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  3. HL6511i vs UZ38X

Acer HL6511i vs Optoma UZ38X

What HL6511i does better (2) and where UZ38X wins (3) — every spec side by side.

Acer HL6511i
Acer · 2026HL6511i
6.8Score
2 advantages≈ US$810
vs
Optoma UZ38X
Optoma · 2026UZ38X
7.9Score
3 advantages≈ US$1,050
Higher score
7.1Picture8.6
3.6Setup & placement4.6
7.1Noise, lifetime & portability6.4
Dimensions

Size comparison

HL6511iUZ38X
286 × 216115238 × 130215
HL6511iUZ38XDifference
Height216 mm130 mm+86 mm
Width286 mm238 mm+48 mm
Depth115 mm215 mm−100 mm
Weight3.4 kg3.4 kg=

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

Why is HL6511i better than UZ38X?

  1. Brightness (ANSI / ISO lumens)4,000 lm vs 3,800 lm+5%
  2. Contrast ratio (dynamic / claimed)3,500,000:1 vs 1,500,000:12.3×

Why is UZ38X better than HL6511i?

  1. Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
  2. Built-in speakers (total output)10 W vs 15 W+50%
  3. Light source life20,000 h vs 30,000 h+50%
Specifications

Side by side

Acer HL6511iAcer HL6511i≈ US$8106.8
Optoma UZ38XOptoma UZ38X≈ US$1,0507.9
Picture
Resolution (on screen)1920 × 1080 (Full HD)3840 × 2160 (4K UHD)
Native panel resolution1920 × 1080 (Full HD)1920 × 1080 (Full HD)
4K method—4K by pixel shifting
Display technologyDLPDLP
Light sourceLaserLaser
Brightness (ANSI / ISO lumens)4,000 lm3,800 lm
Contrast ratio (dynamic / claimed)3,500,000:11,500,000:1
HDR supportYes—
Lens & placement
Throw ratio1.5:11.21:1
Throw ratio (zoomed in)1.65:11.59:1
Throw typeStandard throw (1.0:1 and longer)Standard throw (1.0:1 and longer)
Distance for a 100″ 16:9 image3.32 m2.68 m
Smallest image size30″28″
Largest image size300″300″
Optical zoom—1.3×
Lens shiftNone—
AutofocusNo—
Keystone correctionYesYes
Automatic keystone correctionNoNo
Sound
Built-in speakers (total output)10 W15 W
Smart & streaming
Wi-FiYes—
Connectivity
HDMI inputs22
HDMI version22
USB portYesYes
Ethernet (LAN)NoNo
VGA inputNoNo
Audio outputYesYes
Battery, power & lifetime
Power consumption195 W—
Light source life20,000 h30,000 h
Light source life (eco mode)30,000 h—
Design & noise
Fan noise—33 dB
Fan noise (eco mode)28 dB28 dB
Weight3.4 kg3.4 kg
Width286 mm238 mm
Height216 mm130 mm
Depth115 mm215 mm
ColoursWhiteBlack
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