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  3. UZ38X vs LX750-4K

Optoma UZ38X vs ViewSonic LX750-4K

What UZ38X does better (4) and where LX750-4K wins (1) — every spec side by side.

Optoma UZ38X
Optoma · 2026UZ38X
7.9Score
4 advantages≈ US$1,050
Higher score
vs
ViewSonic LX750-4K
ViewSonic · 2026LX750-4K
5.9Score
1 advantage≈ US$1,500
8.6Picture7.9
4.6Setup & placement3.9
6.4Noise, lifetime & portability4.5
Dimensions

Size comparison

UZ38XLX750-4K
238 × 130215312 × 104234
UZ38XLX750-4KDifference
Height130 mm104 mm+26 mm
Width238 mm312 mm−74 mm
Depth215 mm234 mm−19 mm
Weight3.4 kg3.5 kg−0.1 kg

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

Why is UZ38X better than LX750-4K?

  1. Built-in speakers (total output)15 W vs 10 W+50%
  2. Light source life30,000 h vs 20,000 h+50%
  3. Contrast ratio (dynamic / claimed)1,500,000:1 vs 1,200:11,250×
  4. Weight3.4 kg vs 3.5 kg+3%

Why is LX750-4K better than UZ38X?

  1. Brightness (ANSI / ISO lumens)3,800 lm vs 4,000 lm+5%
Specifications

Side by side

Optoma UZ38XOptoma UZ38X≈ US$1,0507.9
ViewSonic LX750-4KViewSonic LX750-4K≈ US$1,5005.9
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 sourceLaserLaser
Brightness (ANSI / ISO lumens)3,800 lm4,000 lm
Contrast ratio (dynamic / claimed)1,500,000:11,200:1
Lens & placement
Throw ratio1.21:1—
Throw ratio (zoomed in)1.59:1—
Throw typeStandard throw (1.0:1 and longer)—
Distance for a 100″ 16:9 image2.68 m—
Smallest image size28″60″
Largest image size300″300″
Optical zoom1.3×1.3×
Lens shift—None
Keystone correctionYesYes
Automatic keystone correctionNoNo
Sound
Built-in speakers (total output)15 W10 W
Smart & streaming
Smart platform—Google TV
Built-in smart platform—Yes
Netflix (officially licensed)—Yes
Wi-Fi—Yes
Bluetooth—Yes
Chromecast built-in—Yes
Internal storage—8 GB
Connectivity
HDMI inputs22
HDMI version2—
USB portYesYes
Ethernet (LAN)NoNo
VGA inputNoNo
Audio outputYesYes
Battery, power & lifetime
Light source life30,000 h20,000 h
Light source life (eco mode)—30,000 h
Design & noise
Fan noise33 dB33 dB
Fan noise (eco mode)28 dB27 dB
Weight3.4 kg3.5 kg
Width238 mm312 mm
Height130 mm104 mm
Depth215 mm234 mm
ColoursBlackWhite
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