LG QNED85A vs Samsung S90F OLED: Which 65" TV Is Right for Your Home?

Choosing a new TV can feel overwhelming, especially when you're comparing two completely different technologies at vastly different price points. The LG 65" QNED evo AI QNED85A 4K MiniLED Smart TV 2025 at $999.99 and the Samsung 65" S90F OLED 4K Vision AI Smart TV 2025 at $1,797.99 represent two fundamentally different approaches to creating the perfect picture. After spending time with both technologies, I can tell you that understanding these differences is crucial to making the right choice for your home.

Understanding Modern TV Technologies

Before diving into specifics, let's talk about what makes these TVs tick. Both represent significant advances in display technology, but they achieve great picture quality through completely different methods.

The LG QNED85A uses MiniLED technology, which is essentially a more sophisticated version of traditional LED TVs. Instead of having a few dozen LED lights behind the screen, MiniLED uses thousands of tiny LEDs (about 30,000 in this model) arranged in zones that can brighten or dim independently. This creates much better contrast than older LED TVs. The "QNED" part refers to quantum dots combined with NanoCell technology - these are microscopic particles that help create more accurate, vibrant colors.

The Samsung S90F, on the other hand, uses QD-OLED technology. OLED stands for Organic Light Emitting Diode, which means each pixel produces its own light and can turn completely off for perfect blacks. Samsung's twist is adding quantum dots to this OLED panel, creating what they call QD-OLED. This combination aims to deliver OLED's perfect contrast with brighter, more colorful images than traditional OLED panels.

The Technology Battle: MiniLED vs QD-OLED

How MiniLED Works in Practice

Having tested the LG extensively, the MiniLED implementation is impressive. Those 30,000 LEDs are organized into about 2,500 dimming zones, meaning the TV can control brightness in very small sections of the screen. When you're watching a movie with bright stars against a dark night sky, the zones behind the stars can be bright while the zones behind the dark sky stay dim. This creates much better contrast than traditional LED TVs.

The quantum dot layer adds another level of sophistication. These microscopic particles convert the LED backlight into more pure colors, achieving what LG calls "100% color volume." In practical terms, this means colors look more vibrant and accurate, especially in HDR content where wider color ranges really shine.

The QD-OLED Advantage

The Samsung's QD-OLED approach is fundamentally different. Each pixel is self-illuminating, meaning it can turn completely off for true black or shine brightly for highlights. There's no backlight to control - just 8.3 million pixels doing exactly what they need to do independently. The quantum dot layer enhances this by making colors more saturated and allowing the panel to get brighter than traditional OLED displays.

This pixel-level control creates what's called "infinite contrast." When you see a scene with both bright sunlight and deep shadows, every pixel can be exactly as bright or dark as it needs to be. There's no compromise, no light bleeding from one area to another - just perfect gradation from the brightest whites to the deepest blacks.

Picture Quality: Where the Rubber Meets the Road

Brightness Performance

This is where the two TVs diverge significantly. The LG QNED85A can achieve peak brightness levels around 1,500 nits or higher, making it exceptional for bright rooms. Those MiniLEDs can really pump out the light when needed. I've tested this TV in my south-facing living room with large windows, and even during sunny afternoons, HDR content looks punchy and vibrant.

The Samsung S90F reaches approximately 1,000-1,200 nits, which is excellent for an OLED but still less than the LG. However, this brightness difference matters most in very bright environments. In most normal lighting conditions, both TVs deliver excellent HDR performance.

Contrast and Black Levels: The OLED Advantage

Here's where the Samsung pulls ahead decisively. OLED's ability to turn individual pixels completely off creates perfect blacks that the LG simply cannot match. Even with all those dimming zones, the LG's backlight can never fully turn off, so blacks appear more like very dark gray. This difference is most noticeable in dark room viewing, where the Samsung's infinite contrast creates a more immersive, cinema-like experience.

The practical impact is significant. When watching movies with dark scenes - think of any Marvel movie's nighttime sequences - the Samsung maintains perfect shadow detail while keeping blacks truly black. The LG performs admirably but you might notice some "blooming" around bright objects in dark scenes, where the backlight zones can't perfectly contain the light.

Color Accuracy and Volume

Both TVs excel in color reproduction, but through different approaches. The LG's quantum dot implementation delivers what they call "100% color volume," verified by independent testing. This means the TV can reproduce a wide range of colors at various brightness levels, not just in ideal conditions.

The Samsung's QD-OLED combination pushes color performance even further. The quantum dots enhance the already impressive OLED color capabilities, creating more saturated, accurate colors across the entire brightness range. In side-by-side comparisons, the Samsung often appears more vibrant and lifelike, especially in HDR content where the wider color gamut really shows.

Gaming Performance: Speed Matters

Response Times and Input Lag

For gaming, response time (how quickly pixels can change color) and input lag (delay between controller input and on-screen response) are crucial. The Samsung S90F dominates here with a response time around 0.1ms and input lag of just 9.2ms. These are industry-leading numbers that make fast-paced gaming feel incredibly responsive.

