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- H6815BD vs HD28e
Acer H6815BD vs Optoma HD28e
What H6815BD does better (8) and where HD28e wins (4) — every spec side by side.
Dimensions
Size comparison
H6815BDHD28e
| H6815BD | HD28e | Difference | |
|---|---|---|---|
| Height | 94 mm | 108 mm | −14 mm |
| Width | 322 mm | 316 mm | +6 mm |
| Depth | 225 mm | 244 mm | −19 mm |
| Weight | 2.9 kg | 2.5 kg | +0.4 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is H6815BD better than HD28e?
- Resolution (on screen)3840 × 2160 (4K UHD) vs 1920 × 1080 (Full HD)
- Brightness (ANSI / ISO lumens)4,000 lm vs 3,800 lm+5%
- Light source life5,000 h vs 4,000 h+25%
- HDR supportYes · HD28e: No
- HDMI inputs2 vs 12×
- Optical zoom2× vs 1.1×+82%
- HDMI version2 vs 1.4+43%
- Power consumption245 W vs 295 W+20%
Why is HD28e better than H6815BD?
- Built-in speakers (total output)3 W vs 5 W+67%
- Contrast ratio (dynamic / claimed)10,000:1 vs 30,000:13×
- Fan noise33 dB vs 25 dB+32%
- Weight2.88 kg vs 2.5 kg+15%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 1920 × 1080 (Full HD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | — |
| Display technology | DLP | DLP |
| Brightness (ANSI / ISO lumens) | 4,000 lm | 3,800 lm |
| Contrast ratio (dynamic / claimed) | 10,000:1 | 30,000:1 |
| HDR support | Yes | No |
| 3D playback | — | Yes |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Game / low-latency mode | — | Yes |
| Lens & placement | ||
| Throw ratio | 1.5:1 | 1.47:1 |
| Throw ratio (zoomed in) | 1.65:1 | 1.62:1 |
| Throw type | Standard throw (1.0:1 and longer) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 3.32 m | 3.25 m |
| Smallest image size | 28″ | 28″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | 2× | 1.1× |
| Lens shift | None | None |
| Autofocus | No | No |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 3 W | 5 W |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| Connectivity | ||
| HDMI inputs | 2 | 1 |
| HDMI version | 2 | 1.4 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | No |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 245 W | 295 W |
| Light source life | 5,000 h | 4,000 h |
| Light source life (eco mode) | 10,000 h | 10,000 h |
| Design & noise | ||
| Fan noise | 33 dB | 25 dB |
| Fan noise (eco mode) | 30 dB | — |
| Weight | 2.88 kg | 2.5 kg |
| Width | 322 mm | 316 mm |
| Height | 94 mm | 108 mm |
| Depth | 225 mm | 244 mm |
| Colours | White | White |
