BenQ TH575i
A bright, gaming friendly 1080p projector for living rooms, with Google TV in the box. A good pick if you can live with replacing a lamp.
Amazon $649$649
The BenQ TH575i is the better projector overall, rated 4.6 to 3.8. The BenQ TH575i leads on streaming, warranty and setup. The Optoma HD146X costs $50 less ($599 vs $649).
Optoma HD146X
A plain, bright 1080p projector for gamers and movie watchers who already own a streaming stick. Simple and responsive, but setup is all manual.
Amazon $599$599
Prices were last checked October 29, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the BenQ TH575i for streaming (Google TV with licensed Netflix vs no built-in apps; needs a streaming stick), warranty (3-year warranty vs 1-year warranty) and setup (Auto keystone, 1.1x zoom vs 1.1x zoom).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1080p and under projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | BenQ TH575i | Optoma HD146X |
|---|---|---|
| Overall rating | 4.6/5 | 3.8/5 |
| Brightness 25% | 100 3,800 ANSI lumens | 100 3,600 ANSI lumens |
| Value 15% | 98 $0.17 per lumen | 98 $0.17 per lumen |
| Resolution 10% | 100 1920 x 1080 native | 100 1920 x 1080 native |
| Streaming 15% | 100 Google TV with licensed Netflix | 0 no built-in apps; needs a streaming stick |
| Setup 10% | 50 Auto keystone, 1.1x zoom | 20 1.1x zoom |
| Light life 10% | 69 15,000 hour lamp | 69 15,000 hour lamp |
| Gaming 10% | 79 16.7 ms input lag | 81 16 ms input lag |
| Warranty 5% | 100 3-year warranty | 0 1-year warranty |
Specifications
| BenQ TH575i | Optoma HD146X | |
|---|---|---|
| Picture | ||
| Brightness | 3,800 ANSI | 3,600 ANSI |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 1080p | 1080p |
| Display | DLP | DLP |
| Light source | lamp | lamp |
| Light source life | 15,000 hours | 15,000 hours |
| Color gamut | 88% Rec.709 | - |
| Native contrast | 15,000:1 | 25,000:1 |
| Placement | ||
| Throw | Standard throw (1.5:1) | Standard throw (1.5:1) |
| Largest image | 300 in | 301 in |
| Autofocus | No | No |
| Auto keystone | Yes | No |
| Obstacle avoidance | No | No |
| Auto screen fit | No | No |
| Optical zoom | 1.1x | 1.1x |
| Streaming and gaming | ||
| Built-in apps | Google TV, licensed Netflix | None |
| Input lag | 16.7 ms | 16 ms |
| Top refresh rate | 120 Hz | - |
| HDMI ports | 1 | 1 |
| eARC | No | No |
| Speakers | 10 W | 5 W |
| Build | ||
| Battery | None | None |
| Fan noise | 34 dB | 28 dB |
| Power | 295 W | 295 W |
| Dimensions | 11.7 x 9.3 x 4.7 in | 12.44 x 9.61 x 4.25 in |
| Weight | 5.1 lb | 6.2 lb |
| Warranty | 3 years | 1 years |
| Released | 2026-07 | 2020-02 |