ViewSonic LS740-4K
#16 in 4KFull review
A bright 4K laser projector for living rooms with ambient light, golf simulators and large screens, for buyers who will add their own streaming device.
Amazon $1,799.99$1,799.99
The ViewSonic LS740-4K rates 4.2 among 4K projectors; the XuanPad RD811 Google TV rates 3.3 among native 1080p ones. The XuanPad RD811 Google TV costs $1,530 less ($269.99 vs $1,799.99).
XuanPad RD811 Google TV
#64 in Native 1080pFull review
A slim Google TV projector with licensed Netflix for bedrooms and camping trips. Ignore the 5000 ANSI headline and plan on a dark room.
Amazon $269.99$269.99
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.
Scores side by side
These two sit in different type classes (4K and native 1080p), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | ViewSonic LS740-4K | XuanPad RD811 Google TV |
|---|---|---|
| Overall rating | 4.2/5 | 3.3/5 |
| Brightness 25% | 100 5,000 ANSI lumens | 0 listed 5,000 lumens rating not credible |
| Value 15% | 96 $0.36 per lumen | 50 no rated brightness (neutral score used) |
| Resolution 10% | 100 4K (pixel shift) | 100 1920 x 1080 native |
| Streaming 15% | 0 no built-in apps; needs a streaming stick | 100 Google TV with licensed Netflix |
| Setup 10% | 20 1.6x zoom | 60 Autofocus, auto keystone |
| Light life 10% | 100 30,000 hour laser | 50 light source life not published (neutral score used) |
| Gaming 10% | 100 4.2 ms input lag | 50 input lag not published (neutral score used) |
| Warranty 5% | 100 3-year warranty | 50 2-year warranty |
Specifications
| ViewSonic LS740-4K | XuanPad RD811 Google TV | |
|---|---|---|
| Picture | ||
| Brightness | 5,000 ANSI | 5,000 ANSI (listed, not credible) |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 1080p |
| Display | DLP | - |
| Light source | laser | - |
| Light source life | 30,000 hours | - |
| Dynamic contrast | 3,000,000:1 | - |
| Placement | ||
| Throw | Standard throw (1.4:1) | Standard throw |
| Largest image | 300 in | 200 in |
| Autofocus | No | Yes |
| Auto keystone | No | Yes |
| Obstacle avoidance | No | - |
| Auto screen fit | No | - |
| Optical zoom | 1.6x | - |
| Streaming and gaming | ||
| Built-in apps | None | Google TV, licensed Netflix |
| Input lag | 4.2 ms | - |
| Top refresh rate | 240 Hz | - |
| HDMI ports | 2 | - |
| Speakers | 15 W | 30 W |
| Build | ||
| Battery | None | None |
| Fan noise | 32 dB | - |
| Power | 165 W | - |
| Dimensions | 11.3 x 8.5 x 5.1 in (W x D x H) | 7.67 x 7.7 x 2.04 in |
| Weight | 6.8 lb | 2.8 lb |
| Warranty | 3 years | 2 years |
| Released | 2026-08 | - |