BenQ TK710STi vs Optoma GT2100HDR
BenQ TK710STi (#1, best overall) vs Optoma GT2100HDR (#3): in our Projectors for Golf Simulators scoring the BenQ TK710STi totals 9.1/10 and the Optoma GT2100HDR 8.9/10, the BenQ TK710STi leading on Image Brightness & Quality and Throw & Mounting Flexibility and the Optoma GT2100HDR on Value.
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TopsFive comparison scores
Side by side
| BenQ TK710STi | Optoma GT2100HDR | |
|---|---|---|
| Price | $1899 | $1027.64 |
| Resolution | 4K UHD (3840×2160) | 1080p Full HD (4K HDR input) |
| Rated Brightness | 3,200 ANSI lumens | 4,200 lumens |
| Throw Ratio | 0.69–0.83:1 (short throw) | 0.496:1 (fixed short throw) |
| Lowest Input Lag | 4.2 ms (1080p/240Hz); 16.7 ms (4K/60Hz) | 8.6 ms (1080p/120Hz) |
| Light Source | Laser (LED-free DLP) | DuraCore laser |
| Light Source Life | 20,000 hours | 30,000 hours |
| Zoom & Adjustment | 1.2x optical zoom, 3D keystone | Fixed lens, digital keystone |
| 100" Image From | About 5 ft (at 0.69:1) | About 3.6 ft |
How they differ in real use
Built from our projectors for golf simulators scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the BenQ TK710STi and the Optoma GT2100HDR made our Top 5 Projectors for Golf Simulators, at #1 (best overall) and #3. The best all-around golf-sim projector you can actually buy on Amazon: true 4K resolution makes course textures visibly sharper on a 10-foot impact screen than any 1080p rival, input lag is the lowest here at 1080p (4.2 ms at 240Hz), and its 1.2x optical zoom is the only real mounting flexibility in the group. It edges the brighter Optoma GT2400HDR because resolution and placement flexibility matter for the life of the build, while its brightness deficit (about 2,478 ANSI measured by ProjectorCentral) is solvable with basic light control. The proven mid-tier pick — Golfstead's 2026 guide ranks it the #1 golf simulator projector, and it delivers the same 4,200-lumen laser, 0.496:1 throw, and IP6X dust sealing as the GT2400HDR for less money. It sits below its successor only because the GT2400HDR adds a golf-specific picture mode and Amazon first-party availability for a modest premium, and it clearly beats the GT2000HDR below it on the 20% brightness advantage that matters most on an impact screen.
We score projectors for golf simulators on Image Brightness & Quality (30%), Input Lag (20%), Throw & Mounting Flexibility (20%), Reliability & Maintenance (15%) and Value (15%). On that basis the BenQ TK710STi totals 9.1 out of 10 and the Optoma GT2100HDR 8.9. The widest gap is Image Brightness & Quality, where the BenQ TK710STi scores 9.6 against 8.8 for the Optoma GT2100HDR — lumens on an impact screen, resolution, and color. Value also separates them: 8.9 for the Optoma GT2100HDR versus 8 for the BenQ TK710STi.
On paper, the specifications that actually differ: Resolution — 4K UHD (3840×2160) on the BenQ TK710STi versus 1080p Full HD (4K HDR input) on the Optoma GT2100HDR; Rated Brightness — 3,200 ANSI lumens on the BenQ TK710STi versus 4,200 lumens on the Optoma GT2100HDR; Throw Ratio — 0.69–0.83:1 (short throw) on the BenQ TK710STi versus 0.496:1 (fixed short throw) on the Optoma GT2100HDR; Lowest Input Lag — 4.2 ms (1080p/240Hz); 16.7 ms (4K/60Hz) on the BenQ TK710STi versus 8.6 ms (1080p/120Hz) on the Optoma GT2100HDR; Light Source — Laser (LED-free DLP) on the BenQ TK710STi versus DuraCore laser on the Optoma GT2100HDR; Light Source Life — 20,000 hours on the BenQ TK710STi versus 30,000 hours on the Optoma GT2100HDR.
Pricing as of July 18, 2026: $1,899 for the BenQ TK710STi and $1,027.64 for the Optoma GT2100HDR, a $871.36 difference in the Optoma GT2100HDR's favor. Owners praise the BenQ TK710STi for true 4K UHD resolution resolves course textures, grain on greens, and distant fairways far more sharply than the 1080p alternatives and 1.2x optical zoom plus 0.69-0.83:1 throw ratio gives real mounting flexibility — the only projector here that lets you fine-tune image size without moving the mount; the most common complaint is projectorCentral's measurements put real output around 2,478 ANSI lumens in the brightest mode — about 23% below the 3,200 rating, and practical calibrated modes are dimmer still. Owners praise the Optoma GT2100HDR for same 4,200-lumen laser output and 0.496:1 throw as the newer GT2400HDR, usually at a lower price and proven pick with an established track record in the golf-sim community — Golfstead's 2026 guide ranks it #1 overall; the most common complaint is amazon stock comes from third-party sellers rather than Amazon or Optoma directly, so price and availability fluctuate.
