Comparison
AK800ST vs AK900ST
A side-by-side look at how the BenQ AK800ST and BenQ AK900ST compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.
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Specifications
The numbers, lined up.
Image
| Spec | AK800ST | AK900ST |
|---|---|---|
| Resolution | 4K UHD (3840×2160) | 4K UHD (3840×2160) |
| Lumens | 5,000 ANSI | 6,000 ANSI |
| Color | Golf, Bright Golf and HDR Golf picture modes | 97% Rec. 709; Golf, Bright Golf and HDR Golf picture modes |
- ResolutionAK800ST4K UHD (3840×2160)AK900ST4K UHD (3840×2160)
- LumensAK800ST5,000 ANSIAK900ST6,000 ANSI
- ColorAK800STGolf, Bright Golf and HDR Golf picture modesAK900ST97% Rec. 709; Golf, Bright Golf and HDR Golf picture modes
Hardware
| Spec | AK800ST | AK900ST |
|---|---|---|
| Light Source | Laser, IP5X sealed (20,000 hours; 30,000 Eco) | Laser, IP5X sealed (20,000 hours; 30,000 Eco) |
| Throw Ratio | 0.69–0.83 (1.2× motorized zoom) | 0.81–0.89 (1.1× motorized zoom) |
| Lens Shift | None — fixed 102.5% offset | V ±60% / H ±23% |
| Fan Noise | 34/29 dB (normal/eco, BenQ spec) | 34/29 dB (normal/eco, BenQ spec) |
| Weight | 5.9 kg (13 lb) | 10.2 kg (22.5 lb) |
- Light SourceAK800STLaser, IP5X sealed (20,000 hours; 30,000 Eco)AK900STLaser, IP5X sealed (20,000 hours; 30,000 Eco)
- Throw RatioAK800ST0.69–0.83 (1.2× motorized zoom)AK900ST0.81–0.89 (1.1× motorized zoom)
- Lens ShiftAK800STNone — fixed 102.5% offsetAK900STV ±60% / H ±23%
- Fan NoiseAK800ST34/29 dB (normal/eco, BenQ spec)AK900ST34/29 dB (normal/eco, BenQ spec)
- WeightAK800ST5.9 kg (13 lb)AK900ST10.2 kg (22.5 lb)
Performance
| Spec | AK800ST | AK900ST |
|---|---|---|
| Input Lag | 18.1 ms at 4K/60Hz; 4.8 ms at 1080p/240Hz | 18.1 ms at 4K/60Hz; 4.8 ms at 1080p/240Hz |
- Input LagAK800ST18.1 ms at 4K/60Hz; 4.8 ms at 1080p/240HzAK900ST18.1 ms at 4K/60Hz; 4.8 ms at 1080p/240Hz
Software
| Spec | AK800ST | AK900ST |
|---|---|---|
| Golf Features | Golf Mode 2.0, Auto Screen Fit 2.0 (flat and curved screens), autofocus, Golf Scene Memory (5 profiles) | Golf Mode 2.0, Auto Screen Fit 2.0 (flat and curved screens), autofocus, Golf Scene Memory (5 profiles) |
- Golf FeaturesAK800STGolf Mode 2.0, Auto Screen Fit 2.0 (flat and curved screens), autofocus, Golf Scene Memory (5 profiles)AK900STGolf Mode 2.0, Auto Screen Fit 2.0 (flat and curved screens), autofocus, Golf Scene Memory (5 profiles)
Who each one is better for
Honest persona fit, side by side.
Better for AK800ST
- Family Setup
Bright enough that the room does not need to be dark, with saved scene profiles for golf, movies and games.
Both fit
- Showroom
- Performance Seeker
Also worth a look
More comparisons with the AK800ST and AK900ST.
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