12.4 in 3.4 in  | 11.73 in 3.8 in  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Dell 1220 |  Optoma S331 | |
|---|---|---|
| Projector type | DLP | DLP |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| DVI in | no | no |
| HDMI | yes | yes |
| HDMI version | 1.4a | 1.4a |
| Number of HDMI inputs | 1 | 2 |
| USB | yes | yes |
| USB 2.0 | 1 | 1 |
| VGA in | yes | yes |
| AC (power) input | yes | yes |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Design type | Desktop projector | Desktop projector |
| Portable | yes | yes |
| Colour of product | Black | Black |
| Built-in display | no | no |
| Cable lock slot | yes | yes |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Noise level | < 34 | < 29 |
| Noise level (economic mode) | 31.0 dB | 29.0 dB |
| Operating relative humidity (H-H) | 0 - 80 | 0 - 85 |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Width | 12.4 in | 11.73 in |
| Height | 3.4 in | 3.8 in |
| Depth | 8.8 in | 9.06 in |
| Weight | 5.29 lb | 4.78 lb |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Focal length range (f-f) | 21.8 - 24 | 21.85 - 24.01 |
| Throw ratio | 1.95 - 2.15 | 1.94 - 2.16 |
| Optical zoom | 1.1 x | 1.1 x |
| Focus | Manual | Manual |
| Aperture range (F-F) | 2.41 - 2.55 | 2.4 - 2.53 |
| Zoom type | Manual | Manual |
| Projection distance | 1.2 - 10 | 1 - 12 |
| Matrix size | 0.55 | 0.55 |
| Offset | 115.0 % | 115.0 % |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Type of lamp | OSRAM | Bulb |
| Lamp life max (normal) | 5000.0 h | 5000.0 h |
| Lamp life max (eco) | 6000.0 h | 10000.0 h |
| Bulb power | 190.0 W | 195.0 W |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Screen size compatibility | 27.5 - 252.4 | 27.78 - 304.4 |
| Resolution | 800 x 600 px | 800 x 600 px |
| Number of colours | 1.073 billion colours | 1.07 billion colours |
| Native aspect ratio | 4:3 | 4:3 |
| Aspect ratio | 4:3 |
|
| Brightness (max) | 2700.0 lm | 3200.0 lm |
| Contrast ratio | 2200:1 | 22000:1 |
| Video formats supported |
|
|
| Vertical synchronization (max) | 119.9 kHz | 0.09 kHz |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Handheld remote control | yes | yes |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Ethernet connection | no | no |
| Wireless network (Wi-Fi) | no | no |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| 3D support (3D-Ready) | no | yes |
| HD ready | yes | yes |
| Full HD (HD ready 1080p) | yes | no |
| HDR | no | no |
| Analog signal format system |
|
|
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Built-in speakers | yes | yes |
| Number of built-in speakers | 1 | 1 |
| RMS rated power | 2.0 W | 2.0 W |
| Dell 1220 | Optoma S331 | |
|---|---|---|
| Power consumption (typical) | 230.0 W | 225.0 W |
| Power consumption (standby) | 0.5 W | 0.5 W |
| Pros | ||
|---|---|---|
| Cons |
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