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Optoma HD146X vs Benq TH575: Comparison

By: Jim Reddy | Updated 11.03.2024, 22:37

Hey, Jim's here. When it comes to choosing a projector for your home theater, gaming setup, or even your next big presentation, the decision can be overwhelming.

Two standout options in the market are the Optoma HD146X and the BenQ TH575. Both projectors offer a range of features designed to enhance your viewing experience, but they cater to different needs and preferences.

I'll try to guide you through the options and find the best one for your needs.

Optoma HD146X vs Benq TH575

HD146X vs TH575: At a Glance

At, we respect your time and aim to provide only the essential information, skipping the fluff.

If you're in a hurry, here's the quick rundown: The Optoma HD146X shines with its high contrast ratio and gaming mode, making it ideal for gamers and movie enthusiasts who crave detailed images and vibrant colors. The BenQ TH575, on the other hand, boasts a higher brightness level, making it better suited for environments with ambient light.

Both models fall into roughly the same price range, yet considering all the pros and cons, I'd suggest giving the BenQ TH575 a closer look.

Table of Contents

HD146X vs TH575: Comparison

When comparing the Optoma HD146X vs BenQ TH575, it's essential to look at their specifications side by side to understand their strengths and weaknesses.

Feature Optoma HD146X BenQ TH575
Optoma HD146X
Resolution 1920 x 1080 1920 x 1080
Brightness 3600 Lumens 3800 Lumens
Contrast Ratio 25,000:1 15,000:1
Input lag 16 ms 16 ms
3D Support Yes Yes
Lamp Life (Eco Mode) 15,000 hours 15,000 hours
Connectivity HDMI, USB, Audio Out HDMI, USB, VGA, Audio In/Out
Speakers Yes Yes
Weight 6.2 lbs 7.65 lbs
Dimensions (inch) 9.5 x 12.4 x 4.3 11.65 x 8.7 x 4.72

*April 23, 2024

The Optoma HD146X and BenQ TH575 are competitively matched 1080p projectors in the same price range. Both offer similar brightness over 3,500 lumens and core features like low input lag, 3D support and integrated speakers.

However, the Optoma outperforms the BenQ in a few notable areas according to the specs. It has a much higher 25,000:1 contrast ratio compared to 15,000:1 on the BenQ model. This allows it to produce deeper blacks and more vibrant colors. The Optoma is also smaller and lighter by about 20% - an advantage for portability and setup.

When researching reviews and feedback on forums like Reddit, there are some mixed opinions. While picture quality tends to favor the Optoma, there are some concerns raised about its reliability and quality control failure rate. Potential Optoma buyers may want to budget for an extended warranty or replacement plan.

BenQ TH575 vs Optoma HD146X: Design

Since design is subjective, consider which you like better visually: the BenQ TH575 or the Optoma HD146X.

Design of Optoma HD146X:

Design of BenQ TH575:

As you can tell, their designs are quite similar, with the main difference being the color (black versus white). So, the choice is really up to you.

Optoma HD146X versus BenQ TH575: Reviews

After analyzing numerous online reviews, I've gathered useful insights from users with firsthand experience using the Optoma HD146X and BenQ TH575 projectors, highlighting their pros/cons and personal differences.

Optoma HD146X Reviews

Praises: Using this projector primarily at eye level behind the couch, I found the image projects too high for my desired space, limited by a +/-15° level requirement. Missed features include Bluetooth audio, more zoom range for various screen sizes, and additional input options beyond the single HDMI port. The USB power out port was a letdown, especially when it produced a loud noise with a USB-powered speaker.

Despite these drawbacks, the projector impresses with its brightness and image quality, even on a light gray wall without a proper screen. Its standout feature for me is the 3D capability, delivering outstanding performance with DLP Link 3D glasses purchased from Amazon. It's a game-changer for my viewing experience.


Drawbacks: Encountered setup challenges with my projector due to a misleading throw ratio and limited zoom, requiring ceiling installation for correct image placement. Appreciated the sharp image quality in dark settings, though it struggled in light. A month in, the lamp failed, but Amazon quickly replaced it. Despite enjoying the large screen, the hassle and early failure were drawbacks. My long-term view hinges on its reliability.

BenQ TH575 Reviews

Praises: Upgraded to this BenQ from a 10-year-old Optoma, and the difference is night and day. Despite costing half as much, it's brighter with more vivid colors, even on 'ECO' mode. It's also more compact. The only downside is a noticeable 'screen door effect,' more pronounced than on the Optoma, though adjusting the focus helps. Not high-end, but for the price, it's an incredible value. A significant tech leap over 10 years makes it a smart buy.


Drawbacks: Love this projector for its brightness and clarity, a step up from older BenQ models. However, I've hit a snag: my first unit developed a distracting white spot after 3 weeks, and Amazon replaced it. Now, 1.5 years later, the replacement has the same issue, making movies unwatchable. It's under a 3-year warranty, so I'm about to navigate the warranty process. Will update on how it goes.

I hope you find this information helpful.

Best Alternative Projector Models to HD146X and TH575

Looking for alternatives in battle between HD146X versus TH575? Consider these models:

  1. Epson Home Cinema 2150: Offers wireless connectivity and Full HD resolution, great for movies and top gaming projector.
  2. ViewSonic PX701HD: A strong competitor with a high brightness level and low input lag, suitable for a variety of settings.

These are truly great alternatives to the Benq TH575 and Optoma HD146X.

HD146X vs TH575: What is Difference?

Choosing between the Optoma HD146X and the BenQ TH575 depends on your specific needs.

  • The HD146X is a dream for gamers and cinephiles who prioritize image quality and immersion;
  • The TH575, with its superior brightness, stands out in well-lit environments.

Both projectors have their strengths and weaknesses, with the HD146X catering more to those prioritizing image quality and the TH575 appealing to those needing brightness. Despite some concerns, they represent good value for their price, offering advanced features like low input lag, 3D support, and integrated speakers.

Consider alternative models if you're looking for specific features not covered by these two options.

Go Deeper: