Optoma UHD50X vs BenQ TK850i

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At first glance, it seems like the UDH50X from Optoma and BenQ’s TK850i have nothing in common. One projector is marketed for gamers, while the other is designed for movie lovers. It doesn’t seem like there is much to compare.

Both are 4K projectors capable of producing stunning onscreen pictures, but the UHD50X produces brighter, more dynamic images. It also has an input lag that can keep up with fast-paced action games (>>> Find on Amazon). Don’t forget about the TK850I. It comes with more smart features than the UHD50X.

Comparing the Optoma UHD50X vs the BenQ TK850i you’ll find one model is not necessarily better than the other. It depends on what you want from a 4K projector.

Optoma UHD50X vs BenQ TK850i Specifications:

Optoma UHD50XBenQ TK850i
Contrast Ratio500,000:130,000:1
Brightness (Lumens)3,400 ANSI3,000 ANSI
Input lag25msNo data
Throw Distance4.0' - 26.6'3.2' - 24.6'
Screen size34" - 303"30" - 300"
Internal Speakers5.0 Watts Mono5.0 Watts × 2
PriceFind on Amazon
Find on Amazon

There’s a lot to like about both 4K projectors, but one may be a better fit for your entertainment needs.

Image Quality

Native 4K resolution is standard on the UHD50X and TK850i. The lumens output is also similar, with the UHD50X producing a slightly brighter picture. However, ambient lighting won’t be a problem with either projector.

Contrast and color ratio are what set the two projectors apart. You can’t complain about the Tk850i. It uses a dynamic iris to enhance contrast, and HDR10 plus HLG support further optimize image clarity but you will get better image quality with the UHD50X. It produces brighter, crisper colors with the 8-segmented color wheel. The 500,000:1 contrast ratio gives you deeper blacks and crisper whites compared to TK850i.

Better Image Quality: Optoma UHD50X

Gaming Quality

You can’t compare these home theater projectors when it comes to gaming quality. The UHD50X is built for gamers with a relatively fast latency speed. The BenQ TK850i will only keep casual gamers happy. Both come with a fast 240Hz refresh rate, but with your choice of a 16ms or 25ms input lag, the UHD50X is a better choice.

When you turn on enhanced gaming mode, input lag drops to 16ms. You lose some resolution, but it’s worth it to play your games on the big screen. The 240Hz refresh rate on both projectors also ensures live sports and fast-action movies play smoothly. Both projectors can keep up with the action. Click here for the best options for sports projectors.

Better Gaming Quality: Optoma UHD50X

Ease of Installation and Set-Up

You won’t have a problem installing either model. Both are lightweight and compact, making them easily portable. Both are standard-throw projectors. You need around 9’ for 100” images. If space is limited, these may not be the best options. Digital correction, along with manual focus and zoom make it easy to align images.

The TK850i is a little easier to use, thanks to its built-in smart features. Along with an easy-to-navigate smart TV interface, it also supports Airplay and Chromecast screen mirroring. Add in Google Voice Assistant, and you get one of the easiest projectors to use. All of your favorite streaming apps are ready to go as soon as the projector is installed.

Easier Installation and Set-Up: BenQ TK850i

Optoma UHD50X

Optoma UHD50X

The Optoma UHD50X is a versatile projector. It will keep gamers and movie buffs happy with its stunning image quality and fast latency speed. With 8.3 million pixels, HDR10 and HLG support, and an 8-segmented color wheel you get realistic colors, and images with depth and definition. Dynamic black technology adds to your viewing experience.

A 240Hz refresh rate keeps frames playing smoothly. You don’t have to worry about blurry edges or frozen frames in live sports and action movies. It also keeps your fast-paced games playing smoothly whether or not your using the Enhanced Gaming mode function. Resolution drops to 1080p in gaming mode, but you also get a 16ms latency speed.

Installing the UHD50X is a breeze in larger rooms. It’s a standard-throw projector, you’ll need plenty of space between the lens and screen. Keystone correction, vertical lens shift, and 1.3x zoom make it easy to center images on the screen. It’s almost ready-to-go out of the box. You also get a robust control panel and easy to use onscreen interface.


  • 3840×2160 resolution
  • Dynamic Black technology
  • Enhanced gaming mode
  • Bright images
  • Low input lag


  • The projector is lacking smart features, including voice control

BenQ TK850i

BenQ TK850i

A 3,000 lumens lamp, along with HDR-Pro and HLG support, ensure you get bright, accurate colors across most of the spectrum. The contrast ratio is low, but a dynamic iris lens ensures crisp resolution. Images are detailed, even in ambient lighting.

It’s a lightweight and compact 4K projector. You can easily take it outside for movie night. It’s also incredibly easy to set up. Lens shift and digital keystone correction ensure you can easily align images. You also don’t have to worry about connecting streaming sticks, thanks to its onboard smart features.

The TK850i comes with an easy-to-navigate Android interface. It’s connected to the Google Play store, so you only need to download your favorite apps. You don’t need to connect streaming sticks to access your favorite content. The projector also supports Airplay and Chromecast. You can mirror content from your mobile device onto the screen. Voice control support makes the projector a breeze to use anywhere.


  • Dynamic iris
  • Mirroring support
  • Voice control
  • Google Play access
  • Enhanced Tone Mapping


  • The projector does not support Netflix
  • High input lag


Comparing the Optoma UHD50X vs BenQ TK850i comes down to what you want in a 4K home theater projector. If input lag and image clarity are top concerns, the Optoma UHD50X is the best choice (>>> Check on ProjectorScreen).

Not everyone cares about latency speeds, sometimes smart features are the priority. In this case, you want to look at the BenQ TK850i.

Whichever projector you take home, you will get an immersive picture, along with a fast refresh rate and easy installation. It comes down to what you want from your home cinema projector.