BenQ TH671ST vs TH575: Which Projector Is Better? - RTINGS.com

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Tested using Methodology v1.0

Updated Sep 16, 2026 04:42 PM

Tested using Methodology v1.0

Updated Aug 07, 2026 02:25 PM

BenQ TH671ST Picture

BenQ TH575 Picture

Native Resolution 1080p

Projector Type Short Throw

Light Source Lamp

Native Resolution 1080p

Projector Type Standard Throw

Light Source Lamp

Recommended in 1 article:
Short-Throw

Our Verdict

BenQ TH671ST

BenQ TH575

The BenQ TH671ST is a bit better than the BenQ TH575, but you might prefer the latter based on what you prioritize. The TH575 is brighter and has vastly better contrast, so it does project a more striking image at times. However, the TH671ST is much more accurate and has better color volume, so more colorful content looks more vibrant and natural on that unit.

Variants

TH671ST (White)

TH575 (White)

Review

See BenQ TH671ST Review

See BenQ TH575 Review

Check Price

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

Main Differences for

Home Theater

Threshold

0.10

Home Theater

0.0

0.0

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Full Comparison

Home Theater

0.0

0.0

Outdoors

0.0

0.0

Bedroom

0.0

0.0

Gaming

0.0

0.0

Brightness

0.0

0.0

Contrast

0.0

0.0

Portability

0.0

0.0

Color

0.0

0.0

Gaming Responsiveness

0.0

0.0

Picture Quality

Brightness

N/A

N/A

Brightness Measurement Picture

BenQ TH671ST Brightness Measurement Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Brightness Measurement Picture Sample

SAMPLE

for pictures & test results

White Light Output

Lock lm

Lock lm

Color Light Output

Lock lm

Lock lm

Screen Brightness

Lock cd/m²

Lock cd/m²

Effective Contrast

N/A

N/A

APL Native Contrast

BenQ TH671ST APL Native Contrast Sample

SAMPLE

for pictures & test results

BenQ TH575 APL Native Contrast Sample

SAMPLE

for pictures & test results

0.1% APL Native Contrast

Lock : 1

Lock : 1

0.5% APL Native Contrast

Lock : 1

Lock : 1

1% APL Native Contrast

Lock : 1

Lock : 1

5% APL Native Contrast

Lock : 1

Lock : 1

10% APL Native Contrast

Lock : 1

Lock : 1

15% APL Native Contrast

Lock : 1

Lock : 1

25% APL Native Contrast

Lock : 1

Lock : 1

50% APL Native Contrast

Lock : 1

Lock : 1

Native Full-On/Full-Off Contrast

Lock : 1

Lock : 1

Full-On/Full-Off Contrast

Lock : 1

Lock : 1

Average White Light Measurement

Lock lm

Lock lm

Average Black Floor Measurement

Lock lm

Lock lm

Pre-Calibration Color Accuracy

N/A

N/A

Pre White Balance Picture

BenQ TH671ST Pre White Balance Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Pre White Balance Picture Sample

SAMPLE

for pictures & test results

Pre Gamma Curve Picture

BenQ TH671ST Pre Gamma Curve Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Pre Gamma Curve Picture Sample

SAMPLE

for pictures & test results

Pre Color Picture

BenQ TH671ST Pre Color Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Pre Color Picture Sample

SAMPLE

for pictures & test results

White Balance dE 2000

Lock

Lock

Color dE 2000

Lock

Lock

Gamma

Lock

Lock

Color Temperature

Lock K

Lock K

Picture Mode

Locked

Locked

Color Temp Setting

Locked

Locked

Gamma Setting

Locked

Locked

Post-Calibration Color Accuracy

N/A

N/A

Post White Balance Picture

BenQ TH671ST Post White Balance Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Post White Balance Picture Sample

SAMPLE

for pictures & test results

Post Gamma Curve Picture

BenQ TH671ST Post Gamma Curve Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Post Gamma Curve Picture Sample

