Main trade-off
BenQ X500i
Its published 4K/60 latency is higher and USB-C power is limited to 5W.
Head-to-head
BenQ X500i vs BenQ TK705STi: X500i has verified 1080p240, TK705STi has lower 4K60 lag
The short answer
Choose the X500i for a high-refresh PC or a short shelf that needs optical zoom. Choose the TK705STi for 60 Hz console games and straightforward Google TV streaming, if its fixed lens fits your screen. The newer model has lower manufacturer-listed lag at 4K/60. X500i is the bounded choice when its documented 1080p/240 mode is required, while higher-refresh support on TK705STi remains unconfirmed.
Before you choose
The reasoning and the trade-offs
One shelf can fit both, another cannot
At seven feet, both lenses can frame a 120-inch 16:9 image. At six feet, only the X500i is close to that target. The TK705STi would make about 103 inches. Measure the lens position before treating them as interchangeable.
What this is based on
BenQ X500i: 120-inch distance from 0.69 to 0.83 throw = 6.01 to 7.23 feet. BenQ TK705STi: 0.8 throw gives 103.28 inches diagonal at six feet.
Main trade-off
BenQ TK705STi
It gives up optical zoom. Its higher-refresh support remains unconfirmed, while X500i positively documents 1080p/240.
BenQ X500i
- Choose it for
- You play competitive PC games at 1080p/240
- Its 1.2x zoom gives some movement around a short-throw position
- Main trade-off
- Its published 4K/60 latency is higher and USB-C power is limited to 5W.
BenQ TK705STi
- Choose it for
- Your games run at 4K/60 and you want built-in streaming
- BenQ specifies 5 ms at 4K/60 compared with 16.7 ms
- Main trade-off
- It gives up optical zoom. Its higher-refresh support remains unconfirmed, while X500i positively documents 1080p/240.
About this comparison
BenQ X500i vs TK705STi for a small gaming room. See when optical zoom and 1080p/240 matter more than 4K/60 latency and built-in Google TV.
Winner by situation
Start with what you need it to do
PC esports at 1080p/240
The X500i documents this exact mode. Higher-refresh support on the TK705STi remains unconfirmed because manufacturer scan ranges conflict.
- BenQ X500i
- Better fit
- BenQ TK705STi
- Caution
A seven-foot table and a 120-inch screen
Both optical designs fit approximately this geometry. Leave clearance behind the chassis.
- BenQ X500i
- Good
- BenQ TK705STi
- Good
A six-foot table that cannot move
The X500i can get near 120 inches here. The STi produces a smaller image at the same position.
- BenQ X500i
- Better fit
- BenQ TK705STi
- Caution
Streaming plus 60 Hz console games
Built-in Google TV and lower claimed 4K/60 lag favor the STi when its fixed lens fits.
- BenQ X500i
- Good
- BenQ TK705STi
- Better fit
What matters in practice
The differences that matter
One shelf can fit both, another cannot
At seven feet, both lenses can frame a 120-inch 16:9 image. At six feet, only the X500i is close to that target. The TK705STi would make about 103 inches. Measure the lens position before treating them as interchangeable.
How we reached this conclusion
BenQ X500i: 120-inch distance from 0.69 to 0.83 throw = 6.01 to 7.23 feet. BenQ TK705STi: 0.8 throw gives 103.28 inches diagonal at six feet.
Lower input lag and higher refresh solve different problems
The STi’s published 4K/60 lag is 11.7 ms lower. The X500i can accept a new 1080p frame every 4.17 ms at 240 Hz instead of every 16.67 ms at 60 Hz. These figures measure different stages, so adding them into a made-up overall response score would mislead.
How we reached this conclusion
BenQ X500i: 16.7 ms at 4K/60. At 240 Hz, one source-frame interval is 1000 / 240 = 4.17 ms. BenQ TK705STi: 5 ms at 4K/60. At 60 Hz, one source-frame interval is 1000 / 60 = 16.67 ms.
A desk that doubles as a movie station changes the choice
The STi has six times the listed USB-C power ceiling, useful for a compatible low-power source on a cluttered desk. Check the source device’s own power demand. A gaming laptop that needs 65W or more still keeps its charger.
How we reached this conclusion
BenQ X500i: USB-C DisplayPort and 5V/1A power, equivalent to 5W. BenQ TK705STi: USB-C DisplayPort and up to 30W. 30 / 5 = 6, without implying six times the charging speed.
Try your real numbers
Will either projector fit your room?
The result checks hard limits only. Preferences stay out of the calculation.
BenQ X500i
Does not fit these inputsFor 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.
BenQ TK705STi
Needs a manual checkNo complete verified optical range is stored for this exact model.
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.
Choice A
BenQ, X500i
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.
- Best matched use
- You play competitive PC games at 1080p/240
Checked facts
- 120-inch lens distance: About 6.0 to 7.2 ft
- Optical adjustment: 0.69 to 0.83 throw, 1.2x zoom
- Gaming format: 4K/60 or up to 1080p/240
- Published 4K/60 lag: 16.7 ms
Choice B
BenQ, TK705STi
TK705STi
The short-lens TK705 puts Google TV and low-lag 4K gaming in a smaller room, provided the furniture can sit at its fixed throw distance.
- Best matched use
- Your games run at 4K/60 and you want built-in streaming
Checked facts
- 120-inch lens distance: About 7.0 ft
- Optical adjustment: Fixed 0.8 throw
- Gaming format: 4K/60 documented, higher-refresh support unconfirmed
- Published 4K/60 lag: 5 ms
Meaningful differences
What changes the fit
| What changes | BenQ X500i | BenQ TK705STi | Why it matters |
|---|---|---|---|
| 120-inch lens distance | About 6.0 to 7.2 ft | About 7.0 ft | Both work near seven feet. The X500i also reaches a larger image from closer in. |
| Optical adjustment | 0.69 to 0.83 throw, 1.2x zoom | Fixed 0.8 throw | The X500i tolerates more variation in the position of a small table or ceiling mount. |
| Gaming format | 4K/60 or up to 1080p/240 | 4K/60 documented, higher-refresh support unconfirmed | Choose for the exact input format. Conflicting TK705STi scan ranges do not establish a universal refresh ceiling. |
| Published 4K/60 lag | 16.7 ms | 5 ms | These are manufacturer figures, not an independent head-to-head result. |
| Streaming | Included QS02 Android TV device | Built-in Google TV | Both avoid buying a separate streamer for their supported apps. |
| USB-C power | 5V/1A, up to 5W | Up to 30W | The STi can supply more power to a compatible device, but 30W will not power every laptop under load. |
What you give up
Every choice has a cost
If you choose BenQ X500i
- The short lens is a poor match for some rear shelves in deeper rooms.
If you choose BenQ TK705STi
- The US page lists 23 to 60 Hz, while the shared manual lists a 23 to 120 Hz scan range and input timing tables only up to 60 Hz. Higher-refresh support remains unconfirmed. Check the exact model and input mode before purchase.
Recommendation switch
The decision flips if...
You play competitive PC games at 1080p/240
Choose BenQ X500i. Its 1.2x zoom gives some movement around a short-throw position
Your games run at 4K/60 and you want built-in streaming
Choose BenQ TK705STi. BenQ specifies 5 ms at 4K/60 compared with 16.7 ms
What the facts say
What the comparison shows
Useful conclusions from the current home projectors comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| BenQ X500i |
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| BenQ TK705STi |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
BenQ X500i
You play competitive PC games at 1080p/240
See price & reviews on AmazonBenQ TK705STi
Your games run at 4K/60 and you want built-in streaming
See price & reviews on AmazonLinks open in a new tab.