BenQ TK710STi
- True 4K UHD resolution resolves course textures, grain on greens, and distant fairways far more sharply than the 1080p alternatives
- 1.2x optical zoom plus 0.69-0.83:1 throw ratio gives real mounting flexibility — the only projector here that lets you fine-tune image size without moving the mount
- Very low input lag (4.2 ms at 1080p/240Hz, 16.7 ms at 4K/60Hz) for lag-free simulator response
- 20,000-hour laser light source means no lamp replacements over the life of a home sim
- ProjectorCentral's measurements put real output around 2,478 ANSI lumens in the brightest mode — about 23% below the 3,200 rating, and practical calibrated modes are dimmer still
- At around $1,899 it costs roughly $700 more than the brighter (though 1080p) Optoma GT2400HDR
- Needs about 7 ft of throw for a 10-ft-wide screen — tight bays under 11 ft deep may need the Optomas' 0.496:1 lens instead
Optoma GT2100HDR
- Same 4,200-lumen laser output and 0.496:1 throw as the newer GT2400HDR, usually at a lower price
- Proven pick with an established track record in the golf-sim community — Golfstead's 2026 guide ranks it #1 overall
- 8.6 ms input lag (1080p/120Hz) keeps GSPro and E6 ball flight feeling instantaneous
- IP6X dust protection and a 30,000-hour maintenance-free laser fit garage environments
- Amazon stock comes from third-party sellers rather than Amazon or Optoma directly, so price and availability fluctuate
- No golf-specific picture mode — the GT2400HDR adds that tuning for roughly $170 more
- Fixed lens, 1080p resolution, and no optical zoom (the same trade-offs as the rest of the GT line)
Which should you buy?
The BenQ TK710STi is the better fit for sim bays 11-16 ft deep where 4K sharpness is the priority and gSPro players who want the lowest possible input lag — it is the higher-scoring pick here, chiefly for Image Brightness & Quality and Throw & Mounting Flexibility. The Optoma GT2100HDR is the better fit for builders who want Optoma's full 4,200-lumen laser platform at the lowest price and buyers who prefer a model with an established owner track record, and the stronger choice if Value matters more to you than the overall score. If the $871.36 saving matters more than Image Brightness & Quality, the Optoma GT2100HDR is the better value. The BenQ TK710STi is a poor fit for bays shallower than about 11 ft (throw distance won't fit); the Optoma GT2100HDR is a poor fit for buyers who want first-party Amazon or manufacturer-direct stock.
Choose the BenQ TK710STi if
- Sim bays 11-16 ft deep where 4K sharpness is the priority
- GSPro players who want the lowest possible input lag
- Rooms with good light control where measured brightness suffices
Skip it if
- Bays shallower than about 11 ft (throw distance won't fit)
- Bright garages that need maximum lumens per dollar
Choose the Optoma GT2100HDR if
- Builders who want Optoma's full 4,200-lumen laser platform at the lowest price
- Buyers who prefer a model with an established owner track record
- Shallow bays needing a 100-inch image from under 4 ft
Skip it if
- Buyers who want first-party Amazon or manufacturer-direct stock
- Anyone who wants a dedicated golf picture mode out of the box
Common questions
Is the BenQ TK710STi better than the Optoma GT2100HDR?
In our Projectors for Golf Simulators ranking the BenQ TK710STi scores higher overall, 9.1 to 8.9, with the biggest advantage in Image Brightness & Quality. The Optoma GT2100HDR is stronger on Value, so it is the better pick if that matters most to you.
How much more does the BenQ TK710STi cost than the Optoma GT2100HDR?
$871.36 more as of July 18, 2026: $1,899 for the BenQ TK710STi against $1,027.64 for the Optoma GT2100HDR. Prices move, so the merchant page shows the current figure. What the extra buys is mostly Image Brightness & Quality — 9.6 versus 8.8 in our scoring.
What is the main difference between the BenQ TK710STi and the Optoma GT2100HDR?
The headline spec difference is Resolution: 4K UHD (3840×2160) on the BenQ TK710STi versus 1080p Full HD (4K HDR input) on the Optoma GT2100HDR. In use, the gap that matters most is Image Brightness & Quality (9.6 vs 8.8 in our scoring): lumens on an impact screen, resolution, and color.