SAMPLE

for pictures & test results

Post Color Picture

BenQ TH671ST Post Color Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Post Color Picture Sample

SAMPLE

for pictures & test results

White Balance dE 2000

Lock

Lock

Color dE 2000

Lock

Lock

Gamma

Lock

Lock

Color Temperature

Lock K

Lock K

Picture Mode

Locked

Locked

White Balance Calibration

Locked

Locked

Color Calibration

Locked

Locked

Color Volume

N/A

N/A

CIELAB DCI-P3 Picture

BenQ TH671ST CIELAB DCI-P3 Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 CIELAB DCI-P3 Picture Sample

SAMPLE

for pictures & test results

CIELAB DCI-P3 Coverage

Lock%

Lock%

CIELAB BT.2020 Picture

BenQ TH671ST CIELAB BT.2020 Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 CIELAB BT.2020 Picture Sample

SAMPLE

for pictures & test results

CIELAB BT.2020 Coverage

Lock%

Lock%

Motion

Judder

N/A

N/A

Stitch Pictures

BenQ TH671ST Stitch Pictures Sample

SAMPLE

for pictures & test results

BenQ TH575 Stitch Pictures Sample

SAMPLE

for pictures & test results

De-Judder Resolution Impact

Locked

Locked

Judder-Free 24p

Locked

Locked

Judder-Free 25p

Locked

Locked

Judder-Free 24p via 60p

Locked

Locked

Judder-Free 25p via 60p

Locked

Locked

Judder-Free 24p via Native Apps

N/A

N/A

Judder-Free 25p via Native Apps

N/A

N/A

Rainbow Effect

N/A

N/A

RBE Video

BenQ TH671ST RBE Video Sample

SAMPLE

for videos & test results

BenQ TH575 RBE Video Sample

SAMPLE

for videos & test results

Color Flash Sequence

BenQ TH671ST Color Flash Sequence Sample

SAMPLE

for pictures & test results

BenQ TH575 Color Flash Sequence Sample

SAMPLE

for pictures & test results

RBE Reduction Mode

Locked

Locked

Color Flashes Per Second

Lock

Lock

Design

Size

N/A

N/A

Dimension Picture

BenQ TH671ST Dimension Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Dimension Picture Sample

SAMPLE

for pictures & test results

Height

Lock" (Lock cm)

Lock" (Lock cm)

Width

Lock" (Lock cm)

Lock" (Lock cm)

Depth

Lock" (Lock cm)

Lock" (Lock cm)

Weight

Lock lbs (Lock kg)

Lock lbs (Lock kg)

Volume

Lock in³ (Lock cm³)

Lock in³ (Lock cm³)

Additional Carrying Features

N/A

N/A

Carrying Picture

BenQ TH671ST Carrying Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Carrying Picture Sample

SAMPLE

for pictures & test results

Carrying Case Picture

BenQ TH671ST Carrying Case Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Carrying Case Picture Sample

SAMPLE

for pictures & test results

Carrying Handle

Locked

Locked

Lens Protection

Locked

Locked

Carrying Case

Locked

Locked

Physical Setup Flexibility

N/A

N/A

Style Picture

BenQ TH671ST Style Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Style Picture Sample

SAMPLE

for pictures & test results

Mounting Holes Picture

BenQ TH671ST Mounting Holes Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Mounting Holes Picture Sample

