BenQ X3100i
#1 in 4KFull review
A bright LED 4K gaming projector with streaming in the box, for gamers who want low lag and no lamp to replace.
Amazon $1,799$1,799
The BenQ X3100i is the better projector overall, rated 4.7 to 4.2. The BenQ X3100i leads on streaming and setup. The ViewSonic PX701-4K wins on value. The ViewSonic PX701-4K costs $823.01 less ($975.99 vs $1,799).
ViewSonic PX701-4K
#14 in 4KFull review
A low cost 4K gaming and movie projector for buyers who already have a streaming stick or console. Placement is fixed by the short zoom.
Amazon $975.99$975.99
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.
Which should you buy?
- Choose the BenQ X3100i for streaming (Android TV with licensed Netflix vs no built-in apps; needs a streaming stick) and setup (Auto keystone, 1.3x zoom, lens shift vs Auto keystone, 1.1x zoom).
- Choose the ViewSonic PX701-4K for value ($0.30 per lumen vs $0.55 per lumen).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4K projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | BenQ X3100i | ViewSonic PX701-4K |
|---|---|---|
| Overall rating | 4.7/5 | 4.2/5 |
| Brightness 25% | 91 3,300 ANSI lumens | 89 3,200 ANSI lumens |
| Value 15% | 86 $0.55 per lumen | 100 $0.30 per lumen |
| Resolution 10% | 100 4K (pixel shift) | 100 4K (pixel shift) |
| Streaming 15% | 100 Android TV with licensed Netflix | 0 no built-in apps; needs a streaming stick |
| Setup 10% | 70 Auto keystone, 1.3x zoom, lens shift | 50 Auto keystone, 1.1x zoom |
| Light life 10% | 100 30,000 hour LED | 100 20,000 hour lamp |
| Gaming 10% | 100 4.2 ms input lag | 100 4.2 ms input lag |
| Warranty 5% | 100 3-year warranty | 100 3-year warranty |
Independent measurements
BenQ X3100i
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| ProjectorCentral | 2,949 lm | 5 ms | - | 2,949 ANSI lumens in Bright mode with video-level white (3,361 with full-white signal); 1,199 in calibrated User mode, Eco. Lag 5 ms at 1080p/240, 9 ms at 1080p/120, 17 ms at 4K/60 in FPS mode. |
ViewSonic PX701-4K
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| ProjectorCentral | 2,582 lm | 16.8 ms | - | Brightest mode at the wide end of the zoom; lag measured at 1080p/60 (16.9 ms at 4K/60). |
Specifications
| BenQ X3100i | ViewSonic PX701-4K | |
|---|---|---|
| Picture | ||
| Brightness | 3,300 ANSI | 3,200 ANSI |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 4K (pixel shift from 1920x1080) |
| Display | DLP | DLP |
| Light source | LED | lamp |
| Light source life | 30,000 hours | 20,000 hours |
| HDR | HDR10 | HDR10, HLG |
| Color gamut | 100% DCI-P3 | - |
| Dynamic contrast | 600,000:1 | 12,000:1 |
| Placement | ||
| Throw | Standard throw (1.1:1) | Standard throw (1.5:1) |
| Largest image | 300 in | 300 in |
| Autofocus | No | No |
| Auto keystone | Yes | Yes |
| Obstacle avoidance | No | No |
| Auto screen fit | No | No |
| Optical zoom | 1.3x | 1.1x |
| Lens shift | Vertical | - |
| Streaming and gaming | ||
| Built-in apps | Android TV, licensed Netflix | None |
| Input lag | 4.2 ms | 4.2 ms |
| Top refresh rate | 240 Hz | 240 Hz |
| HDMI ports | 2 | 2 |
| eARC | Yes | - |
| Speakers | 10 W | 10 W |
| Build | ||
| Battery | None | None |
| Fan noise | 32 dB | 31 dB |
| Power | 330 W | 290 W |
| Dimensions | 10.7 x 8.4 x 10.2 in (W x D x H) | 12.3 x 8.7 x 4.3 in (W x D x H) |
| Weight | 15 lb | 6.2 lb |
| Warranty | 3 years | 3 years |
| Released | 2023-10 | 2021-02 |