Description
What the Vizio VFD40M-08 is
This is a 40 inch class television at 1920 by 1080, which is Full HD rather than 4K. Vizio positions it as a smaller room set and it ranks second in Amazon’s LED and LCD TVs category, which is unusually high visibility.
The specification that stands out is the backlight. Vizio states a full array LED backlight, meaning the LEDs are distributed across the whole panel rather than arranged along one or two edges. That is not common at this size and price. Edge lighting produces uneven brightness across the screen and visible clouding in dark scenes; a full array arrangement lights the panel evenly. Note that full array is not the same as full array with local dimming, and no dimming zones are claimed here.
Vizio also names Active Pixel Tuning, which it describes as fine tuning contrast and color at a granular level. No detail is given about how it works, so treat it as image processing rather than a hardware capability.
Published dimensions are 8.81 by 35.13 by 22.26 inches and the weight is 18.9 pounds. The design is Vizio’s three sided ThinFrame, meaning narrow bezels on the top and both sides with a wider chin at the bottom.
HDR10, gaming and Bluetooth audio
HDR10 support is listed, specifically over HDMI. On a 1080p set that is a more limited feature than it sounds: HDR is about brightness range and color volume rather than resolution, so the set can accept and display an HDR10 signal, but without a published brightness figure or any local dimming there is no basis for saying how much of the HDR range it can actually reproduce.
The gaming feature is more concrete. Vizio states that when a console or PC is detected, the set automatically enables Auto Low Latency Mode. That switches the television into its lowest input lag configuration without the user finding a menu, and it is a genuinely useful automation on a set likely to be used with a console in a bedroom or a dorm.
Bluetooth headphone support is the other feature worth calling out. Sending audio to headphones from the television itself, without a separate transmitter, is exactly what a small room set needs for late night viewing, and it is not standard at this level.
VIZIO OS and the account requirement
The platform is VIZIO OS with apps built in, a customizable home screen and WatchFree+, Vizio’s free ad supported service offering live channels and on demand titles. Google Cast is built in, so content can be sent from a phone or laptop, and Alexa compatibility is listed.
One requirement deserves emphasis because Vizio states it plainly and buyers frequently miss it: a VIZIO account is required for smart TV functionality and product updates. That is not optional. Without an account the set works as a display with inputs, and the apps, the free channels and the firmware updates do not.
Whether that matters is a personal judgment. It does mean a household that wants a screen without registering anything should plan on using an external player from the streaming media players category rather than the built in platform.
One clear data fault
The voltage field on this listing reads 2.2E+2 volts AC, which is 220 volts written in scientific notation. A television sold for the North American market runs on a nominal 120 volt supply. This is a data entry fault rather than a warning about the appliance, and nothing about this set requires a special outlet.
Beyond that, the usual gaps apply. No refresh rate is published and no motion rate figure appears. No peak brightness, contrast ratio or audio wattage is given. DTS Virtual:X is named in the product title as a virtual surround processing mode but is not described anywhere in the body of the listing, and no HDMI port count is stated.
Why 1080p at 40 inches is a reasonable choice
Resolution only matters relative to viewing distance. At 40 inches and a typical seating distance of eight feet or more, the difference between 1080p and 4K is close to invisible to most eyes, because the individual pixels of a 1080p panel are already too small to resolve at that range. Buying 4K at this size buys pixels that will not be seen.
What does show at any distance is contrast, backlight uniformity and color, which is why a full array backlight on a 1080p set is a more useful specification than 4K resolution on an edge lit one. The situation reverses on a large screen viewed close up, where resolution becomes the limiting factor. For a bedroom or a kitchen set at 40 inches, Full HD is a sensible allocation of money rather than a compromise.
Highlights
- 40 inch class LCD at 1920 by 1080 with a full array LED backlight.
- HDR10 support over HDMI.
- Auto Low Latency Mode engages automatically when a console or PC is detected.
- VIZIO OS with WatchFree+ free live channels and on demand titles.
- Google Cast built in and Alexa compatibility.
- Bluetooth headphone support without extra hardware.
- Three sided ThinFrame design with narrow bezels.
- Light at 18.9 pounds.
Things To Consider
- A VIZIO account is required for smart functionality and firmware updates. Vizio states this directly.
- The voltage field reads 220 volts, which is a data fault. This runs on a standard 120 volt supply.
- This is 1080p, not 4K.
- No refresh rate is published anywhere.
- Full array backlight is not the same as local dimming, and no dimming zones are claimed.
- No peak brightness or contrast figure, so HDR10 performance cannot be judged.
- No HDMI port count and no audio wattage are published.
- DTS Virtual:X appears in the title but is not described anywhere in the listing.
Who it suits
This is a well specified small room television: a bedroom, a dorm, a kitchen or an office where 40 inches is the right size. The full array backlight is a genuine step above what most sets at this size offer, Bluetooth headphones and automatic low latency mode are both features that suit exactly this use, and the free channel service means it is usable without any subscription.
It is not a main living room set and it is not for anyone unwilling to create an account. Buyers comparing similar Vizio models should read the Vizio 40 inch V-Series and the larger Vizio 43 inch FHD, while those wanting a smaller screen should look at the Vizio D32f-F1. Anyone weighing a different platform at the same size should compare the Hisense 40H4030F4 with Roku TV, and the full range sits in the LED and LCD TVs category.
