BenQ TK800M: Specs, Throw Distance & Alternatives
A 4K UHD DLP lamp projector aimed at movies and sports rather than gaming. BenQ rates it at 3,000 ANSI lumens and publishes 51 ms input lag at 1080p/60, with no game mode listed. It has no smart TV system, no wireless and no lens shift.
Is the BenQ TK800M right for you?
Good for
- Movies and sports: BenQ lists Cinema, Sport and Football picture modes
- Rooms with some light: 3,000 ANSI lumens rated
- Permanent installs: RS-232, a 12 V trigger and an optional ceiling mount
- A 3.5 mm audio output and a 5 W built-in speaker
What to plan for
- Not a gaming pick: BenQ publishes 51 ms at 1080p/60 and lists no game mode
- No smart TV system or wireless listed: add a streaming stick (the USB-A port supplies 1.5 A of power)
- Only one HDMI port is HDMI 2.0b; the other is HDMI 1.4b
- No lens shift, a 1.1x zoom and manual focus; keystone is vertical only
- Lamp rated for 4,000 hours in Normal mode (up to 15,000 in LampSave)
Based on manufacturer specifications and published reviews (sources below). We don't do hands-on testing.
BenQ TK800M specs
| Resolution | 4K UHD (3840 × 2160, 0.47-inch DLP pixel shift) |
|---|---|
| Brightness | 3,000 ANSI lumens (BenQ rating) |
| Display technology | DLP |
| Light source | Lamp (240 W) |
| Lamp life (Normal mode) | 4,000 hours |
| Contrast ratio | 10,000:1 (BenQ rating, full on/full off) |
| Throw ratio | 1.50-1.65:1 |
| Lens shift | None (fixed 110% offset) |
| Max refresh rate | 60 Hz |
| HDMI ports | 2 (one HDMI 2.0b, one HDMI 1.4b) |
| Speakers | 5 W |
| Weight | 9.2 lb |
How far from the screen?
Lens-to-screen distance for a 16:9 image, calculated from its 1.50-1.65:1 throw ratio. The zoom lets you place it anywhere in the range.
| Screen | Closest | Farthest |
|---|---|---|
| 80″ | 8' 9" | 9' 7" |
| 100″ | 10' 11" | 12' 0" |
| 120″ | 13' 1" | 14' 5" |
| 150″ | 16' 4" | 18' 0" |
BenQ TK800M input lag by mode
| Signal | Input lag |
|---|---|
| 1080p / 60 Hz | 51 ms |
Source: BenQ’s published figure; we found no independent measurement. Its fastest figure (51 ms at 1080p / 60 Hz) is quicker than 4 of the 96 projectors with a lag figure in our input lag database, which lists each model's fastest mode.
BenQ TK800M alternatives at a similar price
In-stock 4K projectors priced closest to it on Amazon today.
| Model | Price today | Amazon rating | Compare |
|---|---|---|---|
| BenQ TK800M (this one) | $1,276 | 4.5★ | — |
| BenQ TK700 4K HDR Gaming Projector | $1,299 | 4.0★ | — |
| Optoma UHD35STX 4K UHD Short Throw Gaming and Home Entertain | $1,299 | 3.2★ | — |
| ViewSonic LX700-4K UHD 3500 Lumens Laser Projector Designed | $1,239 | 4.0★ | — |
| Optoma UHZ36 4K UHD Laser HDR Home Theater Projector - Black | $1,199 | 4.0★ | — |
Where it fits
BenQ TK800M FAQ
- How far from the screen should the BenQ TK800M be for a 100-inch image?
- Between 10' 11" and 12' 0" from lens to screen, depending on the zoom setting (throw ratio 1.50-1.65:1).
- What is the input lag of the BenQ TK800M?
- 1080p / 60 Hz: 51 ms. Source: BenQ’s published figure; we found no independent measurement.
- Is the BenQ TK800M native 4K?
- No. Its resolution is 4K UHD (3840 × 2160, 0.47-inch DLP pixel shift). It builds the 4K image with pixel shifting instead of a native 3840 × 2160 chip or panel.
- Does the BenQ TK800M have lens shift?
- No. ProjectorCentral states it has no lens shift, and BenQ lists a fixed 110% offset and a 1.1x manual zoom.
Sources
Price, stock and rating come from Amazon and update automatically (last checked Nov 14, 2026, 10:01 PM).
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