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BenQ TH575i Review for 2026: Bright 1080p Projector for Family Rooms

By Tony Polanco•

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BenQ TH575i 1080p Home Projector, 3800lm High Brightness, Included Licensed Google TV Dongle, 16.7ms Low Input Lag for G

A benq th575i review for family movie nights: 3,800 lumens, 1080p picture, gaming delay, setup features and rival projectors.

A projector for family movie nights, sports and a little gaming needs brightness more than anything else, and the BenQ TH575i is aimed at exactly that. This benq th575i review covers its brightness, gaming delay, setup features and the rivals worth comparing.

It is the current 1080p home model in our hub for the line that older BenQ home projectors like the HT2060 belonged to, and it is the one to read about now that the older model is no longer sold new. The product table lists it first, followed by other projectors.

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BenQ TH671ST 3000 Lumens 1080p Short Throw Home Entertainment Projector | 3000 Lumens Low Input Lag, Auto Vertical Keystone, Dual HDMI, Built-In Speaker, Console Gaming, short throw, 3 year warranty
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What the BenQ TH575i Offers

The listing describes a 1080p home projector with 3,800 lumens of brightness, a 16.7 millisecond input lag for gaming, auto vertical keystone, a 1.1x optical zoom and a sports mode. A licensed Google TV dongle is included, so you can stream without plugging in a separate player, and one listing bundles a ceiling mount.

Native 1080p is a sensible choice at this price. It gives sharp pictures for movies and games on a screen of normal living room size, and it costs far less than a 4K projector.

Benq TH575i Review: Brightness in a Lit Room

Brightness is the main selling point. A projector rated at 3,800 lumens copes with a living room that has lamps on or daylight leaking around curtains, which a dim portable model cannot do. It does not make daytime viewing perfect, but sports and cartoons stay watchable with some light in the room.

Dark rooms still give the best contrast and the richest colors. If you can dim the room for movie night, keep the picture mode on a cinema setting and save the sports mode for game day.

Gaming Delay

A 16.7 millisecond input lag is about one frame at sixty frames per second. That is fine for most console and PC games, including shooters played for fun, although competitive players may prefer a lower delay or a gaming monitor. Switch on the projector's game mode if it has one and turn off extra picture processing on your console.

  • Use a short HDMI cable from the console to reduce signal issues.
  • Pick a picture mode with the lowest delay for games.
  • Keep the screen size modest so the picture stays sharp.

Setup, Throw and Keystone

Auto vertical keystone straightens the picture when the projector sits above or below the middle of the screen, and a 1.1x optical zoom lets you adjust the image size a little without moving it. Both features make life easier for a first-time buyer, because ceiling mounts and shelves are rarely at perfect height.

Measure the distance from the projector to the wall before you buy, and check the listing's throw ratio against your screen size. A standard throw model like this needs a few feet of space between the lens and the wall.

Google TV and Streaming

The included Google TV dongle brings the usual streaming apps to the projector, so you can start a movie without a laptop or a console. Update the dongle after setup, connect it to your WiFi and sign in once. If you prefer a streaming box you already own, the HDMI ports still work in the usual way.

How It Compares With Other Projectors

The table includes shorter-throw BenQ models, 4K home projectors, other 1080p models from Optoma and ViewSonic, and small portable projectors with built-in streaming. 4K models cost much more and bring sharper detail on big screens. Portable models are cheap and handy but are dimmer, so they suit dark rooms and backyard nights better than a bright living room.

When you compare, weigh brightness, input lag, throw distance and total cost of ownership. A cheaper projector is not a bargain if you cannot see it with the lights on.

Who Should Buy It

It suits families who watch movies and sports in a living room that is never fully dark, and gamers who play on a big screen for fun. It also suits anyone replacing an older BenQ home projector who wants a current, supported model with built-in streaming.

It is less compelling for people who want 4K detail, a short throw lens for a small room, or a projector they can carry in a backpack.

Care and Maintenance

Keep the vents clear, let the fan run for a moment after you switch the projector off and clean the filter or dust with a soft cloth. Do not move it while it is still hot, and cover the lens when it is not in use. Good habits keep the picture bright for years.

Choosing a Screen and Placement

The wall works for casual use, but a proper projector screen improves contrast and brightness uniformity, and it lets you pick a size that fits the room. A white or light gray surface suits a room with some light, while a darker gray surface can help in a room where you can control light better. Keep the image level with your eyes when seated, and leave enough space around the screen so the picture does not feel cramped.

Ceiling mounting keeps cables out of sight and the projector out of the way, but plan the power and HDMI runs before you drill. A shelf behind the sofa is easier and still works with keystone correction.

Sound Options

Built-in projector speakers are meant for convenience, not for movies. A soundbar or a pair of powered speakers makes a big difference, and you can connect them through the projector's audio output or straight from your streaming device. If you play games, send the sound to a headset so the room stays quiet for everyone else.

Bulb, Laser or LED

Home projectors use different light sources, and each has trade-offs in brightness, life and price. Lamp models are the cheapest to buy but need a replacement lamp after thousands of hours. Laser and LED models last longer and start faster but cost more up front. Read the listing for the light source and any lamp life figures before you decide, and add the cost of a spare lamp to your budget if the model uses one.

See also: best projector, TK710STi review, X3100i review.

Frequently Asked Questions

Is the TH575i 1080p or 4K?

It is a 1080p projector according to the listing, with 3,800 lumens of brightness.

Does it include a streaming device?

Yes. The listing says a licensed Google TV dongle is included.

Is it good for gaming?

Yes for casual and console gaming, with a 16.7 millisecond input lag listed.

What happened to the HT2060?

The older HT2060 is no longer sold new on Amazon, so this review covers the current model.

Final Verdict

This benq th575i review finds a bright, easy-to-set-up 1080p projector for family rooms and casual gaming. Compare its price and brightness with the other projectors in the table, and pick the one that suits your room.

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