HDX vs UHD: Side by Side Comparison

There’s nothing more irritating when you’re appreciating HD than when the background begins moving when it shouldn’t. We know all around very well what pressure antiques resemble, and the absence of relics is one of the numerous reasons why we simply love to watch Blu-ray motion pictures.

But for VUDU, with regards to home entertainment, the image quality isn’t all that matters. Among the excess obstructions to acknowledgment over Blu-ray is the way that despite the fact that the films are encoded with Dolby Digital Plus, the case is just fit for allowing you to appreciate antiquated Dolby Digital – in any case, a long ways from TrueHD or DTS-HD. Notwithstanding, dissimilar to the 1080p HD downloads effectively accessible on the case, HDX 1080p fundamentally increase the bitrate, offering extensively better picture quality.

The universe of the presentation is plentiful with new innovations. Every progression makes the more established one a relic of days gone by. With each new innovation, another name is added to the rundown. HDX and UHD are among a significant number of these headways. While we utilize the terms conversely, there is an exacting distinction between every one of them.

Comparison Table: HDX vs UHD

Parameter Of ComparisonHDXUHD
DefinitionHDX stands for High Definition Extra.UHD stands for Ultra High Definition.
Horizontal LinesMore than 720 horizontal lines.More than 1080 horizontal lines.
Resolution OfferedOffers a resolution of 1080 pixels.Offers a resolution of 3480 pixels.
Visual and Audio QualityIt offers better video and audio quality than HD.It offers the best video and audio quality.
Memory SizeMore than 1 Gigabyte.More than 32 Gigabytes.


HDX is a hi-definition (HD) format created by Vudu that permits real-time video at a preferred quality over HD streams from different suppliers like Amazon Instant Video, Google Play, and iTunes. It is fundamentally an improvement of HD innovation.

It represents High Definition Extra. Moreover, it offers 720 horizontal lines’ presentation. It has a 1080 pixel resolution and a memory of more than 1 GB. The video is encoded at double the rate of the HD bit rate. Vudu refers to 1080p HD video as HDX.


  • They’re inexpensive.
  • The same clever features come with multiple HDX TVs.
  • 720p or 1080p is the rest of the content.
  • It’s not nearly the same leap from 480p to 1080p as going from 480p to 2160p (4K).


  • Not future proof
  • Overall quality is beyond comparison
  • Sound quality cannot be also compared.

Checkout the Best HDX TVs in 2021.

VIZIO 32-inch 1080p Smart FHD TV


  • Good picture quality
  • Sleek, attractive design
  • Inexpensive


  • Doesn’t get very bright

TCL 40-inch 1080p Roku TV


  • Roku smart platform
  • Decent black levels.
  • Exellent Picture Quality


  • 720p resolution


Ultra-high-definition (UHD) is a hybrid television display format, also abbreviated to UHD, in which the horizontal screen size is 4000 pixels (4K UHD) or 8000 pixels (8K UHD). The 4K UHD display uses 3840 pixels, and the 4K UHD screen uses 2160 vertical pixels, for 8294 400 or 83 megapixels in total.

The display on an 8K UHD screen has a total of 7680 and a vertical of 4320 pixels, with 33,177,600 pixels or 33.2 megapixels.

Vudu likewise offers a UHD — otherwise known as Ultra HD or 4k an arrangement that offers far better video quality, a lot higher resolution (to the request for 4,000 pixels), Dolby Vision (fundamentally Dolby’s rendition of HDR), and business theater grade Dolby Atmos encompass sound.


  • And when you are watching movies on a big screen, the picture resolution on this UHD TV is perfectly sharp.
  • Even when entering the screen, no pixelation effect prevents intraocular pressure, sore eyes, eye protection, rather than traditional TVs.
  • Increase the extensibility of content from TV networks to Blu-ray.
  • The change between scenes, on-screen gestures, or blockbusters while viewing action movies is very seamless.


  • Expensive price
  • Lack of content options
  • Size is too big

Checkout the Best UHD TVs in 2021.

LG C1 OLED Series


  • Beautiful 4K/HDR picture
  • Four HDMI 2.1 ports
  • WebOS is fantastic


  • Reflective glass surface 
  • No HDR10+

TCL 6-Series QLED


  • Outstanding contrast ratio.
  • Excellent peak brightness.
  • Easy-to-use Roku interface.
  • Displays wide color gamut for HDR content.


  • Narrow viewing angles.
  • Uniformity issues.

 Samsung Q80T QLED TV


  • Excellent response time.
  • Great contrast ratio.
  • Remarkable reflection handling.
  • Support for HDMI 2.1
  • Tizen smart TV platform
  • Good price for what is offered


  • The corners of the screen appear darker.
  • No One Connect Box

How I differentiated the TVs

Color Accuracy

Color accuracy refers to the TV’s ability to view the signal sent through the source device with the same color colors or gray shades. When evaluating the color level of TVs, we compute the white balance dE, color dE, and gamma.

While UHD TVs have improved drastically over the years, people have always asked what 4K LED UHD TVs were without. I don’t believe the colors had OLED TVs or prior plasma TVs’ depth and accuracy.