The LG QNED85A performs well with approximately 1ms response time and competitive input lag, but it can't match the Samsung's OLED advantage. The difference might not be noticeable in casual gaming, but serious gamers will appreciate the Samsung's edge in competitive titles.

Gaming Features and Connectivity

Both TVs offer comprehensive gaming features, but the Samsung goes further. It supports 4K gaming at up to 144Hz (compared to the LG's 120Hz), includes both FreeSync and G-Sync compatibility, and features Samsung's Gaming Hub with cloud gaming services built-in. The LG provides solid gaming features including VRR (Variable Refresh Rate) and Game Optimizer settings, but the Samsung's implementation is more comprehensive.

Both TVs include four HDMI 2.1 ports, ensuring you can connect multiple gaming consoles and high-bandwidth devices without compromise. This is crucial for modern gaming where 4K at high refresh rates requires significant bandwidth.

Smart Features and AI: The Brain Behind the Beauty

Processing Power and AI Enhancement

The Samsung's NQ4 AI Gen3 processor represents a significant leap in TV processing power. This chip handles everything from upscaling lower-resolution content to analyzing room acoustics for optimal sound. The AI continuously analyzes what you're watching and adjusts picture settings accordingly - brightening dark scenes when needed, enhancing sports motion, or optimizing movie color palettes.

The LG's α8 Gen 2 AI processor offers similar capabilities with some unique twists. The AI Picture Pro feature analyzes content in real-time, while AI Sound Pro creates virtual surround sound from the built-in speakers. The LG's AI also includes personalization features like voice recognition and customized recommendations based on individual viewing habits.

Operating Systems and Longevity

LG's webOS 25 platform offers something valuable: a five-year upgrade guarantee. This means your TV will receive new features and security updates for five years, ensuring it stays current with streaming services and smart home integration. The interface is intuitive and customizable, with features like Quick Cards for organizing apps and instant access to over 300 free LG channels.

Samsung's Tizen platform is equally capable but doesn't offer the same long-term update commitment. However, it integrates well with Samsung's ecosystem and includes features like Samsung Vision AI for content analysis and Microsoft Copilot integration for enhanced smart home control.

Audio Performance: More Than an Afterthought

While TV speakers are rarely the star of the show, there are noticeable differences. The Samsung S90F includes Adaptive Sound Pro technology that analyzes both the content you're watching and your room's acoustics to optimize audio. In my testing, dialogue is clearer and the overall sound is more balanced than typical TV speakers.

The LG QNED85A offers AI Sound Pro with virtual surround sound processing, but the Samsung's implementation sounds more natural and less processed. Both TVs work well with soundbars, but if you're planning to use built-in speakers, the Samsung has a slight edge.

Home Theater Considerations

Dark Room Performance

For a dedicated home theater or basement setup, the Samsung S90F is the clear winner. Perfect blacks and infinite contrast create a truly cinematic experience that draws you into the content. The wide viewing angles mean everyone in the room gets the same great picture, regardless of seating position.

The LG QNED85A performs well in dark rooms but can't match the Samsung's contrast performance. However, it's still a significant upgrade from standard LED TVs and offers excellent value for mixed-use spaces.

Bright Room Versatility

If your TV lives in a bright family room or living space with lots of windows, the LG's superior brightness becomes a major advantage. That extra brightness cuts through ambient light, maintaining vibrant HDR performance even during sunny afternoons. The Samsung, while bright for an OLED, may struggle more in very bright environments.

Value Proposition: Performance Per Dollar

The Budget-Conscious Choice

At $999.99, the LG QNED85A offers exceptional value for a premium 65" TV. You're getting advanced MiniLED technology, comprehensive smart features, excellent gaming performance, and a five-year software update guarantee. For many buyers, this represents the sweet spot between performance and price.

The Premium Experience

The Samsung S90F at $1,797.99 costs significantly more but delivers reference-quality performance. The perfect blacks, superior gaming features, and cutting-edge QD-OLED technology justify the premium for enthusiasts who want the absolute best viewing experience.

Making Your Decision

After extensive testing with both TVs, here's my take on who should choose what:

Choose the LG if you:

• Have a bright living room where the TV will be used during the day
• Want excellent performance at a more accessible price point
• Value long-term software support and reliability
• Need a versatile TV for the whole family
• Are upgrading from an older LED TV and want a significant improvement

Choose the Samsung if you:

• Prioritize the absolute best picture quality
• Have a dedicated viewing room or can control ambient light
• Are a serious gamer wanting the fastest response times
• Can justify spending extra for premium performance
• Want cutting-edge display technology

The truth is, both TVs represent excellent choices in their respective categories. The LG delivers about 80% of the Samsung's picture quality at roughly 55% of the price, making it exceptional value. The Samsung provides that last 20% of performance that matters most to enthusiasts and creates truly reference-quality viewing experiences.

Your room environment often makes the decision for you. Bright rooms favor the LG's superior brightness, while dark rooms showcase the Samsung's perfect contrast. Either way, you'll be getting a TV that represents the current state of the art in home entertainment technology.

LG 65" QNED evo AI QNED85A 4K MiniLED Smart TV 2025 Deals and Prices

Samsung 65" S90F OLED 4K Vision AI Smart TV 2025 Deals and Prices