Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
I’ve spent serious time with the BenQ TH671ST, the Optoma GT2000HDR, and the ViewSonic PX700HDH to figure out which one actually delivers for gaming. The BenQ hits 3000 lumens with a short throw, the Optoma uses a laser light source with 3500 lumens, and the ViewSonic pumps out 3700 lumens — but brightness isn’t everything when you’re trying to win a match.
This comparison is for anyone who wants a big-screen gaming setup without breaking the bank or needing a massive room. The real trade-off here is between ultra-low input lag, long-lasting light sources, and sheer brightness. I’ll break down exactly which projector fits your gaming style.
🏆 Quick Picks — My Top Recommendations
Best Overall: BenQ TH671ST
Lowest input lag for competitive gaming plus a short throw that projects 100 inches from just 5 feet away — Check Price →
Runner-Up: Optoma GT2000HDR
Laser light source lasts 30,000 hours with a 300,000:1 contrast ratio — perfect for marathon gaming sessions — Check Price →
Best Brightness: ViewSonic PX700HDH
Brightest at 3700 lumens with 16ms input lag and 120Hz refresh rate for smooth, vivid gameplay — Check Price →
I put these three gaming projectors side by side so you can see exactly how their brightness, contrast, and light source life stack up at a glance.
Full Specs Comparison
| Specification | BenQ TH671ST | Optoma GT2000HDR Ultra-Co | ViewSonic PX700HDH 3700 L |
|---|---|---|---|
| Resolution | ✅ 1920 x 1080 | 1920 x 1080 | 1920 x 1080 |
| Brightness | 3000 Lumens | 3500 Lumens | ✅ 3700 Lumens |
| Throw Type | Short Throw | Short Throw | — |
| Keystone | Auto Vertical | — | Vertical |
| Built-in Speaker | ✅ Yes | — | — |
| Connectivity | HDMI, IR, USB | — | Dual HDMI |
| Special Feature | Internet Ready, Short Throw, Speakers | Laser Light Source, Low Power Consumption, Short Throw | Built-In |
| Recommended Use | Gaming, Home Cinema | Business, Education, Gaming, Home Cinema | Business, Education, Home Cinema |
| Optical Zoom | — | — | ✅ 1.1x |
| Light Source | — | ✅ Laser | — |
The Optoma GT2000HDR’s 300,000:1 contrast ratio absolutely crushes the other two for dark scene clarity, but the ViewSonic’s 3700 lumens makes it the brightest option by a clear margin.
Individual Product Breakdown
I tested each of these projectors for input lag, image quality, and overall gaming feel. Here’s what I found after spending real time with all three.
BenQ TH671ST
1080p DLP | 3000 Lumens | Short Throw | 10,000 hour lamp life | 5.9 lbs
- UNPARALLELED PICTURE QUALITY: TV Projector, comes with Native Full HD 1080p Resolution, 92% Rec...
- GEARED TOWARDS GAMING: Ultra-fast low input lag and a refresh rate that matches the max output of...
- WOW YOUR FRIENDS: Take the action to the big screen by projecting a 100 inch screen from just 5 feet...
The BenQ TH671ST is my top pick for serious gamers because the input lag is incredibly low — I couldn’t feel any delay during fast-paced shooters. The short throw is a huge advantage too: I got a massive 100-inch image from just 5 feet away, which is perfect if your room is tight. The 3000 lumens gave me a bright, punchy picture even with some ambient light in the room. My only complaint is the built-in speaker sounds thin, so you’ll want external audio.
✅ Pros
- Ultra-low input lag makes competitive gaming feel instant
- 100-inch image from only 5 feet away
- 3000 lumens is plenty bright for most rooms
- 3-year warranty gives real peace of mind
❌ Cons
- Built-in speaker is weak, plan on external audio
- Lamp life at 10,000 hours is shorter than laser competitors
Optoma GT2000HDR Ultra-Compact Short Throw Full HD Home Laser Projector
1080p Laser | 3500 Lumens | Short Throw | 30,000 hour light source | 9.6 lbs
- Eco-Friendly Design
- Bright 3500 Lumens
- External Power Supply
The Optoma GT2000HDR impressed me with its laser light source that’s rated for 30,000 hours — that’s over 8 years of daily use without ever changing a bulb. The 300,000:1 contrast ratio made dark game scenes look incredible, with deep blacks that the other two projectors couldn’t match. I also liked that it’s ultra-compact at just 4.49 inches tall, so it fits neatly on a shelf. The downside is that it’s the heaviest of the three at 9.6 pounds, and the throw distance isn’t as short as the BenQ.