On the other hand, HDX TVs use Color Gradient Processing, an algorithmic methodology for tuning the image — which may have been encoded for more established CRT TVs — for best outcomes on present-day LCD and plasma TV shows.


The absolute brightness of a TV is the highest volume of light. Higher pinnacle luminosity causes the TV to mirror the picture, to render it more visible in an environment packed with light or tiny highlights (which in HDR’s case is essential).

UHD TVs reach endless luminosity and white max. Indeed, in the event that you need a very brilliant TV to watch toward the beginning of the day, a UHD TV is your most ideal alternative. HDX can’t go up against it.


Not all scenes in a film contain a similar degree of detail, activity, or movement. HDX encodes video at a higher bitrate (double that of the HD variant) – on normal around 9.5 Mbps, and as high as 20 Mbps for scenes with an elevated level of detail and high movement/quick activity sections of the film.

More slow groupings use bit rates as low as 2 Mbit/s. This cycle of utilizing variable piece rates considers the most noteworthy conceivable video quality real-time over a broadband Internet association.

On the opposite, UHD utilizes a higher bitrate — as high as 53–68 Mbps for complex scenes. 44–56 Mbps is utilized for the scenes with lower bit rates.


Sharpness implies edge improvement regarding TVs. The sharpness audit presents something on practically all TVs called the “edge upgrade.” The boundaries of the picture are fortified, principally with a meager bend or layout. New UHD TVs are about phenomenal lucidity.

It relies upon how great the TVs change a 1080p sign to a 4K goal. This is basic since the substance accessible in UHD TVs in this local goal is insignificant or almost nonexistent.

HDX as of now utilizes a 1080p sign as a large portion of the TV upholds that. Nonetheless, it’s not even close to the lucidity level of UDH TVs. Truly the crowd gets ruined whenever they have encountered the sharpness of UHD.


High Dynamic Range, or “HDR,” is a vital component of numerous new 4K UHD TVs. Basically, HDR alludes to the more prominent reach between the most splendid and haziest pieces of a scene. While some compare this to splendor, HDR is about differentiation.

The other significant segment of Better Pixels is Wide Color Gamut (WCG). This widens the scope of tones that a 4K UHD TV can show alongside a more profound immersion of the individual tones. Indeed, even everything HDX TV sets can’t manage that. Utilize those guides to effectively portray what these specialized terms mean and the advantages they bring.

Notwithstanding a more extensive shading extent, numerous HDR sets additionally offer more shades of shading. A 4K HDR set with a 10-cycle tone can show more than 1 billion shades. Contrast that with a standard 20-piece set like HDX. This outcome in smoother progress of shading, for example, in a blue sky, for a substantially more reasonable picture.

HDX utilizes TruFilm, a bunch of Vudu’s exclusive video encoding procedures that utilization the H.264 standard however upgrades for abstract video quality and limiting pressure antiques.

Specific sorts of scenes — e.g., dull skies, water bodies, quick activity — are more inclined to pixelation and pressure artifacts. HDX utilizes calculations to identify such scenes and re-encode them so the video quality that people see is higher.

Download Speed

The greatest weakness of HDX is the measure of time it takes to download a full-length film if downloading it instead of streaming. For real-time, a quick broadband Internet association is needed, with a data transfer capacity of over 4.5mbps for HDX, and over 2.25mbps for standard HD.

For standard definition (SD) streaming you’ll require on normal 2-3Mbps, for HDX 5-8Mbps, and for 4K UHD you’ll require 25Mbps at least, however, we prescribe an association of 50Mbps to cover all situations (live 4K transmissions require more speed, for instance).

Device Capability

While associating a 4K UHD streaming gadget or player, verify that any sound stuff in the sign way has the most recent variants of HDMI and HDCP. At the point when utilized in a home setting, 4K/UHD implies the TV’s screen has a base goal of 3,840 pixels wide and 2,160 pixels high, making it equal to two 1080p screens in tallness and two long.

On the off chance that your TV is just fit for 720p, or on the off chance that the presentation can’t deal with 24 edges for every second, at that point, you won’t see any distinction in quality between the HDX and HD variants of a similar video. On the off chance that your showcase can’t acknowledge 1080p/24 by any means, you may need to pick the 1080i yield all things considered.

The Bottom Line

A few clients have revealed that there is no recognizable distinction in the video nature of UHD versus HDX on Vudu streams. Nonetheless, that is on the grounds that not all gadgets are equipped for streaming Vudu’s UHD content.

4K, or 4K Ultra HD, is a video goal innovation that gives an image four-fold the number of pixels as 1080p HDX goal. The expanded number of pixels makes a more honed, more definite, and more similar survey insight.

Anyway, would it be a good idea for you to move up to 4K, or keep the HDX? Indeed, we’d need to find out about you fully, yet we’re trusting that by perusing the data above, it encourages you to go to a choice.

Your outlook and the profundity of your wallet are everything in a choice like this. There are real advantages and disadvantages in both cases. In the event that you totally need a TV at the present time and you’re on a flat out a financial plan, at that point you’re in an ideal situation going with a less expensive HDX TV set and putting something aside for a superior UHD TV later.

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