Optoma 4K400STx vs Optoma 4K400x
 MSRP $3,499 | $1,399 | |
|---|---|---|
| Key differences | ||
| Native resolution | — | 1080p (1920 × 1080) |
| Throw ratio | 0.5:1 | 1.5–1.66:1 |
| Lowest input lag | 4 msDerived | 4.5 msDerived |
| Fan noise | Max 28 dB(A) · Normal 24 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Price | MSRP $3,499 | $1,399 |
| Room fit | ||
| Distance to screen | 1.1 m | 3.3–3.7 m |
| Brightness | ||
| Claimed brightness (non-standard) | 4,000 lm | 4,000 lm |
| Brightness uniformity | 80% | 80% |
| Display system | ||
| Imaging technology | DLP | DLP |
| Chip / panel diagonal | 0.65 in | 0.47 in |
| On-screen resolution | 4K UHD (3840 × 2160)Derived | 4K UHD (3840 × 2160)Derived |
| Native resolution | — | 1080p (1920 × 1080) |
| Native aspect | 16:9Derived | 16:9Derived |
| Pixel shift | XPR 4-way | — |
| Addressable resolution | 4K UHD (3840 × 2160) | 4K UHD (3840 × 2160) |
| Contrast | ||
| Dynamic contrast | 1,000,000:1 | 1,000,000:1 |
| Dynamic contrast method | Light-source dimming | Light-source dimming |
| Colour | ||
| Gamma / EOTF presets | 2.2, 2.4 | 2.2, 2.4 |
| Colour temperature presets | D93, D65, D55, Native | D93, D65, D55, Native |
| HDR | ||
| HDR formats | HDR10, HLG | HDR10, HLG |
| Tone mapping | Adjustable | Adjustable |
| Calibration | ||
| Colour management (CMS) | 6-axis | 6-axis |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | Frame packing | Frame packing |
| Light source | ||
| Light source | Lamp | Lamp |
| Lamp power | 240 W | 240 W |
| Light-source life | 4,000 h max · 10,000 h eco · 15,000 h dynamic | 4,000 h max · 10,000 h eco · 15,000 h dynamic |
| Cool-down time | 90 s | 90 s |
| Optics | ||
| Throw ratio | 0.5:1 | 1.5–1.66:1 |
| Image size | 36.43–301 in | 33–300 in |
| Projection offset | 116% | 105% |
| Zoom | None | Optical |
| Zoom ratio | — | 1.11×Derived |
| Focal length | 7.51 mm | 15.84–17.42 mm |
| Aperture (f-number) | 2.8 | 1.98–2.02 |
| Focus | Manual | Manual |
| Autofocus | — | No |
| Vertical keystone | 40° | 40° |
| Horizontal keystone | 40° | 40° |
| Corner correction | 4-corner | — |
| Grid warp | Yes | Yes |
| Motion & gaming | ||
| Max input refresh | 1080p: 240 Hz | 1080p: 240 Hz |
| Max refresh at 1080p | 240 HzDerived | 240 HzDerived |
| Input lag | 1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4 ms · 4K UHD: 60 Hz 16.7 ms | 1080p: 60 Hz 16.7 ms · 120 Hz 8.9 ms · 240 Hz 4.5 ms · 4K UHD: 60 Hz 16.7 ms |
| Lowest input lag | 4 msDerived | 4.5 msDerived |
| Input lag at 4K 60 Hz | 16.7 msDerived | 16.7 msDerived |
| Inputs & control | ||
| HDMI inputs | 2 × HDMI 2.0 | 2 × HDMI 2.0 (HDCP 2.2) |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | HDMI 2.0Derived | HDMI 2.0Derived |
| Max input resolution | DCI 4K | DCI 4K |
| Control ports | RS-232, 12 V trigger | RS-232, 12 V trigger |
| Horizontal scan | 31–135 kHz | 31–135 kHz |
| Vertical scan | 24–120 Hz | 24–120 Hz |
| Audio | ||
| Speaker power | 10 W | 10 W |
| Speakers | 1 | 1 |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 315 × 270 × 115 mm | 315 × 270 × 115 mm |
| Weight | 3,978 g | 4,200 g |
| Orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Environment & power | ||
| Operating temperature | 5–40°C | 5–40°C |
| Operating humidity | 10–80%RH | 10–85%RH |
| Altitude | 3,000 m | 3,000 m · high-altitude mode |
| Power draw | Max 320 W · Eco 220 W | Max 305 W · Eco 220 W |
| Standby | 0.5 W | 0.5 W |
| Mains input | 100–240 V · 50/60 Hz | 100–240 V · 50/60 Hz |
| Noise | ||
| Fan noise | Max 28 dB(A) · Normal 24 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Safety & compliance | ||
| Risk group | RG2 | RG2 |
| Marks | FCC | FCC |
| Support & ownership | ||
| Warranty | 2 yr | — |
| User manual | https://region-resource.optoma.com/products/import/Documents/5ba3a4c4-9910-4450-86ed-8d571c21506b.pdf | https://region-resource.optoma.com/products/import/Documents/13cdc4ab-4017-4930-a4fd-d023d407c4fe.pdf |
| In the box | ||
| In the box | Power cord, Remote, Remote batteries, User manual | Power cord, Remote, Remote batteries, User manual |
| Remote | Backlit | Backlit |