Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – vs VIZIO 40-inch D-Series Full HD 1080p Smart TV with
Updated August 2026 — Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – wins on picture quality and audio quality, VIZIO 40-inch D-Series Full HD 1080p Smart TV with wins on value for money and gaming performan.
The Roku Smart TV offers superior picture quality and advanced features, while the VIZIO D-Series is a budget-friendly option with decent performance.
Why Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – is better
Picture Quality
Roku offers 4K resolution and Dolby Vision.
Smart Features
Roku has over 500 channels and voice control.
Audio Quality
Roku features Dolby Atmos and a built-in subwoofer.
Why VIZIO 40-inch D-Series Full HD 1080p Smart TV with is better
Price
VIZIO is significantly cheaper at $188.98.
Gaming Performance
VIZIO has a V-Gaming Engine for optimized gameplay.
Size
VIZIO is more compact for smaller spaces.
Overall score
Specifications
| Spec | Roku Smart TV – 75-Inch Plus Series, Mini-LED TV – | VIZIO 40-inch D-Series Full HD 1080p Smart TV with |
|---|---|---|
| Screen Type | QLED | LED |
| Backlight | Mini-LED | Full Array |
| Voice Control | Yes | Limited |
| Streaming | Extensive | Moderate |
| Dolby Atmos | Yes | Pass-through |
Dimension comparison
Price Comparison
The Roku Smart TV is priced at $679.99, while the VIZIO 40-inch D-Series is significantly lower at $188.98. This makes the VIZIO model about 72% cheaper than the Roku option, which might appeal to budget-conscious consumers. The price difference is considerable, especially for those who are looking for a basic smart TV experience without the bells and whistles of higher-end features. The Roku, with its advanced specifications, commands a higher price, while the VIZIO focuses on delivering essential functions at a fraction of the cost.
Picture Quality
When it comes to picture quality, the Roku Smart TV offers a superior experience with its Mini-LED backlighting and QLED technology, providing breathtaking detail in 4K resolution. This is a significant upgrade over the VIZIO’s 1080p Full HD resolution, which, while crisp, does not match the depth and color vibrancy of 4K. The Roku’s Dolby Vision technology enhances color accuracy and contrast, making it ideal for viewers who prioritize visual performance. The VIZIO, while it features a Full Array LED backlight for improved picture uniformity, simply cannot compete with the higher resolution and advanced features of the Roku Smart TV.
Smart Features
The Roku Smart TV excels in its smart features, boasting access to over 500 TV channels and a user-friendly interface that allows for easy navigation and app launching. Its enhanced voice remote further simplifies the experience, enabling users to search across thousands of apps using their voice. In contrast, the VIZIO Smart TV offers a solid smart platform through SmartCast, featuring access to popular streaming services like Netflix and Disney+. However, it lacks the extensive channel options and the voice control capabilities found in the Roku model, making the latter a better choice for those who seek a comprehensive smart TV experience.
Streaming Capabilities
In terms of streaming capabilities, the Roku Smart TV is a leader, providing seamless access to a wide array of free entertainment options and live TV content. With its automatic software updates, users can expect an ever-evolving selection of apps and features. On the other hand, the VIZIO D-Series also supports robust streaming through its SmartCast platform, which includes Apple AirPlay and Chromecast built-in. While both TVs cater to streaming needs, the Roku’s more extensive library and better integration with voice assistants give it an edge for users who prioritize streaming versatility.
Gaming Performance
The VIZIO 40-inch D-Series has a distinct advantage for gamers due to its V-Gaming Engine, which optimizes picture modes for gaming and offers features like Variable Refresh Rate with AMD FreeSync. This makes it particularly appealing to gamers looking for responsive gameplay and low input lag. Meanwhile, the Roku Smart TV does not specifically highlight gaming features, which could be a limitation for gaming enthusiasts. If gaming is a priority, the VIZIO D-Series likely offers a better experience tailored to that audience.
Design and Aesthetics
In terms of design, the Roku Smart TV presents a modern aesthetic with a sleek frame that enhances the viewing experience. Its large 75-inch screen makes it a grand centerpiece for any entertainment setup. The VIZIO 40-inch model, while compact and practical, may not have the same visual impact, especially in larger living spaces. The size difference is notable, with the Roku being more suitable for expansive areas or dedicated home theaters, whereas the VIZIO can fit comfortably in smaller rooms or apartments.
Audio Quality
Audio quality is another area where the Roku Smart TV shines. It features Dolby Atmos technology, which enhances sound clarity and provides a more cinematic audio experience. This is complemented by a built-in subwoofer that adds depth to the sound. The VIZIO D-Series, while it does offer immersive audio pass-through for Dolby Atmos and DTS:X, does not have the same dedicated audio enhancements, potentially leading to a less impactful sound experience. For viewers who prioritize audio quality alongside visuals, the Roku Smart TV is the clear winner.
Which should you buy?
Choosing between the Roku Smart TV and the VIZIO 40-inch D-Series ultimately depends on your specific needs and budget. If you are looking for a premium viewing experience with 4K resolution, extensive smart features, and superior audio quality, the Roku Smart TV is worth the investment at $679.99. However, if budget is your primary concern and you seek a reliable, compact smart TV for everyday use or gaming, the VIZIO D-Series at $188.98 presents an attractive option. Assessing your priorities in terms of picture quality, gaming performance, and smart capabilities will guide you to the right choice for your home entertainment setup.

