BillionFables

Side by side

BenQ TK705STi vs BenQ TK710STi: 705STi has lower 4K60 lag, 710STi adjusts to a fixed table

Quick verdict

When its fixed lens matches the room, the TK705STi gives you Google TV and responsive 4K/60 gaming. When a fixed table needs optical adjustment, or a compatible PC will run 1080p high refresh, the TK710STi is the answer. Lower listed lag at 60 Hz and a higher supported refresh rate meet different needs.

Before you buy

Why, and what it costs you

Kids gaming and adults watching sport call for different checks

For regular 60 Hz console play, TK705STi lists 11.7 ms less lag at 4K/60. TK710STi is the choice with documented 1080p/120 or /240 modes behind it, because TK705STi’s higher-refresh support is unconfirmed while the manufacturer scan ranges disagree. Live sport also hinges on the source service and room lighting, so the gaming figure by itself can’t pick the family’s all-purpose projector.

Where this comes from

BenQ TK705STi: 5 ms at 4K/60. The US page lists 23 to 60 Hz, while the manual lists a 23 to 120 Hz scan range and timing tables only up to 60 Hz. Higher-refresh support remains unconfirmed. BenQ TK710STi: 16.7 ms at 4K/60, 1080p up to 240 Hz. Difference 11.7 ms. No broadcast quality conclusion inferred.

The catch

BenQ TK705STi

Before choosing it for a high-refresh PC, confirm the exact higher-refresh input mode. The fixed lens can also clash with a shared room.

The catch

BenQ TK710STi

Its published 4K/60 latency gets no help from the higher-refresh formats.

BenQ TK705STi

BenQ TK705STi

Why pick it
  • Most of your console sessions run at 4K/60
  • Your screen and furniture suit the fixed 0.8 throw
The catch
Before choosing it for a high-refresh PC, confirm the exact higher-refresh input mode. The fixed lens can also clash with a shared room.
See price & reviews on Amazon
BenQ TK710STi

BenQ TK710STi

Why pick it
  • You will run 1080p at 120 or 240 Hz from a compatible PC
  • A table or shelf that cannot move gets help from optical zoom
The catch
Its published 4K/60 latency gets no help from the higher-refresh formats.
See price & reviews on Amazon

We may earn a commission from qualifying Amazon purchases. How we make money

Comparison updated , Product data updated , Amazon.com / United States

What this page compares

Picking between the BenQ TK705STi and TK710STi for a small family room? Match sports viewing, console habits, fixed furniture and cables against the gaming features that help.

Which one fits

Pick the situations that sound like you

  • Console gaming at 4K/60 with a fixed lens position that fits both

    At that same format, TK705STi lists lower lag.

    BenQ TK705STi
    Better fit
    BenQ TK710STi
    Good

  • Needing 1080p/240 from a compatible PC

    This format is positively documented for TK710STi. TK705STi’s support for higher refresh rates is still unconfirmed.

    BenQ TK705STi
    Caution
    BenQ TK710STi
    Better fit

  • A picture of 120 inches with the lens 6.5 feet from the screen

    That optical distance is covered by TK710STi only.

    BenQ TK705STi
    Not suitable
    BenQ TK710STi
    Better fit

  • Hoping one USB-C cable can fully power a gaming laptop

    TK705STi tops out at 30W output. See what power your device requires.

    BenQ TK705STi
    Caution
    BenQ TK710STi
    Not suitable

In practice

Differences you will notice

Kids gaming and adults watching sport call for different checks

For regular 60 Hz console play, TK705STi lists 11.7 ms less lag at 4K/60. TK710STi is the choice with documented 1080p/120 or /240 modes behind it, because TK705STi’s higher-refresh support is unconfirmed while the manufacturer scan ranges disagree. Live sport also hinges on the source service and room lighting, so the gaming figure by itself can’t pick the family’s all-purpose projector.

How we worked this out

BenQ TK705STi: 5 ms at 4K/60. The US page lists 23 to 60 Hz, while the manual lists a 23 to 120 Hz scan range and timing tables only up to 60 Hz. Higher-refresh support remains unconfirmed. BenQ TK710STi: 16.7 ms at 4K/60, 1080p up to 240 Hz. Difference 11.7 ms. No broadcast quality conclusion inferred.

A shared playroom might leave no spot to move the table

TK705STi’s fixed lens needs about seven feet at 120 inches, while TK710STi covers about six to 7.2 feet. When the sofa and play area leave room for the lens only 6.5 feet away, TK710STi alone fits the full picture optically.

How we worked this out

BenQ TK705STi: 0.8 × 104.59 / 12 = 6.97 feet. BenQ TK710STi: 0.69 to 0.83 gives 6.01 to 7.23 feet. Image diagonal 120 inches at 16:9.

The cable saving depends on the portable device

Through USB-C, TK705STi can both carry video and supply up to 30W. A compatible low-power device might need fewer leads as a result, yet that doesn’t mean a gaming laptop gets full-power charging. With children or pets crossing the floor, map out the entire cable route instead of assuming USB-C gets rid of the power lead.

How we worked this out

BenQ TK705STi: USB-C DisplayPort input and up to 30W power out. BenQ TK710STi: HDMI video inputs, no USB-C DisplayPort input listed. Exact device power and protocol must be checked.

Plug in your numbers

Will either projector work in your room?

This checks hard limits only. Personal preferences are left out of the math.

