Roku Smart TV – 40-Inch Select Series, 1080p Full vs VIZIO 40-inch D-Series Full HD 1080p Smart TV with
Updated August 2026 — Roku Smart TV – 40-Inch Select Series, 1080p Full wins on price and smart features, VIZIO 40-inch D-Series Full HD 1080p Smart TV with wins on gaming and sound.
The Roku Smart TV offers a more budget-friendly option with a user-friendly interface, while the VIZIO D-Series excels in gaming features and audio performance.
Why Roku Smart TV – 40-Inch Select Series, 1080p Full is better
Price
Roku Smart TV is $169.95, cheaper than VIZIO's $188.98.
User Interface
Roku offers a simpler navigation experience.
Voice Control
Roku supports multiple voice assistants.
Why VIZIO 40-inch D-Series Full HD 1080p Smart TV with is better
Gaming Features
VIZIO has a dedicated V-Gaming Engine.
Audio Quality
VIZIO supports Dolby Atmos and DTS:X.
Picture Technology
VIZIO uses full array LED backlight for better contrast.
Overall score
Specifications
| Spec | Roku Smart TV – 40-Inch Select Series, 1080p Full | VIZIO 40-inch D-Series Full HD 1080p Smart TV with |
|---|---|---|
| Resolution | 1080p | 1080p |
| Voice Control | Yes | Yes |
| Smart TV | Yes | Yes |
| Gaming Mode | No | Yes |
| Audio Support | Basic | Dolby Atmos |
Dimension comparison
Price Comparison
When it comes to price, the Roku Smart TV is significantly more affordable than the VIZIO 40-inch D-Series. The Roku Smart TV is priced at $169.95, making it about 17% cheaper than the VIZIO, which costs $188.98. This price difference may appeal to budget-conscious consumers aiming for a smart TV experience without breaking the bank. Additionally, the Roku Smart TV has a 30-day average price of $132.24, indicating that it often sees discounts, whereas the VIZIO's average price over the same period is $227.54. For those seeking good value, the Roku Smart TV stands out.
Picture Quality
In terms of picture quality, both TVs offer 1080p Full HD resolution, but they take different approaches to enhance the viewing experience. The Roku Smart TV promises a bright and clear picture, optimizing incoming signals for the best output. It features Roku Smart Picture technology which automatically selects the right picture mode. On the other hand, the VIZIO 40-inch D-Series boasts a full array LED backlight that provides superior light uniformity and contrast, delivering a brilliant picture performance. While both TVs are capable of delivering high-definition visuals, the choice may depend on whether you prefer Roku's optimization features or VIZIO's backlight technology.
Smart Features and User Interface
The Roku Smart TV excels in its user-friendly interface and streaming capabilities, making it a strong contender in smart features. With access to over 500 TV channels and a seamless navigation experience, users can easily discover free live television and popular apps. The built-in voice remote adds convenience, allowing for hands-free searching. In contrast, the VIZIO D-Series comes equipped with SmartCast, which provides access to a wide array of streaming services right out of the box. It also features the V-Gaming Engine, optimized for gaming with low input lag, making it a versatile option for gamers. Ultimately, the Roku Smart TV offers a more straightforward streaming experience, while the VIZIO provides additional gaming-focused features.
Voice Control and Smart Home Integration
Both the Roku Smart TV and VIZIO D-Series offer voice control capabilities, but they integrate with different ecosystems. The Roku Smart TV supports voice commands through Roku Voice, Siri, Alexa, and Google Assistant, making it highly compatible with various smart home setups. Meanwhile, the VIZIO D-Series is also compatible with Alexa, Apple AirPlay 2, and Chromecast, allowing users to control their viewing experience through multiple platforms. This makes both TVs suitable for smart home enthusiasts, with the Roku likely being slightly easier to use due to its dedicated voice remote and broad compatibility.
Sound Quality
Sound quality is an essential consideration when choosing a TV, and both the Roku Smart TV and VIZIO D-Series bring unique strengths to the table. The Roku Smart TV is designed for clear speech and louder sound, ensuring that dialogue is easily heard. This feature is particularly beneficial for watching movies or shows where understanding dialogue is crucial. The VIZIO D-Series also emphasizes audio quality with support for immersive audio pass-through for Dolby Atmos and DTS:X, which enhances the experience for movie enthusiasts and gamers alike. If audio clarity is a top priority, the Roku may have the edge, but for those seeking immersive sound experiences, the VIZIO could be more appealing.
Gaming Features
For gamers, the VIZIO D-Series stands out with its dedicated gaming features. The V-Gaming Engine optimizes picture mode for gaming, ensuring a smooth experience with low input lag and variable refresh rates, which are essential for fast-paced gaming. This television also includes an auto game mode, making it easy to switch settings for gaming. Conversely, the Roku Smart TV does not specifically cater to gaming, focusing instead on general entertainment. Therefore, gamers will likely find the VIZIO D-Series to be a more suitable option, especially for next-gen console gameplay.
Design and Aesthetics
In terms of design, both the Roku Smart TV and VIZIO D-Series offer modern aesthetics suitable for various room settings. The Roku Smart TV features a sleek flat-screen design that fits well in bedrooms, kitchens, and living rooms. The VIZIO D-Series is similarly designed with a full array backlight, which not only enhances picture quality but also contributes to a more visually appealing display. While both models are stylish, the choice may come down to personal preference regarding the overall look and feel of the TV in your living space.
Which should you buy?
In conclusion, the choice between the Roku Smart TV and the VIZIO 40-inch D-Series ultimately comes down to your specific needs. If budget is your primary concern, the Roku Smart TV offers a more affordable option with a user-friendly interface and solid performance for general viewing. However, if you are a gamer or prioritize advanced gaming features, the VIZIO D-Series may be the better choice due to its specialized gaming capabilities and immersive audio features. Both TVs have their unique strengths, making either a worthy addition to your home entertainment setup.

