Samsung QLED Q70B vs. LG OLED B4: A Comprehensive Comparison

In the mid-range 4K television market, the Samsung QLED Q70B (2022) and the LG OLED B4 (2024) are two compelling options that showcase the strengths of their respective display technologies. The Q70B is an entry-level QLED TV leveraging quantum dot technology for vibrant colors, while the B4 is LG’s budget-friendly OLED, offering perfect blacks and infinite contrast. This article compares their picture quality, performance, cost, and target audience to determine the winner and who each TV best serves, drawing on insights from industry reviews where relevant.

Understanding the Technologies: QLED vs. OLED

• Samsung QLED Q70B (LCD-based QLED): The Q70B uses quantum dot technology with an edge-lit LED backlight to enhance color vibrancy and brightness. Its VA panel delivers strong contrast, and it’s powered by Samsung’s Quantum Processor 4K for upscaling and motion handling. As an entry-level QLED, it balances affordability with gaming-friendly features.
• LG OLED B4 (OLED): The B4 employs LG’s OLED technology, where each pixel is self-emissive, providing perfect black levels and infinite contrast. Powered by the α8 AI Processor, it offers solid image processing and gaming capabilities, though it lacks the brightness-boosting Micro Lens Array (MLA) found in LG’s higher-end C4 and G4 models. It’s a cost-effective entry into OLED performance.

These technologies—QLED’s brightness and durability versus OLED’s contrast and viewing angles—drive significant differences in performance and ideal use cases.

Picture Quality Comparison

Contrast and Black Levels

• LG OLED B4: The B4’s OLED panel delivers perfect black levels and an infinite contrast ratio, as each pixel can turn off completely, eliminating light bleed. This produces exceptional depth in dark scenes, making it ideal for cinematic viewing in dark rooms, such as for movies like Oppenheimer or The Batman.
• Samsung QLED Q70B: The Q70B’s VA panel offers a good contrast ratio (around 6,800:1) with deeper blacks than IPS-based LEDs. Its edge-lit backlight lacks full-array local dimming, leading to minor light bleed and less precise contrast compared to OLED or higher-end QLEDs like the Q80B.

Winner: LG B4 for its perfect blacks and infinite contrast, ideal for dark-room cinematic experiences.

Brightness

• Samsung QLED Q70B: The Q70B achieves higher peak brightness (around 500–600 nits in HDR, 571 nits in real scenes per reviews), making it better suited for bright rooms with ambient light or sunlight. Its anti-reflective coating helps combat glare effectively.
• LG OLED B4: The B4 reaches around 600–700 nits in HDR, improved over its predecessor (B3) but not as bright as LG’s C4 or G4 with MLA. Its excellent reflection handling makes it viable in moderately lit rooms, but it falls short of the Q70B in very bright environments.

Winner: Samsung Q70B for its brighter display, better for well-lit rooms.

Color Performance

• LG OLED B4: The B4 offers a wide color gamut (near 90–95% DCI-P3) with excellent color accuracy and supports Dolby Vision, which uses dynamic metadata for enhanced HDR performance. Its self-emissive pixels ensure vibrant, lifelike colors with smooth gradients.
• Samsung QLED Q70B: The Q70B’s quantum dot technology also delivers a wide color gamut (around 90% DCI-P3) with vibrant colors, supporting HDR10+ but not Dolby Vision. Its colors are vivid but slightly less accurate out of the box compared to the B4.

Winner: LG B4 for its superior color accuracy and Dolby Vision support, enhancing HDR content.

Viewing Angles

• LG OLED B4: OLEDs are renowned for wide viewing angles, maintaining consistent color and contrast even at extreme angles, making the B4 ideal for group viewing or rooms with spread-out seating.
• Samsung QLED Q70B: The Q70B’s VA panel has narrower viewing angles, with colors and contrast degrading when viewed off-axis, making it better suited for straight-on viewing.

Winner: LG B4 for its wide viewing angles, perfect for multi-person setups.

Motion Handling and Gaming

• LG OLED B4: The B4’s near-instantaneous response time (under 1ms) eliminates motion blur, excelling for fast-paced sports and gaming. It supports 4K/120Hz, VRR, ALLM, and G-Sync/FreeSync across two HDMI 2.1 ports, with low input lag (~9ms). It lacks the 4K/144Hz of higher-end LG models but is solid for console gaming.
• Samsung QLED Q70B: The Q70B has a slower response time (~10–12ms), leading to slight motion blur. It supports 4K/120Hz, VRR, ALLM, and FreeSync via one HDMI 2.1 port, with a Samsung Gaming Hub for cloud gaming (e.g., Xbox Game Pass). It lacks G-Sync and has fewer HDMI 2.1 ports.

