Promethean UST-P3 vs ViewSonic PS502X

Promethean UST-P3 is $30 cheaper and sharper. ViewSonic PS502X is lighter.

Key differences
White light output
—4,000 lm ANSI
Native resolution
WXGA (1280 × 800)1024 × 768
Throw ratio
0.35:10.62:1
MSRP
$499$529
Room fit
Distance to screen
0.75 m1.3 m
Picture
White light output
—4,000 lm ANSI
Claimed brightness (non-standard)
3,150 lm—
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in—
Native resolution
WXGA (1280 × 800)1024 × 768
Native aspect
16:10Derived4:3Derived
Dynamic contrast
Up to 2,300:115,000:1
Colour bit depth (per channel)
—10 bit
Gamma / EOTF presets
2.2, 2.4—
Colour management (CMS)
6-axis—
3D
YesYes
3D formats
Frame packing, Side-by-side, Top-bottom, Frame sequentialFrame packing, Side-by-side, Top-bottom, Frame sequential
3D glasses sync
—DLP-Link
Light source
Light source
LampLamp
Lamp power
240 W240 W
Replacement lamp
—RLC-128
Light-source life
5,000 h normal · 8,000 h eco4,000 h normal · 12,000 h dynamic
Optics
Throw ratio
0.35:10.62:1
Image size
80–100 in60–300 in
Zoom
DigitalDigital
Focal length
—7.15 mm
Aperture (f-number)
—2.7
Focus
ManualManual
Autofocus
No—
Vertical keystone
40°19°
Auto keystone
—Yes
Interchangeable lens
No—
Inputs & control
HDMI inputs
2 × HDMI2 × HDMI 1.4 (HDCP 1.4)
Other video inputs
VGAVGA
Max input resolution
4K UHD1080p
Audio inputs
3.5 mm3.5 mm
USB media playback
—No
Control ports
RS-232RS-232
Control-system drivers
Crestron—
Horizontal scan
15–91.4 kHz15–102 kHz
Vertical scan
24–120 Hz23–120 Hz
Smart platform
Ethernet
Yes—
Audio
Speaker power
20 W16 W
Speakers
21
Layout
StereoMono
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
288 × 375 × 168 mm309 × 234 × 115 mm
Weight
4,800 g2,870 g
Colours
Black—
Orientations
Table, Ceiling, RearTable, Ceiling
Ceiling mount
M4, 12 mm screws—
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–85%RH10–80%RH
Altitude
—3,657 m · high-altitude mode
Power draw
Max 330 W295 W
Standby
Up to 0.5 W0.5 W
Power supply
—Built in
Mains input
100–240 V100–240 V · 50/60 Hz
Safety & support
Risk group
RG1—
Marks
CE, FCC, UL, CCC—
Warranty
—3 yr (light source 1 yr)
User manual
https://cdn.cs.1worldsync.com/55/fb/55fb8d82-0779-48d1-9c55-233622ca8bbd.pdf—
Spare parts
—Lamp RLC-128
In the box
In the box
Power cord, Remote, Remote batteries, Quick start guide, HDMI cable, VGA cablePower cord, Remote, Quick start guide
Remote
IR—