Epson BrightLink 770Fi vs Optoma 4K400STx

Optoma 4K400STx is $209 cheaper, quieter and lighter.

	Epson BrightLink 770Fi$2,498 · Amazon Buy	Optoma 4K400STx$2,289 · Amazon Buy

Key differences
White light output
White light output	4,100 lm ISO (Normal power)	—
Native resolution
Native resolution	1080p (1920 × 1080)	—
Throw ratio
Throw ratio	0.25–0.35:1	0.5:1
Lowest input lag
Lowest input lag	—	4 msDerived
HDR formats
HDR formats	—	HDR10, HLG
Light source
Light source	Laser (phosphor)	Lamp
Fan noise
Fan noise	Normal 37 dB(A) · Eco 27 dB(A)	Max 28 dB(A) · Normal 24 dB(A)
MSRP
MSRP	$2,637	$3,499
Best price
Best price	$2,498	$2,289
Room fit80″100″120″150″
Distance to screen
Distance to screen	0.55–0.77 m	1.1 m
Picture
White light output
White light output	4,100 lm ISO (Normal power)	—
Colour light output
Colour light output	4,100 lm (Normal power)	—
Claimed brightness (non-standard)
Claimed brightness (non-standard)	—	4,000 lm
Brightness uniformity
Brightness uniformity	—	80%
Brightness by mode
Brightness by mode	Normal 4,100 lm · Eco 2,800 lm	—
Eco brightness
Eco brightness	68%Derived	—
Imaging technology
Imaging technology	3LCD	DLP
Chip / panel diagonal
Chip / panel diagonal	0.62 in	0.65 in
Panel alignment
Panel alignment	Whole-image	—
Native resolution
Native resolution	1080p (1920 × 1080)	—
Native aspect
Native aspect	16:9Derived	16:9Derived
Pixel shift
Pixel shift	—	XPR 4-way
Addressable resolution
Addressable resolution	—	4K UHD (3840 × 2160)
Dynamic contrast
Dynamic contrast	Up to 2,500,000:1	1,000,000:1
Dynamic contrast method
Dynamic contrast method	—	Light-source dimming
Gamma / EOTF presets
Gamma / EOTF presets	—	2.2, 2.4
Colour temperature presets
Colour temperature presets	—	D93, D65, D55, Native
HDR formats
HDR formats	—	HDR10, HLG
Tone mapping
Tone mapping	—	Adjustable
Colour management (CMS)
Colour management (CMS)	—	6-axis
3D
3D	—	Yes
3D formats
3D formats	—	Frame packing
Light source
Light source
Light source	Laser (phosphor)	Lamp
Lamp power
Lamp power	—	240 W
Light-source life
Light-source life	20,000 h normal · 30,000 h eco	4,000 h max · 10,000 h eco · 15,000 h dynamic
Life defined as
Life defined as	50% brightness	—
Light output control
Light output control	Continuous	—
Constant brightness mode
Constant brightness mode	Yes	—
Cool-down time
Cool-down time	—	90 s
Optics
Throw ratio
Throw ratio	0.25–0.35:1	0.5:1
Image size
Image size	65–100 in	36.43–301 in
Projection offset
Projection offset	—	116%
Zoom
Zoom	Digital	None
Focal length
Focal length	3.7 mm	7.51 mm
Aperture (f-number)
Aperture (f-number)	1.6	2.8
Focus
Focus	Manual	Manual
Vertical keystone
Vertical keystone	3°	40°
Horizontal keystone
Horizontal keystone	3°	40°
Corner correction
Corner correction	4-corner	4-corner
Grid warp
Grid warp	Yes	Yes
Motion & gaming
Max input refresh
Max input refresh	—	1080p: 240 Hz
Input lag
Input lag	—	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4 ms · 4K UHD: 60 Hz 16.7 ms
Inputs & control
HDMI inputs
HDMI inputs	3 × HDMI	2 × HDMI 2.0
Other video inputs
Other video inputs	VGA, Composite	—
Max input resolution
Max input resolution	4K UHD	DCI 4K
Audio inputs
Audio inputs	3.5 mm, Microphone	—
Control ports
Control ports	RS-232	RS-232, 12 V trigger
Control-system drivers
Control-system drivers	Crestron	—
Horizontal scan
Horizontal scan	—	31–135 kHz
Vertical scan
Vertical scan	—	24–120 Hz
Smart platform
Wi-Fi
Wi-Fi	Wi-Fi 5	—
Ethernet
Ethernet	Yes	—
Casting
Casting	Miracast	—
Audio
Speaker power
Speaker power	16 W	10 W
Speakers
Speakers	—	1
Layout
Layout	Mono	—
Audio outputs
Audio outputs	3.5 mm	3.5 mm
HDMI audio return
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	356 × 395 × 133 mm	315 × 270 × 115 mm
Weight
Weight	6,000 g	3,978 g
Orientations
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Dust filter
Dust filter	Replaceable	—
Environment & power
Operating temperature
Operating temperature	0–40°C	5–40°C
Operating humidity
Operating humidity	20–80%RH	10–80%RH
Altitude
Altitude	3,048 m · high-altitude mode	3,000 m
Power draw
Power draw	Normal 277 W · Eco 208 W	Max 320 W · Eco 220 W
Standby
Standby	0.5 W	0.5 W
Networked standby
Networked standby	2 W	—
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Fan noise
Fan noise	Normal 37 dB(A) · Eco 27 dB(A)	Max 28 dB(A) · Normal 24 dB(A)
Safety & support
Laser class
Laser class	Class 1	—
Risk group
Risk group	—	RG2
Marks
Marks	FCC, UL	FCC
Warranty
Warranty	3 yr	2 yr
User manual
User manual	https://files.support.epson.com/docid/cpd6/cpd63110.pdf	https://region-resource.optoma.com/products/import/Documents/5ba3a4c4-9910-4450-86ed-8d571c21506b.pdf
Spare parts
Spare parts	Air filter V13H134A60 · Mount V12HA06A05	—
In the box
In the box
In the box	Power cord, Remote, Remote batteries, Quick start guide, USB cable	Power cord, Remote, Remote batteries, User manual
Remote
Remote	—	Backlit

Epson BrightLink 770Fi$2,498 · Amazon

Buy

Optoma 4K400STx$2,289 · Amazon

Buy