ProjectorDB

BenQ TH685P vs Optoma UHD38x

BenQ TH685P is $250 cheaper and lighter. Optoma UHD38x is brighter, better for gaming and quieter.

BenQ TH685PMSRP $749
Optoma UHD38x$999 · Amazon
Buy
Key differences
White light outputANSI
3,500 lm ANSI4,000 lm ANSIPreliminary
Throw ratio
1.13–1.46:11.5–1.66:1
Lowest input lag
8.3 msDerived4.2 msDerived
Fan noise
Normal 35 dB(A) · Eco 29 dB(A)Normal 28 dB(A) · Eco 26 dB(A)
MSRP
$749—
Best price
—$999
Room fit
Distance to screen
2.5–3.2 m3.3–3.7 m
Picture
White light outputANSI
3,500 lm ANSI4,000 lm ANSIPreliminary
Claimed brightness (non-standard)
—4,000 lm
Brightness uniformity
—80%
Imaging technology
DLPDLP
Chip / panel diagonal
0.48 in0.47 in
Native resolution
1080p (1920 × 1080)1080p (1920 × 1080)
Native aspect
16:9Derived16:9Derived
Addressable resolution
—4K UHD (3840 × 2160)
Colour wheel segments
6—
Colour wheel speed
2×—
Dynamic contrast
10,000:11,000,000:1
Colour gamut
Rec. 709 95% coverage—
Colour bit depth (per channel)
10 bit—
Gamma / EOTF presets
2.2, 2.4, 2.62.2, 2.4
Colour temperature presets
Native, CustomD93, D65, D55, Native
HDR formats
HDR10, HLGHDR10, HLG
Colour management (CMS)
6-axis6-axis
Picture mode memories
2—
Picture certifications
—ISF
3D
YesYes
3D formats
Frame packing, Side-by-side, Top-bottom, Frame sequentialFrame packing
Light source
Light source
LampLamp
Lamp power
245 W240 W
Replacement lamp
5J.JKX05.001—
Light-source life
4,000 h normal · 10,000 h eco · 15,000 h super eco · 8,000 h dynamic4,000 h max · 10,000 h eco · 15,000 h dynamic
Warm-up time
30 s—
Cool-down time
90 s90 s
Optics
Throw ratio
1.13–1.46:11.5–1.66:1
Image size
30–300 in33–300 in
Projection offset
105%105%
Zoom
OpticalOptical
Zoom ratio
1.3×Derived1.11×Derived
Focal length
11.9–15.5 mm15.84–17.42 mm
Aperture (f-number)
1.94–2.071.98–2.02
Focus
ManualManual
Autofocus
—No
Vertical lens shift
±5%None
Motorised lens shift
No—
Vertical keystone
40°40°
Horizontal keystone
—40°
Auto keystone
Yes—
Grid warp
—Yes
Motion & gaming
Max input refresh
1080p: 120 Hz1080p: 240 Hz · 4K UHD: 60 Hz
Input lag
1080p: 60 Hz 16.7 ms · 120 Hz 8.3 ms · 4K UHD: 60 Hz 33.4 ms1080p: 240 Hz 4.2 ms
Inputs & control
HDMI inputs
2 × HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0 (HDCP 2.2)
Other video inputs
None—
Max input resolution
4K UHDDCI 4K
Audio inputs
3.5 mm—
Control ports
RS-232RS-232, 12 V trigger
Horizontal scan
15–102 kHz31–135 kHz
Vertical scan
23–120 Hz24–120 Hz
Smart platform
Smart platform
None—
Audio
Speaker power
5 W10 W
Speakers
11
Layout
Mono—
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
312 × 225 × 110 mm315 × 270 × 118 mm
Weight
2,790 g3,980 g
Colours
—White
Orientations
Table, Ceiling, RearTable, Ceiling, Rear
Ceiling mount
M4, 20–25 mm screws—
Environment & power
Operating temperature
0–40°C5–40°C
Operating humidity
10–90%RH10–85%RH
Altitude
3,000 m · high-altitude mode3,000 m · high-altitude mode
Power draw
Max 340 W · Normal 297 W · Eco 206 WMax 305 W · Eco 220 W
Standby
Up to 0.5 W0.5 W
Power supply
—Built in
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Normal 35 dB(A) · Eco 29 dB(A)Normal 28 dB(A) · Eco 26 dB(A)
Safety & support
Risk group
RG2RG2
Marks
—FCC
Warranty
3 yr (light source 1 yr or 2,000 h)1 yr (light source 3 mo)
User manual
https://esupportdownload.benq.com/esupport/PROJECTOR/UserManual/TH685P/TH685P_UM_EN_230605154000.pdfhttps://region-resource.optoma.com/products/import/Documents/13cdc4ab-4017-4930-a4fd-d023d407c4fe.pdf
Spare parts
Lamp 5J.JKX05.001—
In the box
In the box
Power cord, Remote, Remote batteries, Quick start guide, Warranty cardPower cord, Remote, Remote batteries, User manual
Remote
IRBacklit
BenQ TH685PMSRP $749
Optoma UHD38x$999 · Amazon
Buy