Samsung QLED Q70A vs. LG OLED B3: A Comprehensive Comparison

When choosing a mid-to-high-end 4K television, the Samsung QLED Q70A (2021) and the LG OLED B3 (2023) are two compelling options that showcase the strengths of their respective display technologies. The Q70A is a mid-range QLED model with a VA panel and quantum dot technology, while the B3 is an entry-level OLED offering LG’s signature perfect blacks and contrast. This article compares the Samsung QLED Q70A and LG OLED B3 in terms of picture quality, performance, cost, and target audience to determine the winner and who each TV best serves.

Understanding the Technologies: QLED vs. OLED

• Samsung QLED Q70A (LCD-based QLED): The Q70A uses quantum dot technology layered over an LED backlight to enhance color vibrancy and brightness. It features a VA panel with a direct backlight and local dimming, providing strong contrast for an LED TV. As a mid-range model, it balances performance and cost, with gaming-friendly features.
• LG OLED B3 (OLED): The B3 employs LG’s OLED technology, where each pixel emits its own light, delivering perfect black levels and infinite contrast. As an entry-level OLED, it lacks some of the brightness and processing advancements of LG’s higher-end C3 or G3 models but still offers exceptional picture quality.

These technological differences drive their performance in various viewing environments and use cases.

Picture Quality Comparison

Contrast and Black Levels

• LG OLED B3: OLED technology excels with perfect black levels and a near-infinite contrast ratio, as each pixel can turn off completely, eliminating light bleed. This results in stunning depth and detail in dark scenes, making the B3 ideal for cinematic viewing in dimly lit rooms.
• Samsung QLED Q70A: The Q70A’s VA panel and full-array local dimming (FALD) provide a fantastic contrast ratio for an LED TV, with deeper blacks than IPS-based LEDs. However, it exhibits slight blooming around bright objects in dark scenes and cannot match the OLED’s perfect blacks.

Winner: LG B3 for its superior contrast and black levels, perfect for movie lovers and dark-room viewing.

Brightness

• Samsung QLED Q70A: The Q70A achieves higher peak brightness (around 600–700 nits in HDR), making it better suited for bright rooms with ambient light or sunlight. Its brightness ensures vibrant visuals and combats glare effectively.
• LG OLED B3: The B3 is less bright than higher-end OLEDs like the C3, peaking around 500–600 nits in HDR. While it handles reflections well, it’s not as effective as the Q70A in extremely bright environments.

Winner: Samsung Q70A for its superior brightness, ideal for well-lit living rooms.

Color Performance

• LG OLED B3: The B3 offers a wide color gamut and supports Dolby Vision, delivering vibrant, accurate colors with excellent gradient handling. Its OLED panel ensures rich, lifelike colors, especially for HDR content.
• Samsung Q70A: The Q70A’s quantum dot technology produces vibrant colors and a wide color gamut, supporting HDR10+ but not Dolby Vision. It has good out-of-the-box color accuracy but is slightly less refined than the B3 in color depth.

Winner: LG B3 for its richer colors and Dolby Vision support, enhancing HDR performance.

Viewing Angles

• LG OLED B3: OLEDs are renowned for wide viewing angles, maintaining consistent color and contrast even at off-center positions. This makes the B3 ideal for group viewing or rooms with spread-out seating.
• Samsung Q70A: The Q70A’s VA panel has narrower viewing angles, with colors and contrast degrading when viewed off-axis. This makes it less suitable for wide seating arrangements.

Winner: LG B3 for its wide viewing angles, perfect for multi-person setups.

Motion Handling and Gaming

• LG OLED B3: The B3’s near-instantaneous response time minimizes motion blur, making it excellent for fast-paced sports and gaming. It supports 4K/120Hz, VRR, ALLM, and Dolby Vision gaming via two HDMI 2.1 ports, offering a strong gaming experience, though it lacks the 144Hz support of higher-end LG models.
• Samsung Q70A: The Q70A also supports 4K/120Hz, VRR, ALLM, and FreeSync via one HDMI 2.1 port, making it gaming-friendly. However, its slower response time (around 8–10ms) results in slight motion blur compared to the B3.

