LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV vs Roku Smart TV – 75-Inch Plus Series, Mini-LED TV –
Updated July 2026 — LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV leads on price and gaming.
The LG OLED TV offers superior picture quality and advanced features, making it the better choice for enthusiasts, while the Roku TV provides excellent value for casual viewers.
Why LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV is better
Picture Quality
OLED technology provides perfect blacks and vibrant colors.
Gaming Performance
0.1ms response time and up to 144Hz refresh rate.
Audio Quality
Dolby Atmos technology for immersive sound.
Why Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – is better
Price
Significantly lower price point.
Streaming Options
Access to over 500 streaming channels.
User Interface
Simpler and more intuitive Roku platform.
Overall score
Specifications
| Spec | LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV | Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – |
|---|---|---|
| Screen Size | 77 inches | 75 inches |
| Resolution | 4K | 4K |
| HDR Support | Dolby Vision | Dolby Vision |
| Processor | α9 AI Gen8 | N/A |
| Voice Control | Alexa | Roku Voice |
Dimension comparison
Price Comparison
The LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV is priced at $1,699.99, making it significantly more expensive than the Roku Smart TV, which is priced at $679.99. This represents a price difference of about 150%, with the Roku model being approximately 60% cheaper than the LG model. The price disparity reflects the differences in technology and features offered by both TVs. The LG OLED TV is positioned as a premium product, while the Roku Smart TV caters to consumers looking for a solid performance at a lower price point.
Display Technology
The LG OLED evo features cutting-edge OLED technology, which creates perfect black levels and vibrant colors through self-lit pixels. This technology provides an incredible watching experience, particularly in darker environments. In contrast, the Roku Smart TV utilizes Mini-LED backlighting combined with QLED technology, which enhances brightness and color vibrancy but does not achieve the same level of black depth as OLED. The difference in display technology is crucial, especially for viewers who prioritize picture quality, as the LG's OLED technology is renowned for its superior image reproduction.
Smart Features
When it comes to smart features, both TVs integrate advanced capabilities to enhance user experience. The LG OLED TV runs on the latest webOS 25 platform, which emphasizes ease of use and streaming functionality. It includes voice control capabilities via Alexa, enhancing convenience for users. The Roku Smart TV is built around the Roku platform, which is known for its simplicity and access to a broad range of streaming channels, boasting over 500 options. While both TVs offer robust smart features, the LG model provides a more comprehensive AI-driven experience, while the Roku TV excels in streaming simplicity and accessibility.
Gaming Performance
For gamers, the LG OLED TV stands out with its impressive gaming capabilities. It includes a 0.1ms response time and supports refresh rates up to 144Hz, which is essential for fast-paced gaming. Additionally, the LG model is compatible with NVIDIA G-Sync and AMD FreeSync Premium, ensuring a smooth gaming experience free of tearing or blurring. The Roku Smart TV, while featuring decent capabilities for casual gaming, does not match the performance metrics of the LG, making it less suitable for avid gamers who require top-tier responsiveness and picture quality.
Audio Quality
Audio performance varies significantly between the two models. The LG OLED TV features Dolby Atmos technology, which delivers immersive sound, allowing users to feel surrounded by their content. This is complemented by the TV's ability to produce clear audio that matches its high visual quality. On the other hand, the Roku Smart TV also incorporates Dolby Atmos but emphasizes clarity with its built-in subwoofer, providing a cinematic experience. While both TVs offer enhanced audio experiences, the LG model is likely to appeal more to audiophiles seeking a richer sound profile.
Design and Aesthetics
In terms of design, the LG OLED TV boasts a nearly invisible bezel, allowing it to blend seamlessly into any living space. Its sleek design is complemented by an Art Gallery mode, which can display artwork and photos when not in use. The Roku Smart TV, while also aesthetically pleasing, has a more traditional flat-screen appearance. The LG’s design not only enhances its visual appeal but also positions it as a modern centerpiece for home entertainment, making it ideal for consumers who prioritize aesthetics alongside functionality.
Brand Reputation and Ranking
Brand reputation plays a significant role in consumer choice. LG is well-known for its cutting-edge technology and high-quality products, which is reflected in its bestseller rank of 603. The Roku Smart TV, with a lower bestseller rank of 1,763, caters to a different market segment, focusing on affordability and ease of use. While both brands are reputable, LG's strong position in the OLED market gives it an edge in terms of perceived quality and innovation.
Which should you buy?
In conclusion, the decision between the LG 77-Inch Class OLED evo AI 4K C5 Series Smart TV and the Roku Smart TV comes down to individual needs and budget. If you’re seeking top-tier picture quality, advanced gaming features, and a premium audio experience, the LG model is worth the investment, despite its higher price point. Conversely, if you are looking for an affordable, user-friendly smart TV that covers the essentials for streaming and casual viewing, the Roku Smart TV offers excellent value for money. Ultimately, your choice will depend on whether you prioritize high-end features or budget-friendly options.