SAMPLE

for pictures & test results

Optical Zoom

Locked

Locked

Projector Type

Locked

Locked

Minimum Throw Ratio

Lock

Lock

Maximum Throw Ratio

Lock

Lock

Horizontal Lens Shift

N/A

N/A

Vertical Lens Shift

N/A

N/A

Body Adjustment

Locked

Locked

Mounting Holes

Locked

Locked

Imaging

Imaging Technology

Locked

Locked

Native Resolution

Locked

Locked

Aspect Ratio

Locked

Locked

Light Source

Locked

Locked

Spectral Power Distribution

BenQ TH671ST Spectral Power Distribution Sample

SAMPLE

for pictures & test results

BenQ TH575 Spectral Power Distribution Sample

SAMPLE

for pictures & test results

Battery

N/A

N/A

Battery Life

N/A

N/A

Charge Time

N/A

N/A

Power Source

Locked

Locked

Fan Noise

N/A

N/A

Noise @ Maximum Brightness Video

BenQ TH671ST Noise @ Maximum Brightness Video Sample

SAMPLE

for videos & test results

BenQ TH575 Noise @ Maximum Brightness Video Sample

SAMPLE

for videos & test results

Noise @ Maximum Brightness

LockdBA

LockdBA

Inputs

Inputs & Connectivity

HDMI

Locked

Locked

HDMI 2.1 Rated Speed

Locked

Locked

USB Data Ports

Lock

Lock

Audio Out 3.5mm

Locked

Locked

Digital Optical Audio Out

Locked

Locked

Bluetooth

Locked

Locked

Wi-Fi

Locked

Locked

Ethernet Speed

Locked

Locked

Supported Resolutions

N/A

N/A

4k @ 60Hz

Locked

Locked

4k @ 120Hz

Locked

Locked

1440p @ 60Hz

Locked

Locked

1440p @ 120Hz

Locked

Locked

1080p @ 60Hz

Locked

Locked

1080p @ 60Hz @ 4:4:4

Locked

Locked

1080p @ 120Hz

Locked

Locked

1080p Maximum Refresh Rate

Lock Hz

Lock Hz

Variable Refresh Rate

VRR

Locked

Locked

Input Lag

N/A

N/A

4k @ 60Hz

N/A

N/A

4k @ 60Hz Outside Game Mode

N/A

N/A

4k @ 120Hz

N/A

N/A

1080p @ 60Hz

Lock ms

Lock ms

1080p @ 60Hz Outside Game Mode

Lock ms

Lock ms

1080p @ 120Hz

N/A

N/A

1080p @ Max Refresh Rate

Lock ms

Lock ms

HDR Format Support

HDR10

Locked

Locked

HDR10+

Locked

Locked

Dolby Vision

Locked

Locked

HLG

Locked

Locked

Audio Passthrough

ARC/eARC

Locked

Locked

eARC: Dolby Atmos Over Dolby Digital Plus

Locked

Locked

eARC: Dolby Digital Plus 7.1

Locked

Locked

eARC: LPCM 7.1 Over Dolby MAT

Locked

Locked

eARC: Dolby TrueHD 7.1

Locked

Locked

eARC: DTS:X Over DTS-HD MA

Locked

Locked

eARC: DTS-HD Master Audio 7.1

Locked

Locked

eARC: LPCM Channels (Bitstream)

Locked

Locked

ARC: Dolby Digital 5.1

Locked

Locked

ARC: DTS 5.1

Locked

Locked

Optical: Dolby Digital 5.1

Locked

Locked

Optical: DTS 5.1

Locked

Locked

3D

3D Support

Locked

Locked

Features

In The Box

In The Box Picture

BenQ TH671ST In The Box Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 In The Box Picture Sample

SAMPLE

for pictures & test results

Smart Features & Sound

Interface Picture

BenQ TH671ST Interface Picture Sample

SAMPLE

for pictures & test results

BenQ TH575 Interface Picture Sample

SAMPLE

for pictures & test results

Smart OS

Locked

Locked

Cast Capable

Locked

Locked

Speaker(s)

Locked

Locked

Remote-Free Operation

Locked

Locked

Screen Adaptation

N/A

N/A

Focus

Locked

Locked

Vertical Keystone

Locked

Locked

Horizontal Keystone

Locked

Locked

Post-Movement Auto-Correction

Locked

Locked

Obstacle Avoidance

Locked

Locked

Auto Screen Fit

Locked

Locked

Check Price

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

White

TH671ST

White

TH575

BenQ TH671ST

BenQ TH575

Comments

Comparison

• Posted 4 months ago

BenQ TH671ST vs BenQ TH575: Main Discussion

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