Main trade-off
BenQ TK700
It needs roughly two more feet for the same large image at minimum throw.
Head-to-head
BenQ TK700 vs BenQ TK700ST: For 120 inches, ST fits 8–9 ft and TK700 fits 10–12
The short answer
Choose the TK700 for a lens position around ten to twelve feet from a 120-inch screen. Choose the TK700ST when that position is around eight to nine feet. Their published 4K/60 latency is identical. Paying more for the short-throw model makes sense only when it solves the room.
Before you choose
The reasoning and the trade-offs
There is a small gap where neither fills the screen optically
At a 9.6-foot lens position, neither model reaches exactly 120 inches within its optical range. The ST needs about 9.4 feet or less, while the TK700 starts around 9.8. Moving the mount a few inches can matter more than a brightness specification.
What this is based on
BenQ TK700: 120-inch 16:9 width 104.59 inches × 1.127 / 12 = 9.82 feet minimum. BenQ TK700ST: 104.59 × 1.08 / 12 = 9.41 feet maximum. Optical gap about 4.9 inches.
Main trade-off
BenQ TK700ST
Its short lens may make a rear shelf unusable for your chosen screen size.
BenQ TK700
- Choose it for
- Your 120-inch screen faces a lens ten to twelve feet away
- The longer throw can keep equipment behind the seats
- Main trade-off
- It needs roughly two more feet for the same large image at minimum throw.
BenQ TK700ST
- Choose it for
- Your 120-inch screen faces a lens eight to nine feet away
- The shorter lens avoids moving a screen in a shallow room
- Main trade-off
- Its short lens may make a rear shelf unusable for your chosen screen size.
About this comparison
BenQ TK700 vs TK700ST: which lens fits your room? Compare 120-inch throw distances, a fixed ceiling mount, lamp upkeep and console connections.
Winner by situation
Start with what you need it to do
A 120-inch screen and an eleven-foot lens position
Only the TK700 reaches this size optically from eleven feet.
- BenQ TK700
- Better fit
- BenQ TK700ST
- Not suitable
A 120-inch screen and an eight-foot lens position
Only the ST has the required short optical throw.
- BenQ TK700
- Not suitable
- BenQ TK700ST
- Better fit
A ceiling mount at 9.6 feet that cannot move
Neither interval includes this exact geometry. Recheck the target picture size before ordering.
- BenQ TK700
- Caution
- BenQ TK700ST
- Caution
A 4K/60 console with a separately chosen streamer
Published console latency and the need to plan external sources are shared.
- BenQ TK700
- Similar
- BenQ TK700ST
- Similar
What matters in practice
The differences that matter
There is a small gap where neither fills the screen optically
At a 9.6-foot lens position, neither model reaches exactly 120 inches within its optical range. The ST needs about 9.4 feet or less, while the TK700 starts around 9.8. Moving the mount a few inches can matter more than a brightness specification.
How we reached this conclusion
BenQ TK700: 120-inch 16:9 width 104.59 inches × 1.127 / 12 = 9.82 feet minimum. BenQ TK700ST: 104.59 × 1.08 / 12 = 9.41 feet maximum. Optical gap about 4.9 inches.
The ST suffix saves room depth, not lamp maintenance
At the nearest 120-inch position, the ST sits about two feet closer. Both remain lamp projectors. A household using the screen for television every evening should compare laser or LED alternatives separately rather than assuming the short-throw upgrade removes lamp replacement.
How we reached this conclusion
BenQ TK700: Nearest 120-inch position 9.82 feet. Lamp light source. BenQ TK700ST: Nearest position 7.84 feet. Difference 1.98 feet. Lamp light source.
A brighter rating should not overrule a mount that fits
The TK700’s rated output is about 7 percent higher. Neither manufacturer figure establishes a 7 percent advantage in your preferred picture mode. If the shorter lens keeps the projector off a walkway or avoids a new ceiling mount, that is a firmer reason to choose the ST.
How we reached this conclusion
BenQ TK700: Published 3,200 ANSI lumens. BenQ TK700ST: Published 3,000 ANSI lumens. 3200 / 3000 - 1 = 6.67 percent. No same-mode measurement supplied.
Choice A
BenQ, TK700
TK700
A conventional-throw 4K gaming projector that fits farther behind the seating than the similarly named TK700ST.
- Best matched use
- Your 120-inch screen faces a lens ten to twelve feet away
Checked facts
- 120-inch optical distance: About 9.8 to 12.7 ft
- Lens adjustment: 1.127 to 1.46 throw, 1.3x zoom
- 4K/60 input lag: 16.7 ms, published
- Light source: Lamp, 3,200 ANSI-lumen claim
Choice B
BenQ, TK700ST
TK700ST
A lamp-based short-throw 4K model for a gaming room where the projector can sit ahead of the sofa.
- Best matched use
- Your 120-inch screen faces a lens eight to nine feet away
Checked facts
- 120-inch optical distance: About 7.8 to 9.4 ft
- Lens adjustment: 0.9 to 1.08 throw, 1.2x zoom
- 4K/60 input lag: 16.7 ms, published
- Light source: Lamp, 3,000 ANSI-lumen claim
Meaningful differences
What changes the fit
| What changes | BenQ TK700 | BenQ TK700ST | Why it matters |
|---|---|---|---|
| 120-inch optical distance | About 9.8 to 12.7 ft | About 7.8 to 9.4 ft | The optical intervals do not overlap for this screen size. |
| Lens adjustment | 1.127 to 1.46 throw, 1.3x zoom | 0.9 to 1.08 throw, 1.2x zoom | An existing mount may suit one model and miss the other. |
| 4K/60 input lag | 16.7 ms, published | 16.7 ms, published | Short throw is a placement feature, not a faster console mode. |
| Light source | Lamp, 3,200 ANSI-lumen claim | Lamp, 3,000 ANSI-lumen claim | Both need lamp upkeep. The small rated brightness gap is not a calibrated picture comparison. |
| Streaming setup | External source required | External source required | Neither exact package should be confused with a streamer-equipped STi bundle. |
What you give up
Every choice has a cost
If you choose BenQ TK700
- A streaming device is separate and needs a connection.
If you choose BenQ TK700ST
- This exact TK700ST package does not include the TK700STi streaming dongle.
Recommendation switch
The decision flips if...
Your 120-inch screen faces a lens ten to twelve feet away
Choose BenQ TK700. The longer throw can keep equipment behind the seats
Your 120-inch screen faces a lens eight to nine feet away
Choose BenQ TK700ST. The shorter lens avoids moving a screen in a shallow room
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 TK700 |
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| BenQ TK700ST |
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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 TK700
Your 120-inch screen faces a lens ten to twelve feet away
See price & reviews on AmazonBenQ TK700ST
Your 120-inch screen faces a lens eight to nine feet away
See price & reviews on AmazonLinks open in a new tab.