Epson PowerLite E20 vs ViewSonic LS625X

	Epson PowerLite E20 $469	ViewSonic LS625X MSRP $1,199
Key differences
White light output	3,400 lm ISO (Max power)	3,200 lm ANSI
Throw ratio	1.44:1	0.49:1
Light source	Lamp	Laser (phosphor)
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	—
Price	$469	MSRP $1,199
Room fit80″100″120″150″
Distance to screen	2.9 m	1.00 m
Brightness
Rated brightness	3,400 lmDerived	3,200 lmDerived
White light output	3,400 lm ISO (Max power)	3,200 lm ANSI
Colour light output	3,400 lm (Normal power)	—
Brightness by mode	Max 3,400 lm · Eco 2,200 lm	—
Eco brightness	65%Derived	—
Display system
Imaging technology	3LCD	DLP
Chip / panel diagonal	0.55 in	—
On-screen resolution	1024 × 768Derived	1024 × 768Derived
Native resolution	1024 × 768	1024 × 768
Native aspect	4:3Derived	4:3Derived
Contrast
Dynamic contrast	15,000:1	—
Colour
Colour bit depth (per channel)	10 bitDerived	10 bit
Light source
Light source	Lamp	Laser (phosphor)
Emitter	—	Blue laser + phosphor
Lamp power	210 W	—
Light-source life	6,000 h normal · 12,000 h eco	20,000 h normal · 20,000 h dynamic
Light output control	—	Steps
Cool-down time	0 s	—
Optics
Throw ratio	1.44:1	0.49:1
Image size	30–350 in	60–300 in
Zoom	Digital	None
Focal length	16.7 mm	—
Aperture (f-number)	1.44	—
Focus	Manual	Manual
Autofocus	No	—
Vertical lens shift	—	None
Horizontal lens shift	—	None
Vertical keystone	30°	40°
Horizontal keystone	30°	—
Auto keystone	No	—
Corner correction	4-corner	—
Interchangeable lens	—	No
Inputs & control
HDMI inputs	HDMI	—
HDMI inputs (count)	1Derived	—
Other video inputs	VGA	VGA, + Composite
Max input resolution	—	1080p
Audio inputs	3.5 mm, + RCA	3.5 mm
USB media playback	No	—
Control ports	RS-232	RS-232, + 12 V trigger
Control-system drivers	—	Crestron, AMX
Horizontal scan	—	15–102 kHz
Vertical scan	—	23–120 Hz
Smart platform
Wi-Fi	None	—
Ethernet	No	Yes
Audio
Speaker power	5 W	10 W
Speakers	1	1
Layout	Mono	Mono
Audio outputs	3.5 mm	3.5 mm
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)	302 × 249 × 92 mm	383 × 291 × 147 mm
Weight	2,700 g	6,200 g
Colours	White	—
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Ceiling mount	M4, 9 mm screws	4 × M4, screws ≤ 8 mm
Dust filter	Replaceable	—
Sealed optical engine	—	Yes
Environment & power
Operating temperature	5–40°C	0–40°C
Operating humidity	20–80%RH	0–90%RH
Altitude	3,048 m · high-altitude mode	3,000 m · high-altitude mode
Power draw	Normal 345 W · Eco 235 W	305 W
Standby	0.3 W	Up to 0.5 W
Mains input	100–240 V · 50/60 Hz	—
Noise
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	—
Safety & compliance
Marks	FCC, + UL	FCC
Support & ownership
Warranty	🇺🇸 US 2 yr (light source 3 mo) · 🇨🇦 CA 2 yr · 🇪🇺 EU 3 yr	3 yr
User manual	https://files.support.epson.com/docid/cpd5/cpd59679.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS625X_LS625W/LS625X_LS625W_UG_ENG.pdf
In the box
In the box	Power cord, Remote, + Remote batteries, Quick start guide, + Warranty card, + HDMI cable, + Software CD	Power cord, Remote, Quick start guide, + VGA cable
Remote	—	IR