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  3. TK705STi vs UHZ66

BenQ TK705STi vs Optoma UHZ66

What TK705STi does better (3) and where UHZ66 wins (7) — every spec side by side.

BenQ TK705STi
BenQ · 2025TK705STi
7.5Score
3 advantages≈ US$1,300
vs
Optoma UHZ66
Optoma · 2023UHZ66
9.4Score
7 advantages≈ US$1,250
Higher score
6.9Picture8.9
3.4Gaming & inputs8.9
8.0Noise, lifetime & portability8.8
Dimensions

Size comparison

TK705STiUHZ66
229 × 168250274 × 114216
TK705STiUHZ66Difference
Height168 mm114 mm+54 mm
Width229 mm274 mm−45 mm
Depth250 mm216 mm+34 mm
Weight3.8 kg3 kg+0.8 kg

Drawn to the same scale from the official dimensions (front and side).

Why is TK705STi better than UHZ66?

  1. Automatic keystone correctionYes · UHZ66: No
  2. Fan noise26 dB vs 30 dB+15%
  3. Built-in speakers (total output)16 W vs 15 W+7%

Why is UHZ66 better than TK705STi?

  1. Maximum refresh rate60 Hz vs 240 Hz4×
  2. Brightness (ANSI / ISO lumens)3,000 lm vs 4,000 lm+33%
  3. Light source life20,000 h vs 30,000 h+50%
  4. Contrast ratio (dynamic / claimed)700:1 vs 500,000:1714.3×
  5. Ethernet (LAN)No · TK705STi: Yes
  6. Power consumption250 W vs 185 W+35%
  7. Weight3.8 kg vs 3 kg+27%
Specifications

Side by side

BenQ TK705STiBenQ TK705STi≈ US$1,3007.5
Optoma UHZ66Optoma UHZ66≈ US$1,2509.4
Picture
Resolution (on screen)3840 × 2160 (4K UHD)3840 × 2160 (4K UHD)
Native panel resolution1920 × 1080 (Full HD)1920 × 1080 (Full HD)
4K method4K by pixel shifting4K by pixel shifting
Display technologyDLPDLP
Light sourceLEDLaser
Brightness (ANSI / ISO lumens)3,000 lm4,000 lm
Native contrast ratio600,000:1—
Contrast ratio (dynamic / claimed)700:1500,000:1
HDR supportYesYes
HDR formatsHDR10+, HDR10, HLG—
Colour gamut (Rec.709)98%—
Gaming
Input lag5 ms—
Maximum refresh rate60 Hz240 Hz
Game / low-latency modeYesYes
Lens & placement
Throw ratio0.8:11.4:1
Throw ratio (zoomed in)—2.24:1
Throw typeShort throw (0.4–1.0:1)Standard throw (1.0:1 and longer)
Distance for a 100″ 16:9 image1.77 m3.1 m
Smallest image size—26″
Largest image size—303″
Optical zoom—1.6×
Lens shift—None
Keystone correctionYesYes
Automatic keystone correctionYesNo
Sound
Built-in speakers (total output)16 W15 W
Smart & streaming
Smart platformGoogle TV—
Built-in smart platformYes—
Netflix (officially licensed)Yes—
Wi-FiYes—
BluetoothYes—
Chromecast built-inYes—
Connectivity
HDMI inputs22
HDMI version—2
HDMI eARCYesYes
USB portYesYes
Ethernet (LAN)NoYes
VGA inputNoNo
Audio outputYesYes
Battery, power & lifetime
Power consumption250 W185 W
Light source life20,000 h30,000 h
Light source life (eco mode)30,000 h—
Design & noise
Fan noise26 dB30 dB
Fan noise (eco mode)—28 dB
Weight3.8 kg3 kg
Width229 mm274 mm
Height168 mm114 mm
Depth250 mm216 mm
Colours—White
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