BenQ TK705STi

Check this one yourself

We do not have a complete verified lens range for this exact model.

BenQ TK710STi

Does not work with your numbers

For a 120-inch 16:9 picture, the calculated lens range is about 6.01 to 7.23 ft. You entered 9.50 ft.

Measure distance from the lens to the screen. The math assumes a 16:9 picture and uses the verified throw range for each exact model.

Option A
BenQ TK705STi

BenQ, TK705STi

TK705STi

With the short-lens TK705, a smaller room gets Google TV and low-lag 4K gaming, as long as the furniture can sit at its fixed throw distance.

Best for
Most of your console sessions run at 4K/60

Facts we checked

  • Optics: Fixed 0.8 throw
  • Published 4K/60 lag: 5 ms
  • High-refresh formats: Higher-refresh support unconfirmed
  • Light output: 3,000 ANSI lumens, 4LED
See price & reviews on Amazon
Option B
BenQ TK710STi

BenQ, TK710STi

TK710STi

This short-throw variant of the TK710 offers the same laser brightness and low-latency modes from a spot much nearer the screen.

Best for
You will run 1080p at 120 or 240 Hz from a compatible PC

Facts we checked

  • Optics: 0.69 to 0.83 optical range
  • Published 4K/60 lag: 16.7 ms
  • High-refresh formats: 1080p up to 240 Hz
  • Light output: 3,200 ANSI lumens, laser
See price & reviews on Amazon

Spec by spec

Where they really differ

Where BenQ TK705STi and BenQ TK710STi differ
SpecBenQ TK705STiBenQ TK710STiIn practice
OpticsFixed 0.8 throw0.69 to 0.83 optical rangeEven a small room gains from some flexibility in placement.
Published 4K/60 lag5 ms16.7 msThe comparison uses the same stated format and respects the processing settings.
High-refresh formatsHigher-refresh support unconfirmed1080p up to 240 HzLower lag at 60 Hz says nothing about support for 120 or 240 Hz.
Light output3,000 ANSI lumens, 4LED3,200 ANSI lumens, laserA small difference in ratings won’t decide how it performs in a daytime room.
Computer videoUSB-C DisplayPort with up to 30W power outHDMI, no USB-C DisplayPort listedVerify the source’s video mode and power need before promising just one cable.

Trade-offs

What each pick costs you

With BenQ TK705STi

  • The US page gives 23 to 60 Hz. The shared manual gives a 23 to 120 Hz scan range but input timing tables that stop at 60 Hz. Support for higher refresh is still unconfirmed, so check the exact model and input mode before you buy.

With BenQ TK710STi

  • Color is built around Rec.709, which covers less than RGB-laser and cinema-first wide-gamut models.

Change of plan

When the answer changes

Most of your console sessions run at 4K/60

Go with BenQ TK705STi. Your screen and furniture suit the fixed 0.8 throw

You will run 1080p at 120 or 240 Hz from a compatible PC

Go with BenQ TK710STi. A table or shelf that cannot move gets help from optical zoom

By the numbers

What the data shows

What we found across the home projectors we compare, plus the checked facts behind each finding.

Show the facts and the math
Models in the comparison
2 models
Sources
4 covering these models
Product data updated
The facts and sources behind each product in this recommendation
ProductNeeds it meetsFacts we checkedSources
BenQ TK705STi
  • Most of your console sessions run at 4K/60
  • Your screen and furniture suit the fixed 0.8 throw
  • Google TV built in and USB-C video keep your device setup simple
  • Optics: Fixed 0.8 throw
  • Published 4K/60 lag: 5 ms
  • High-refresh formats: Higher-refresh support unconfirmed
  • Light output: 3,000 ANSI lumens, 4LED
  • Computer video: USB-C DisplayPort with up to 30W power out
BenQ TK710STi
  • You will run 1080p at 120 or 240 Hz from a compatible PC
  • A table or shelf that cannot move gets help from optical zoom
  • Your room is a good match for the laser model’s connection arrangement
  • Optics: 0.69 to 0.83 optical range
  • Published 4K/60 lag: 16.7 ms
  • High-refresh formats: 1080p up to 240 Hz
  • Light output: 3,200 ANSI lumens, laser
  • Computer video: HDMI, no USB-C DisplayPort listed

Ready to buy

See today’s price and what owners say

Open either model on Amazon for the current price, customer reviews and delivery options.

Each link opens in a new tab.

We may earn a commission from qualifying Amazon purchases. How we make money

Related comparisons

ComparisonBenQ TK710 vs BenQ TK710STi: TK710 adds vertical lens shift, STi fits closerBenQ TK710 and TK710STi compared on the distance your screen requires, lens adjustment, streaming and gaming, with a 120-inch room-fit example to make the choice clear.ComparisonBenQ TK705i vs BenQ TK705STi: STi fits 120 inches from about 7 ft while i adjusts farther backWhich of the BenQ TK705i and TK705STi fits a real living room? Compare 120-inch placement, shelf flexibility, console response and the space you need around the seats.ComparisonBenQ X500i vs BenQ TK705STi: TK705STi has lower 4K60 lag, X500i has verified 1080p240Setting up a small gaming room? See when optical zoom and 1080p/240 outweigh 4K/60 latency and built-in Google TV on the BenQ X500i versus the TK705STi.Buying guideThe best projector for gaming on a big screenProjectors for consoles and PCs with low-latency 4K60 and high-refresh support, and the picture-quality tradeoffs spelled out.