BenQ TH575i: Specs, Throw Distance & Alternatives
A bright 1080p DLP lamp projector with a Google TV dongle included. BenQ rates it at 3,800 ANSI lumens and 16.7 ms input lag at 1080p/60. Its HDMI ports are version 1.4a, and it has no lens shift listed.
Is the BenQ TH575i right for you?
Good for
- Rooms with some light: 3,800 ANSI lumens rated
- Console gaming at 1080p/60: a Game picture mode and 16.7 ms claimed by BenQ
- Streaming through the included Google TV dongle
- A 10 W built-in speaker, and light for a lamp projector at 5.1 lb (BenQ)
What to plan for
- HDMI 1.4a: no ARC or eARC is listed
- No lens shift listed and a fixed 108% offset, so the mount or table height has to be right
- Keystone correction is vertical only (auto, ±40°)
- Streaming runs on the dongle; native Netflix is not confirmed
- Lamp rated for 6,000 hours in Normal mode (10,000 in Eco, 15,000 in LampSave)
Based on manufacturer specifications and published reviews (sources below). We don't do hands-on testing.
BenQ TH575i specs
| Resolution | 1080p (1920 × 1080 native DLP; no 4K) |
|---|---|
| Brightness | 3,800 ANSI lumens (BenQ rating) |
| Display technology | DLP |
| Light source | Lamp (203 W) |
| Lamp life (Normal mode) | 6,000 hours |
| Contrast ratio | 15,000:1 (BenQ rating, full on/full off) |
| Throw ratio | 1.49-1.64:1 |
| Lens shift | None listed (fixed 108% offset) |
| Max refresh rate | 120 Hz |
| HDMI ports | HDMI 1.4a (BenQ and ProjectorCentral differ on the port count) |
| Speakers | 10 W |
| Weight | 5.1 lb |
How far from the screen?
Lens-to-screen distance for a 16:9 image, calculated from its 1.49-1.64:1 throw ratio. The zoom lets you place it anywhere in the range.
| Screen | Closest | Farthest |
|---|---|---|
| 80″ | 8' 8" | 9' 6" |
| 100″ | 10' 10" | 11' 11" |
| 120″ | 13' 0" | 14' 4" |
| 150″ | 16' 3" | 17' 10" |
BenQ TH575i input lag by mode
| Signal | Input lag |
|---|---|
| 1080p / 60 Hz | 16.7 ms |
Source: BenQ’s own published claim; we found no independent measurement. Its fastest figure (16.7 ms at 1080p / 60 Hz) is quicker than 43 of the 96 projectors with a lag figure in our input lag database, which lists each model's fastest mode.
BenQ TH575i alternatives at a similar price
In-stock 1080p projectors priced closest to it on Amazon today.
| Model | Price today | Amazon rating | Compare |
|---|---|---|---|
| BenQ TH575i (this one) | $649 | — | — |
| ViewSonic PA503HD 4000 Lumens High Brightness Projector with | $640 | 4.1★ | — |
| Optoma HD30LV 1080p Full HD Home Projector | $629 | 4.3★ | — |
| Optoma HD146X 1080P Full HD Vibrant Home Theater Projector | $599 | 4.3★ | — |
| Optoma EH401 Compact Standard Throw Professional Projector | $699 | 5.0★ | — |
Where it fits
BenQ TH575i FAQ
- How far from the screen should the BenQ TH575i be for a 100-inch image?
- Between 10' 10" and 11' 11" from lens to screen, depending on the zoom setting (throw ratio 1.49-1.64:1).
- What is the input lag of the BenQ TH575i?
- 1080p / 60 Hz: 16.7 ms. Source: BenQ’s own published claim; we found no independent measurement.
- Does the BenQ TH575i have lens shift?
- BenQ lists no lens shift, only a fixed 108% offset and a 1.1x zoom, so the image position is set by where the projector sits.
Sources
Price, stock and rating come from Amazon and update automatically (last checked Nov 15, 2026, 12:00 AM).
Disclosure: As an Amazon Associate we earn from qualifying purchases. We also participate in the eBay Partner Network. We may earn a commission when you click through an affiliate link and make a purchase, at no extra cost to you. Prices and availability shown are accurate as of the time posted but are subject to change. Any price and availability information displayed at the time of purchase will apply.