Comparison
ZK810TST vs ZU920TST
When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure
A side-by-side look at how the Optoma ZK810TST and Optoma ZU920TST compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.
Also worth a look
More comparisons with the ZK810TST and ZU920TST
Buy ZK810TST
Prices confirmed Nov 10, 2026 · we check every retailer daily
Buy ZU920TST
Prices confirmed Nov 10, 2026 · we check every retailer daily
When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure
Full specificationsEvery spec for both, line by line
Specifications
The numbers, lined up.
Image
| Spec | ZK810TST | ZU920TST |
|---|---|---|
| Resolution | 4K UHD (3840×2160) | WUXGA (1920×1200), 16:10 |
| Lumens | 8,500 (7,200 ANSI) | 9,800 (8,200 ANSI) |
- ResolutionZK810TST4K UHD (3840×2160)ZU920TSTWUXGA (1920×1200), 16:10
- LumensZK810TST8,500 (7,200 ANSI)ZU920TST9,800 (8,200 ANSI)
Hardware
| Spec | ZK810TST | ZU920TST |
|---|---|---|
| Light Source | DuraCore MultiColor laser (30,000 hours) | DuraCore laser (30,000 hours) |
| Throw Ratio | 0.65–0.75 (1.15× motorized zoom) | 0.65–0.75 (1.15× motorized zoom) |
| Lens Shift | Motorized; vertical ±50%, horizontal ±18% (datasheet; the page says ±55% / ±25%) | Motorized; vertical ±55%, horizontal ±25% from a centred image |
| Dimensions | 19.13 × 17.03 × 7.3 in (W × D × H, datasheet) | 19.13 × 16.83 × 7.3 in (W × D × H, with lens and feet, manual; the page says 19.13 × 16.43 × 6.93) |
- Light SourceZK810TSTDuraCore MultiColor laser (30,000 hours)ZU920TSTDuraCore laser (30,000 hours)
- Throw RatioZK810TST0.65–0.75 (1.15× motorized zoom)ZU920TST0.65–0.75 (1.15× motorized zoom)
- Lens ShiftZK810TSTMotorized; vertical ±50%, horizontal ±18% (datasheet; the page says ±55% / ±25%)ZU920TSTMotorized; vertical ±55%, horizontal ±25% from a centred image
- DimensionsZK810TST19.13 × 17.03 × 7.3 in (W × D × H, datasheet)ZU920TST19.13 × 16.83 × 7.3 in (W × D × H, with lens and feet, manual; the page says 19.13 × 16.43 × 6.93)
Requirements
| Spec | ZK810TST | ZU920TST |
|---|---|---|
| Throw Distance | 100 in at about 4.7–5.4 ft, from the ratio | 100 in (16:10) at about 4.6–5.3 ft, from the ratio |
- Throw DistanceZK810TST100 in at about 4.7–5.4 ft, from the ratioZU920TST100 in (16:10) at about 4.6–5.3 ft, from the ratio
Performance
| Spec | ZK810TST | ZU920TST |
|---|---|---|
| Input Lag | 16.8 ms at 4K/60Hz and 4.5 ms at 1080p/240Hz with Gaming Mode on; up to 50.2 ms with it off (Optoma's manual) | — |
- Input LagZK810TST16.8 ms at 4K/60Hz and 4.5 ms at 1080p/240Hz with Gaming Mode on; up to 50.2 ms with it off (Optoma's manual)ZU920TST—
Room planner
See each one in your sim room.
The planner draws each unit to scale with your room and your swing: where it mounts, the throw it needs, and whether your shadow crosses the light. Put in your room once, then switch units in the planner to compare.
Persona fitWho each one is better for
Who each one is better for
Honest persona fit, side by side.
Better for ZK810TST
- Showroom
4K, a short throw, 7,200 ANSI lumens and motorized lens shift in one unit: the projector for a very large showroom screen in a lit room, at a price to match.
Build your simulator in two minutes
Five questions. One tailored build with retailer links.
We ask about your budget, your room, and how you’ll use it. We return a complete build — launch monitor, mat, enclosure, projector, software, PC — with the reasoning behind every pick and the alternatives we considered.