Winner: LG B3 for its superior motion handling and Dolby Vision gaming, ideal for casual and competitive gamers.

Burn-In Risk

• LG OLED B3: OLEDs are susceptible to burn-in with prolonged static content (e.g., game HUDs, news tickers). LG’s anti-burn-in features like pixel shifting and screen savers mitigate this, but it remains a concern for heavy users of static content.
• Samsung Q70A: QLEDs are immune to burn-in, making the Q70A a safer choice for users who frequently display static images, such as news channels or PC monitors.

Winner: Samsung Q70A for its burn-in immunity, appealing to users with static content needs.

Cost Comparison

Pricing varies by size, retailer, and availability, but here’s a general comparison based on 2025 market trends for a 55-inch model:

• Samsung QLED Q70A (55”): As a 2021 model, the Q70A is often discounted, retailing around $700–$900. Its age and mid-range positioning make it a cost-effective option for a QLED TV.
• LG OLED B3 (55”): As a 2023 model, the B3 is priced higher, typically around $1,000–$1,200. Its OLED technology commands a premium, though it’s more affordable than LG’s C3 or G3 models.

Winner: Samsung Q70A for its lower cost, offering strong value for budget-conscious buyers. The B3’s price reflects its superior picture quality.

Additional Considerations

Smart Features and Software

• LG OLED B3: Runs on webOS, a user-friendly platform with a wide app selection, AirPlay 2, and HomeKit support. It’s intuitive but not as sleek as some competitors’ interfaces.
• Samsung Q70A: Uses Tizen OS, a polished platform with a robust app ecosystem, including Samsung TV Plus for free content. It supports voice control and smart home integration.

Winner: Tie. Both platforms are excellent, with the choice depending on user preference.

Sound Quality

• LG OLED B3: Features Dolby Atmos support and 2.2-channel speakers (20W–40W, depending on size), offering decent audio but benefiting from a soundbar for immersive sound.
• Samsung Q70A: Includes Object Tracking Sound Lite and 2-channel speakers (20W), delivering acceptable audio but lacking Atmos depth. A soundbar is recommended.

Winner: LG B3 for its Atmos support, though external audio is ideal for both.

Durability and Longevity

• LG OLED B3: OLED panels may degrade over time, potentially reducing brightness after years of heavy use. Burn-in is a concern, though mitigated by LG’s safeguards.
• Samsung Q70A: QLEDs are more durable, with no burn-in risk and better long-term brightness retention, making them ideal for heavy use.

Winner: Samsung Q70A for its durability and burn-in immunity.

Final Verdict: Which TV Wins?

The LG OLED B3 is the superior choice for picture quality, offering perfect blacks, infinite contrast, wide viewing angles, and better motion handling. It’s the best option for movie enthusiasts, casual gamers, and those watching in darker environments or with group seating. Its support for Dolby Vision and gaming features makes it a versatile premium choice, though its higher price and burn-in risk are considerations.

The Samsung QLED Q70A excels in bright rooms due to its higher peak brightness and is a safer choice for users concerned about burn-in or those displaying static content (e.g., news, PC use). Its lower price makes it appealing for budget-conscious buyers seeking solid performance.

Target Audience

• LG OLED B3: Ideal for home theater enthusiasts, casual gamers, and households with group viewing or darker viewing environments. If you prioritize cinematic picture quality and can afford the premium, the B3 is the choice.
• Samsung QLED Q70A: Best for budget-conscious buyers, those with bright living rooms, or users who frequently display static content (e.g., news tickers, PC monitors). It’s a cost-effective option for mixed-use scenarios.

The Winner

The LG OLED B3 takes the crown for its unmatched picture quality, gaming performance, and versatility, making it the better choice for most buyers seeking a premium mid-range TV in 2025. However, the Samsung Q70A is a strong contender for bright-room viewing, budget shoppers, or those prioritizing durability. Choose based on your viewing environment, budget, and usage priorities to find the perfect TV.

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