed lighting conditions.
• LG NanoCell NANO75: Suited for budget-conscious families, casual viewers, or those with wide seating arrangements who need wide viewing angles and decent color accuracy. It’s great for living rooms with group viewing, moderate lighting, or general entertainment like sports and streaming.

Final Thoughts

The choice between the Samsung QLED QN90A and LG NanoCell NANO75 depends on your budget, viewing environment, and priorities. If you seek premium picture quality, brightness, and gaming performance and can afford the higher cost, the QN90A is the superior choice for a versatile, high-end experience. For budget-conscious buyers prioritizing affordability and group viewing, the NANO75 delivers solid performance at a fraction of the price. Both TVs cater to distinct needs, ensuring a satisfying viewing experience for their respective audiences.

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