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
The Optoma HD146X rates 3.8 among 1080p and under projectors; the Optoma UHD35STx rates 3.8 among 4K ones. The Optoma HD146X costs $700 less ($599 vs $1,299).
Optoma UHD35STx
#21 in 4KFull review
A short throw 4K gaming projector for small rooms where the projector has to sit close to the screen.
Amazon $1,299$1,299
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 (1080p and under and 4K), 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 | Optoma HD146X | Optoma UHD35STx |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Brightness 25% | 100 3,600 ANSI lumens | 95 3,600 ANSI lumens |
| Value 15% | 98 $0.17 per lumen | 96 $0.36 per lumen |
| Resolution 10% | 100 1920 x 1080 native | 100 4K (pixel shift) |
| Streaming 15% | 0 no built-in apps; needs a streaming stick | 0 no built-in apps; needs a streaming stick |
| Setup 10% | 20 1.1x zoom | 0 Manual focus and keystone |
| Light life 10% | 69 15,000 hour lamp | 69 15,000 hour lamp |
| Gaming 10% | 81 16 ms input lag | 100 4 ms input lag |
| Warranty 5% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Optoma HD146X | Optoma UHD35STx | |
|---|---|---|
| Picture | ||
| Brightness | 3,600 ANSI | 3,600 ANSI |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 1080p | 4K (pixel shift from 1920x1080) |
| Display | DLP | DLP |
| Light source | lamp | lamp |
| Light source life | 15,000 hours | 15,000 hours |
| HDR | - | HDR10, HLG |
| Native contrast | 25,000:1 | - |
| Dynamic contrast | - | 1,000,000:1 |
| Placement | ||
| Throw | Standard throw (1.5:1) | Short throw (0.5:1) |
| Largest image | 301 in | 300 in |
| Autofocus | No | No |
| Auto keystone | No | No |
| Obstacle avoidance | No | No |
| Auto screen fit | No | No |
| Optical zoom | 1.1x | None |
| Streaming and gaming | ||
| Built-in apps | None | None |
| Input lag | 16 ms | 4 ms |
| Top refresh rate | - | 240 Hz |
| HDMI ports | 1 | 2 |
| eARC | No | - |
| Speakers | 5 W | 10 W |
| Build | ||
| Battery | None | None |
| Fan noise | 28 dB | 28 dB |
| Power | 295 W | 320 W |
| Dimensions | 12.44 x 9.61 x 4.25 in | 12.4 x 10.63 x 4.65 in (W x D x H) |
| Weight | 6.2 lb | 7.7 lb |
| Warranty | 1 years | 1 years |
| Released | 2020-02 | 2022-09 |