Expert Comparison: BenQ TK700STi vs. Optoma UHD35STx

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After conducting an in-depth analysis of the BenQ TK700STi and Optoma UHD35STx projectors, we present our expert assessment of their respective strengths and shortcomings. Both projectors cater to home theater enthusiasts and gamers, offering distinct features that cater to specific needs and preferences.

BenQ TK700STi vs. Optoma UHD35STx Specs:

BenQ TK700STiOptoma UHD35STx
Contrast Ratio10,000:11,000,000:1
Brightness (Lumens)3,000 ANSI3,600 ANSI
Input lag4.2 - 16ms4.2 - 16.9ms
Throw Distance2.4' - 19.6'1.3' - 10.9'
Screen size30" - 300"33" - 300"
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Luminosity and Contrast Dynamics

The BenQ TK700STi delivers a luminosity of 3000 ANSI lumens, while the Optoma UHD35STx outperforms it with 3600 lumens. Although the difference may not be striking in most environments, the Optoma UHD35STx has an advantage in brightly lit settings.

In terms of contrast, the Optoma UHD35STx boasts an impressive 1,000,000:1 ratio, significantly surpassing the BenQ TK700STi’s 10,000:1. The elevated contrast on the Optoma UHD35STx translates to deeper blacks and more vivid colors, contributing to a captivating and dynamic visual experience. Check the current price on Amazon.

Resolution and Image Fidelity

Both projectors support 4K UHD resolution (3840×2160) and maintain a native aspect ratio of 16:9. The BenQ TK700STi achieves 96% coverage of the Rec. 709 color space, while the Optoma UHD35STx does not specify its color coverage. Nonetheless, our evaluation revealed that both projectors render exceptional image fidelity with rich colors and sharp details.

Projection Parameters and Screen Dimensions

The BenQ TK700STi features a throw ratio of 0.9~1.08 with a 1.2x zoom, while the Optoma UHD35STx maintains a throw ratio of 0.5:1 and a fixed zoom. As a short-throw projector, the Optoma UHD35STx can generate a 100″ image from just a few feet away, making it suitable for confined spaces or gaming setups. The BenQ TK700STi, conversely, necessitates greater distance between the projector and the screen, but provides increased flexibility with its zoom capability. (Check on Amazon)

Input Latency and Gaming Proficiency

The BenQ TK700STi exhibits an input latency of 16.7 ms at 4K 60Hz, 4.2 ms at 1080p 240Hz, and 8.3 ms at 1080p 120Hz. In comparison, the Optoma UHD35STx demonstrates a slightly higher input latency of 16.9 ms at 4K 60Hz and an equal 4.2 ms at 1080p 240Hz. Although both projectors offer low input latency suitable for gaming, the BenQ TK700STi holds a marginal advantage with reduced latency at 1080p 120Hz.

Connectivity and Acoustic Performance

Both projectors are equipped with multiple HDMI inputs and support HDMI Audio Return with eARC for the BenQ TK700STi and S/PDIF for the Optoma UHD35STx. Furthermore, the BenQ TK700STi includes an Android TV dongle and incorporates built-in Wi-Fi and Bluetooth capabilities, which the Optoma UHD35STx lacks.

Regarding acoustics, the BenQ TK700STi features a single 5W chamber speaker, whereas the Optoma UHD35STx houses a more robust 10W speaker. Although both projectors deliver respectable audio quality, the Optoma UHD35STx provides superior audio output.

Lamp Longevity

The BenQ TK700STi boasts a lamp lifespan of up to 15,000 hours in LampSave mode, 10,000 hours in ECO mode, 8,000 hours in SmartEco mode, and 4,000 hours in Normal mode. The Optoma UHD35STx offers a slightly longer lamp life, with up to 15,000 hours in Dynamic mode, 10,000 hours in Eco mode, and 4,000 hours in Bright mode.

Size and Weight

The BenQ TK700STi possesses dimensions of 12.2 x 4.3 x 9.6 inch and weighs6.83 lbs. In contrast, the Optoma UHD35STx is marginally larger and heavier, with dimensions of 12.4 x 10.63 x 4.65 inch. and a weight of 7.72 lbs.

BenQ TK700STiBenQ TK700STi projctor


  • Lower input lag at 1080p 120Hz
  • Adjustable 1.2x zoom feature
  • Built-in Wi-Fi and Bluetooth
  • Android TV dongle included
  • Compact and lightweight design


  • Lower contrast ratio
  • Longer throw distance

Optoma UHD35STx

Optoma UHD35STx projector


  • Higher contrast ratio
  • Short throw projection
  • Slightly higher brightness
  • Powerful 10W built-in speaker
  • Longer lamp life in Bright mode


  • Lacks Wi-Fi and Bluetooth
  • Fixed zoom, less flexibility


The BenQ TK700STi and Optoma UHD35STx projectors cater to distinct preferences and requirements. The BenQ TK700STi excels in terms of input latency at 1080p 120Hz and provides enhanced flexibility with its zoom feature. (Check on Additionally, it includes built-in Wi-Fi and Bluetooth capabilities, which the Optoma UHD35STx does not offer.

Conversely, the Optoma UHD35STx boasts a higher contrast ratio, marginally higher brightness, and a shorter throw ratio, rendering it ideal for small spaces or gaming setups. It also features a more powerful built-in speaker.

Ultimately, the selection between these two projectors hinges upon your specific needs and preferences. If you prioritize gaming performance and require adjustable zoom functionality, the BenQ TK700STi may be the superior choice. However, if you value a high contrast ratio, short throw distance, and enhanced audio output, the Optoma UHD35STx may better suit your needs.

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