Casio XJ-M251 vs NEC NP-V311W
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
| Casio XJ-M251 | NEC NP-V311W MSRP $1,179 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | DLP |
| Number of imaging devices | — | 1 |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| Native aspect ratio | 16:10 | 16:10 |
| Native resolution | 1280 × 800 | 1280 × 800 |
| Colour wheel segments | — | 6 segments |
| Optics | ||
| Throw ratio | 1.32–1.93:1 | 1.55–1.7:1Derived |
| Projection distance table | 35″: 1–1.5 m · 40″: 1.1–1.7 m · 60″: 1.7–2.5 m · 80″: 2.3–3.4 m · 100″: 2.9–4.2 m · 150″: 4.3–6.3 m · 200″: 5.8–8.4 m · 300″: 8.7–12.6 m | 30″: 1–1.1 m · 40″: 1.34–1.46 m · 60″: 2–2.2 m · 70″: 2.34–2.56 m · 80″: 2.67–2.93 m · 90″: 3–3.29 m · 100″: 3.34–3.66 m · 120″: 4–4.39 m · 150″: 5.01–5.49 m · 180″: 6.01–6.59 m · 200″: 6.67–7.32 m · 240″: 8.01–8.78 m · 270″: 9.01–9.88 m · 300″: 10.01–10.98 m |
| Zoom type | Optical | Optical |
| Zoom ratio | 1.5× | 1.1× |
| Focus | Manual | Manual |
| Fixed offset | 83% | 12.5%Derived |
| Focal length | — | 21.9–24 mm |
| F-number | — | 2.5–2.67 |
| Image size range | 35–300 in | 30–300 in |
| Vertical keystone | -30–30° | -40–40° |
| Light source | ||
| Light source type | Hybrid laser + LED | Lamp |
| Light source detail | Blue laser and phosphor combined with a red LED | High-pressure mercury lamp, 225 W AC (170 W in ECO ON); replacement lamp NP18LP |
| Lamp wattage | — | 225 W |
| Light source life | Normal: 20,000 h | Normal: 3,000 h · Eco: 5,000 h |
| Life definition | Unspecified | — |
| Warm-up time | 5 s | 7 s |
| Cool-down time | — | 0 s |
| Light-source dimming | — | Manual steps |
| Brightness | ||
| ISO light output | — | 3,100 lm |
| Claimed brightness (non-standard) | 3,000 | — |
| Claimed brightness unit | Unspecified | — |
| Contrast & black level | ||
| Native on/off contrast | — | 3,000:1 |
| Dynamic contrast | 1,800:1 | — |
| Colour | ||
| Bit depth / 'number of colours' | 24 bitDerived | 24 bitDerived |
| Calibration & picture control | ||
| Picture mode memories | — | 6 |
| Audio | ||
| Speaker power | 5 W | 7 W |
| Speaker count | 1Derived | 1 |
| Audio channels | Mono | Mono |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | 1600 × 1200 | 1920 × 1080 |
| HDMI port count | 1 | 1 |
| HDMI ports (feature-level) | — | HDMI IN: HDMI |
| Audio input terminals | Rca, 3.5 mm | 3.5 mm, Rca |
| Horizontal scan frequency | 31.5–91.1 kHz | 15–100 kHz |
| Vertical scan frequency | 56–85 Hz | 50–120 Hz |
| VGA input | Yes | Yes |
| RS-232 | Yes | Yes |
| LAN control | NoDerived | Yes |
| Control ecosystem drivers | Crestron | Crestron |
| Wi-Fi | NoneDerived | — |
| Ethernet | NoDerived | Yes |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | — | DLP-Link |
| 3D formats | Frame sequential | Frame sequential, Top-bottom |
| Glasses included | 0 | — |
| Setup automation | ||
| Auto keystone | Yes | — |
| Acoustic noise | ||
| Fan noise (sound pressure) | — | Normal: 37 dB(A) · Eco: 33 dB(A) |
| Environment & power | ||
| Operating temperature | 5–35°CDerived | 5–40°C |
| Operating humidity | 20–80%RH | 20–80%RH |
| Altitude / high-altitude mode | 3,000 m | 3,600 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Ceiling, Rear | Table, Ceiling, Rear |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption (max) | 180 W | 278 W |
| Power consumption by mode | Eco off bright: 180 W · Eco 1: 145 W | Normal 100 130v: 278 W · Normal 200 240v: 268 W · Eco 100 130v: 216 W · Eco 200 240v: 210 W · Standby normal 100 130v: 3 W · Standby normal 200 240v: 4 W · Standby power saving 100 130v: 0.4 W · Standby power saving 200 240v: 0.5 W |
| Standby power | 0.12 W | 0.4 W |
| Power supply | — | Internal |
| Physical & installation | ||
| Width | 311 mmDerived | 310 mm |
| Depth | 244 mmDerived | 247 mm |
| Height | 84.1 mmDerived | 95 mm |
| Weight | 3.9 kgDerived | 2.5 kg |
| Exhaust / intake direction | — | Front |
| Colours / finishes | White | — |
| Mount hole pattern | Thread: M3 · Count: 3 · Insert depth mm: 5–7 | — |
| Safety & compliance | ||
| Safety & market certifications | — | UL, FCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr | — |
| Light-source warranty | 3 years or 6,000 hours, whichever comes first | — |
| User manual | https://www.projectorcentral.com/pdf/projector_manual_8251.pdf | https://sharp-displays.jp.sharp/support/webdl/dl_service/data/manual/en/v311w/V311W_manual_ENG_v2.pdf |
| In the box | ||
| Box contents | Remote control, Vga cable, Power cord, Setup guide | Projector, Lens cap, Power cord, Vga cable, Remote, Batteries, User manual cd, Quick start guide, Warranty card |
| Remote type | — | IR |
| 3D glasses in box | 0 | — |