Promethean UST-P3 vs ViewSonic LS625W
| Promethean UST-P3 $49 |  MSRP $1,389 | |
|---|---|---|
| Key differences | ||
| White light output | — | 3,200 lm ANSI |
| Throw ratio | 0.35:1 | 0.52:1 |
| Light source | Lamp | Laser (phosphor) |
| Fan noise | — | Normal 34 dB(A) · Eco 30 dB(A) |
| Price | $49 | MSRP $1,389 |
| Room fit | ||
| Distance to screen | 0.75 m | 1.1 m |
| Brightness | ||
| Rated brightness | — | 3,200 lmDerived |
| White light output | — | 3,200 lm ANSI |
| Claimed brightness (non-standard) | 3,150 lm | — |
| Display system | ||
| Imaging technology | DLP | DLP |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| On-screen resolution | WXGA (1280 × 800)Derived | WXGA (1280 × 800)Derived |
| Native resolution | WXGA (1280 × 800) | WXGA (1280 × 800) |
| Native aspect | 16:10Derived | 16:10Derived |
| Contrast | ||
| Dynamic contrast | Up to 2,300:1 | 100,000:1 |
| Colour | ||
| Colour bit depth (per channel) | — | 10 bit |
| Gamma / EOTF presets | 2.2, 2.4 | — |
| Calibration | ||
| Colour management (CMS) | 6-axis | 6-axis |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | Frame packing, Side-by-side, Top-bottom, Frame sequential | Frame packing, Side-by-side, Top-bottom, Frame sequential |
| Light source | ||
| Light source | Lamp | Laser (phosphor) |
| Emitter | — | Blue laser + phosphor |
| Lamp power | 240 W | — |
| Light-source life | 5,000 h normal · 8,000 h eco | 20,000 h normal · 20,000 h dynamic |
| Light output control | — | Steps |
| Optics | ||
| Throw ratio | 0.35:1 | 0.52:1 |
| Image size | 80–100 in | 70–100 in |
| Zoom | Digital | None |
| Focus | Manual | Manual |
| Autofocus | No | — |
| Vertical lens shift | — | None |
| Horizontal lens shift | — | None |
| Vertical keystone | 40° | 40° |
| Horizontal keystone | — | 40° |
| Interchangeable lens | No | No |
| Inputs & control | ||
| HDMI inputs | 2 × HDMI | 2 × HDMI 1.4 (HDCP 1.4) |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | — | HDMI 1.4Derived |
| Other video inputs | VGA | VGA, + Composite |
| Max input resolution | 4K UHD | WUXGA |
| Audio inputs | 3.5 mm | 3.5 mm |
| Control ports | RS-232 | RS-232, + 12 V trigger |
| Control-system drivers | Crestron | Crestron, + AMX |
| Horizontal scan | 15–91.4 kHz | 15–102 kHz |
| Vertical scan | 24–120 Hz | 23–120 Hz |
| Smart platform | ||
| Ethernet | Yes | Yes |
| Audio | ||
| Speaker power | 20 W | 20 W |
| Speakers | 2 | 2 |
| Layout | Stereo | Stereo |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 288 × 375 × 168 mm | 383 × 291 × 147 mm |
| Weight | 4,800 g | 6,200 g |
| Colours | Black | — |
| Orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Ceiling mount | M4, 12 mm screws | 4 × M4, screws ≤ 8 mm |
| Sealed optical engine | — | Yes |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–85%RH | 0–90%RH |
| Altitude | — | 3,000 m · high-altitude mode |
| Power draw | Max 330 W | 305 W |
| Standby | Up to 0.5 W | Up to 0.5 W |
| Mains input | 100–240 V | 100–240 V · 50/60 Hz |
| Noise | ||
| Fan noise | — | Normal 34 dB(A) · Eco 30 dB(A) |
| Safety & compliance | ||
| Risk group | RG1 | — |
| Marks | + CE, FCC, + UL, + CCC | FCC |
| Support & ownership | ||
| Warranty | — | 3 yr |
| 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/LS625X_LS625W/LS625X_LS625W_UG_ENG.pdf |
| In the box | ||
| In the box | Power cord, Remote, + Remote batteries, Quick start guide, + HDMI cable, VGA cable | Power cord, Remote, Quick start guide, VGA cable |
| Remote | IR | IR |