Winner: LG B4 for its superior motion handling and gaming features, ideal for casual and competitive gamers.

Burn-In Risk

• LG OLED B4: OLEDs carry a risk of burn-in with prolonged static content (e.g., game HUDs, news tickers). LG’s anti-burn-in features (pixel shifting, screen savers) mitigate this, but it remains a concern for heavy static content users.
• Samsung QLED Q70B: As an LCD-based TV, it’s immune to burn-in, making it safer for static content like news channels or PC monitors.

Winner: Samsung Q70B for its burn-in immunity, appealing to users with static content needs.

Cost Comparison

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

• Samsung QLED Q70B (55”): Retails around $700–$900, often discounted as a 2022 model. Its affordability makes it a strong value option for a QLED TV.
• LG OLED B4 (55”): Priced higher, around $1,200–$1,500, reflecting its OLED technology and 2024 release. Price drops during sales make it more accessible, but it remains costlier.

Winner: Samsung Q70B for its lower cost, offering excellent value for budget-conscious buyers.

Additional Considerations

Smart Features and Software

• LG OLED B4: Runs on webOS 24, a user-friendly platform with Quick Cards for app navigation, supporting AirPlay 2, HomeKit, and cloud gaming apps. The Magic Remote enhances usability.
• Samsung QLED Q70B: Uses Tizen OS, a sleek platform with Samsung TV Plus and a Gaming Hub for cloud gaming. Its Solar Cell remote is eco-friendly and intuitive.

Winner: Tie. Both platforms are excellent, with webOS offering better smart home integration and Tizen excelling in gaming features.

Sound Quality

• LG OLED B4: Features Dolby Atmos and 2.2-channel speakers (20–40W), with AI Sound Pro for virtual surround sound. It delivers clear audio but benefits from a soundbar for immersion.
• Samsung QLED Q70B: Includes Object Tracking Sound Lite and 2.0-channel speakers (20W), offering decent audio but less depth than Atmos. A soundbar is recommended.

Winner: LG B4 for its Atmos support, though both benefit from external audio.

Durability and Longevity

• LG OLED B4: OLED panels may degrade over time, potentially reducing brightness after years of heavy use. Burn-in risk, though mitigated, remains a concern.
• Samsung QLED Q70B: LCD panels are more durable, with no burn-in risk and better brightness retention, ideal for heavy use.

Winner: Samsung Q70B for its durability and burn-in immunity.

Final Verdict: Which TV Wins?

The LG OLED B4 is the superior choice for picture quality and versatility, offering perfect blacks, infinite contrast, wide viewing angles, and advanced gaming features (4K/120Hz, Dolby Vision gaming). It’s ideal for movie enthusiasts, casual gamers, and group viewing in darker environments. Its higher price reflects its premium OLED performance, making it worth the investment for those prioritizing cinematic visuals.

The Samsung QLED Q70B excels in bright rooms with its higher brightness and anti-reflective coating, and its burn-in immunity makes it safer for static content (e.g., news, PC use). Its lower price and solid gaming features (4K/120Hz, Gaming Hub) make it a compelling value option.

Target Audience

• LG OLED B4: Ideal for home theater enthusiasts, casual gamers (especially console gamers), and households with group viewing or darker viewing environments. If you prioritize picture quality and Dolby Vision and can afford the premium, the B4 is the choice.
• Samsung QLED Q70B: Best for budget-conscious buyers, those with bright living rooms, or users displaying static content (e.g., news tickers, PC monitors). It’s a cost-effective option for mixed-use scenarios.

The Winner

The LG OLED B4 takes the crown for its unmatched picture quality, gaming performance, and versatility, making it the better choice for most mid-range buyers in 2025 seeking premium visuals. The Samsung Q70B is a strong alternative for bright-room viewing, budget shoppers, or those prioritizing durability, but it falls short of the B4’s cinematic excellence. Choose based on your viewing environment, budget, and usage priorities.

SARABI MAISHA MAGIC PLUS SEASON 1 EPISODE 71