Promethean UST-P3 vs ViewSonic PS502W

Promethean UST-P3 is $80 cheaper. ViewSonic PS502W is lighter.

	Promethean UST-P3MSRP $499	ViewSonic PS502WMSRP $579

Key differences
White light output
White light output	—	4,000 lm ANSI
Throw ratio
Throw ratio	0.35:1	0.52:1
MSRP
MSRP	$499	$579
Room fit80″100″120″150″
Distance to screen
Distance to screen	0.75 m	1.1 m
Picture
White light output
White light output	—	4,000 lm ANSI
Claimed brightness (non-standard)
Claimed brightness (non-standard)	3,150 lm	—
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	—
Native resolution
Native resolution	WXGA (1280 × 800)	WXGA (1280 × 800)
Native aspect
Native aspect	16:10Derived	16:10Derived
Dynamic contrast
Dynamic contrast	Up to 2,300:1	15,000:1
Colour bit depth (per channel)
Colour bit depth (per channel)	—	10 bit
Gamma / EOTF presets
Gamma / EOTF presets	2.2, 2.4	—
Colour management (CMS)
Colour management (CMS)	6-axis	—
3D
3D	Yes	—
3D formats
3D formats	Frame packing, Side-by-side, Top-bottom, Frame sequential	—
Light source
Light source
Light source	Lamp	Lamp
Lamp power
Lamp power	240 W	—
Replacement lamp
Replacement lamp	—	RLC-128
Light-source life
Light-source life	5,000 h normal · 8,000 h eco	4,000 h normal · 12,000 h dynamic
Optics
Throw ratio
Throw ratio	0.35:1	0.52:1
Image size
Image size	80–100 in	60–300 in
Zoom
Zoom	Digital	Digital
Focal length
Focal length	—	7.51 mm
Aperture (f-number)
Aperture (f-number)	—	2.8
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	—
Vertical lens shift
Vertical lens shift	—	None
Horizontal lens shift
Horizontal lens shift	—	None
Vertical keystone
Vertical keystone	40°	19°
Auto keystone
Auto keystone	—	Yes
Interchangeable lens
Interchangeable lens	No	No
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI	2 × HDMI 1.4 (HDCP 1.4)
Other video inputs
Other video inputs	VGA	VGA
Max input resolution
Max input resolution	4K UHD	1080p
Audio inputs
Audio inputs	3.5 mm	3.5 mm
Control ports
Control ports	RS-232	RS-232
Control-system drivers
Control-system drivers	Crestron	—
Horizontal scan
Horizontal scan	15–91.4 kHz	15–102 kHz
Vertical scan
Vertical scan	24–120 Hz	23–120 Hz
Smart platform
Ethernet
Ethernet	Yes	—
Audio
Speaker power
Speaker power	20 W	16 W
Speakers
Speakers	2	1
Layout
Layout	Stereo	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)	288 × 375 × 168 mm	309 × 234 × 115 mm
Weight
Weight	4,800 g	2,870 g
Colours
Colours	Black	—
Orientations
Orientations	Table, Ceiling, Rear	—
Ceiling mount
Ceiling mount	M4, 12 mm screws	M4, screws ≤ 7 mm
Environment & power
Operating temperature
Operating temperature	0–40°C	0–40°C
Operating humidity
Operating humidity	10–85%RH	10–80%RH
Altitude
Altitude	—	3,657 m
Power draw
Power draw	Max 330 W	295 W
Standby
Standby	Up to 0.5 W	Up to 0.5 W
Mains input
Mains input	100–240 V	100–240 V · 50/60 Hz
Safety & support
Risk group
Risk group	RG1	—
Marks
Marks	CE, FCC, UL, CCC	—
Warranty
Warranty	—	3 yr
User manual
User manual	https://cdn.cs.1worldsync.com/55/fb/55fb8d82-0779-48d1-9c55-233622ca8bbd.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/projector/PA700S_PA700X_PA700W_PS502X_PS502W/PA700S_PA700X_PA700W_PS502X_PS502W_UG_ENG.pdf
Spare parts
Spare parts	—	Lamp RLC-128
In the box
In the box
In the box	Power cord, Remote, Remote batteries, Quick start guide, HDMI cable, VGA cable	Power cord, Remote, Remote batteries, Quick start guide, VGA cable
Remote
Remote	IR	—