Main trade-off
BenQ X500i
Its lower rated output leaves less light-output headroom for a very large screen.
Head-to-head
Choose the TK710STi when you need the higher published light output for a large picture or occasional room lighting. Choose the X500i when its lower-cost LED package fits a dark-room budget. Both use the same 0.69 to 0.83 throw range and list the same gaming latency, so the laser upgrade does not solve a placement or refresh problem.
Before you choose
A shelf eight feet from a 120-inch screen is too far back for either optical range. Their longest 120-inch distance is about 7.2 feet. If this is your constraint, compare a longer lens before paying for more light.
What this is based on
BenQ X500i: 0.69 to 0.83 throw. 104.59 × 0.83 / 12 = 7.23 feet. BenQ TK710STi: The same 0.69 to 0.83 optical throw range.
Main trade-off
Its lower rated output leaves less light-output headroom for a very large screen.
Main trade-off
More rated brightness brings no extra optical placement range or documented gaming format.


BenQ X500i vs TK710STi for a short gaming room. Compare identical throw ranges, the brightness claim, lamp-free upkeep and high-refresh limits.
Winner by situation
Both can optically frame a 120-inch picture at roughly this distance.
The higher published output supports the TK710STi case, though light on the screen still reduces contrast.
Neither fits a full-width 120-inch image optically from that distance.
The published input-lag figures do not support that reason to upgrade.
What matters in practice
A shelf eight feet from a 120-inch screen is too far back for either optical range. Their longest 120-inch distance is about 7.2 feet. If this is your constraint, compare a longer lens before paying for more light.
BenQ X500i: 0.69 to 0.83 throw. 104.59 × 0.83 / 12 = 7.23 feet. BenQ TK710STi: The same 0.69 to 0.83 optical throw range.
A 150-inch 16:9 picture has 56 percent more area than a 120-inch picture. The TK710STi has a 45 percent higher manufacturer brightness rating. Even those headline figures do not imply that a 150-inch TK710STi image is as bright per square foot as a 120-inch X500i image.
BenQ X500i: 2,200 ANSI-lumen claim. Area ratio = (150 / 120)² = 1.5625. BenQ TK710STi: 3,200 ANSI-lumen claim. Output ratio = 3200 / 2200 = 1.455. Ratings are not calibrated-mode measurements.
If a gaming laptop is carried into a room that also serves as the children’s play space, X500i can accept video from a compatible USB-C DisplayPort port. TK710STi needs an HDMI path or suitable adapter. X500i’s 5W output is too limited to assume it will power a gaming laptop, so plan that separate lead too.
BenQ X500i: USB-C DisplayPort input, PD out 5V/1A, equal format-specific lag to TK710STi. BenQ TK710STi: HDMI video inputs and no USB-C DisplayPort input in the manufacturer interface table.
Try your real numbers
The result checks hard limits only. Preferences stay out of the calculation.
For a 120-inch 16:9 picture, the manual-table lens range is about 6.01 to 7.23 ft. Your input is 9.50 ft. Optical fit only: use the 1.2x optical zoom, level square placement at the fixed image height, body/cable space, 50 cm wall clearance and free airflow. No optical lens shift. For image quality, BenQ recommends the manual’s non-gray table rows. Test the actual image before mounting. Digital correction adds no optical range.
For a 120-inch 16:9 picture, the calculated lens range is about 6.01 to 7.23 ft. Your input is 9.50 ft.
Distance is measured from the lens to the screen. The calculation uses a 16:9 image and the verified optical throw range for each exact model.

BenQ, X500i
A short-throw 4LED gaming projector for putting a big image in front of a desk or sofa without using the full depth of the room.

BenQ, TK710STi
The short-throw TK710 variant brings the same laser brightness and low-latency modes much closer to the screen.
Meaningful differences
| What changes | BenQ X500i | BenQ TK710STi | Why it matters |
|---|---|---|---|
| 120-inch placement | About 6.0 to 7.2 ft | About 6.0 to 7.2 ft | Neither gives extra room to work with for this screen size. |
| Light engine | 4LED, 2,200 ANSI-lumen claim | Laser, 3,200 ANSI-lumen claim | Higher rated output is the main hardware reason to step up, with picture-mode caveats. |
| Portable computer connection | USB-C DisplayPort input with 5W power out | HDMI video inputs, no USB-C DisplayPort input listed | A compatible laptop can connect directly to X500i, but still needs its own adequate power supply. |
| Built-in speakers | Two 5W speakers | One 5W speaker | This changes the built-in arrangement, without proving sound quality or room loudness. |
| 4K gaming | 16.7 ms at 4K/60 | 16.7 ms at 4K/60 | No documented response advantage follows from the laser source. |
| 1080p gaming | 4.2 ms at 240 Hz, published | 4.2 ms at 240 Hz, published | Both need a compatible high-refresh source and the correct mode. |
| Streaming | Included Android TV device | Included Android TV device | Neither purchase requires a separate device for supported apps. |
What you give up
Recommendation switch
Choose BenQ X500i. The same short-throw range already fits your screen
Choose BenQ TK710STi. A larger screen or occasional lighting gives brightness more value
What the facts say
Useful conclusions from the current home projectors comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| BenQ X500i |
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| BenQ TK710STi |
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