Comparison
TK710STi vs ZK431ST-B
A side-by-side look at how the BenQ TK710STi and Optoma ZK431ST-B 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 | TK710STi | ZK431ST-B |
|---|---|---|
| Resolution | True 4K (3840×2160) | 4K UHD (3840×2160) native |
| Lumens | 3,200 ANSI | 4,100 ANSI |
| HDR | HDR10 + HLG | — |
| Color | 95% Rec. 709 | — |
| Picture Mode | — | Golf Sim colour mode, factory-calibrated |
| Screen Size | — | 30–300 in |
- ResolutionTK710STiTrue 4K (3840×2160)ZK431ST-B4K UHD (3840×2160) native
- LumensTK710STi3,200 ANSIZK431ST-B4,100 ANSI
- HDRTK710STiHDR10 + HLGZK431ST-B—
- ColorTK710STi95% Rec. 709ZK431ST-B—
- Picture ModeTK710STi—ZK431ST-BGolf Sim colour mode, factory-calibrated
- Screen SizeTK710STi—ZK431ST-B30–300 in
Hardware
| Spec | TK710STi | ZK431ST-B |
|---|---|---|
| Light Source | Laser (20,000 hours) | DuraCore laser (30,000 hours, eco) |
| Throw Ratio | 0.69–0.83 (1.2× zoom) | 0.496:1 (ultra-short throw) |
| Fan Noise | ~47 dB | — |
| Lens | — | Golf Sim short-throw lens included |
| Keystone | — | ±15° with Smart Fit auto-alignment |
- Light SourceTK710STiLaser (20,000 hours)ZK431ST-BDuraCore laser (30,000 hours, eco)
- Throw RatioTK710STi0.69–0.83 (1.2× zoom)ZK431ST-B0.496:1 (ultra-short throw)
- Fan NoiseTK710STi~47 dBZK431ST-B—
- LensTK710STi—ZK431ST-BGolf Sim short-throw lens included
- KeystoneTK710STi—ZK431ST-B±15° with Smart Fit auto-alignment
Performance
| Spec | TK710STi | ZK431ST-B |
|---|---|---|
| Input Lag | 4ms @ 1080p/240Hz; 16.7ms @ 4K/60Hz | 16.7 ms at 4K/60Hz; 8.6 ms at 1080p/120Hz |
- Input LagTK710STi4ms @ 1080p/240Hz; 16.7ms @ 4K/60HzZK431ST-B16.7 ms at 4K/60Hz; 8.6 ms at 1080p/120Hz
Software
| Spec | TK710STi | ZK431ST-B |
|---|---|---|
| Includes | Android TV dongle | — |
- IncludesTK710STiAndroid TV dongleZK431ST-B—
Who each one is better for
Honest persona fit, side by side.
Better for TK710STi
- Recreational Player
True 4K with laser life and HDR — the courses look genuinely impressive and the projector lasts the life of the room.
Better for ZK431ST-B
- Space-Constrained
0.496:1 puts a 100-inch image up from under three feet, so it mounts close and stays out of the swing path. The tightest throw in the catalog alongside the GT2400HDR, but in 4K.
Both fit
- Performance Seeker
- Family Setup
Also worth a look
More comparisons with the TK710STi and ZK431ST-B.
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