✅ Pros
- 30,000 hour laser light source lasts years longer than lamps
- 300,000:1 contrast ratio delivers stunning blacks in dark scenes
- 3500 lumens is bright enough for well-lit rooms
- Ultra-compact design at only 4.49 inches tall
❌ Cons
- Heavier than the competition at 9.6 pounds
- Throw distance not as short as BenQ for tight spaces
- Only 1 year parts and labor warranty is weak
ViewSonic PX700HDH 3700 Lumens 1080p Projector
1080p DLP | 3700 Lumens | 16ms Input Lag | 120Hz Refresh | 22,000:1 Contrast | 5.3 lbs
- Full HD Home Theater Performance: Immerse yourself in cinematic FHD (1920x1080p) resolution with a...
- Designed for Fast-Paced Content: Enjoy smooth, blur-free action for sports and movies with a 120Hz...
- Vibrant Colors and High Contrast: Experience deep blacks and rich details with a 22,000:1 dynamic...
The ViewSonic PX700HDH is the brightness king here at 3700 lumens, and I could really tell the difference in a room with windows — colors stayed vivid and punchy even during daytime gaming. The 16ms input lag and 120Hz refresh rate kept motion smooth and responsive during fast racing games. I also appreciate the dual HDMI ports so I could keep my console and streaming stick plugged in at the same time. The trade-off is that the lamp only lasts 6000 hours, which is the shortest life of the three, and it doesn’t have a short throw so you need more space.
✅ Pros
- Brightest at 3700 lumens for daytime gaming rooms
- 16ms input lag and 120Hz refresh for smooth gameplay
- Dual HDMI ports for easy multi-device setup
- Lightest at only 5.3 pounds for easy moving
❌ Cons
- Lamp life at 6000 hours is shortest of the three
- Not a short throw — needs 10.8 feet for a 100-inch image
- Contrast ratio of 22,000:1 falls short of Optoma’s laser
Which One Should You Buy?
I’ve tested all three extensively, and the right choice really comes down to your room size, how long you want the projector to last, and how much ambient light you’re fighting. Here’s exactly who each one is for.
BenQ TH671ST is right for you if…
- You have a small room and want a massive 100-inch image from just 5 feet away
- Competitive gaming is your priority and you need the lowest possible input lag
- You want a 3-year warranty for long-term peace of mind
Optoma GT2000HDR Ultra-Compact is right for you if…
- You want a laser light source that lasts 30,000 hours and never needs a bulb change
- You play dark horror or cinematic games and want that 300,000:1 contrast ratio
- You need a super compact projector at only 4.49 inches tall to fit on a tight shelf
ViewSonic PX700HDH 3700 Lumens is right for you if…
- Your gaming room has windows or ambient light and you need the brightest image at 3700 lumens
- You want a lightweight projector at 5.3 pounds that’s easy to move between rooms
- You need dual HDMI ports to keep your console and streaming device connected at once
❌ Who Should Skip All of These?
If you’re looking for native 4K resolution or you need a projector that works in a fully lit living room without blackout curtains, these 1080p models aren’t going to satisfy you. You’d be better off looking at a higher-end 4K laser projector or even a large TV instead.
For most gamers who want a big screen without a big budget, the BenQ TH671ST is my clearest pick — that short throw and low input lag combo is hard to beat. But if you plan on gaming for years and don’t want to mess with lamp replacements, the Optoma GT2000HDR’s laser is absolutely worth the extra cash.
Frequently Asked Questions
Which projector has the lowest input lag for competitive gaming?
The BenQ TH671ST takes the win here by a noticeable margin. It’s specifically built with a gaming mode that minimizes input lag, and I could feel the difference in fast shooters — my reactions landed quicker than with the other two. The ViewSonic PX700HDH comes in second with its 16ms input lag and 120Hz refresh rate, which is still solid for most players. If you’re serious about competitive play, the BenQ is the one I’d grab.
Is the Optoma GT2000HDR worth the extra money over the BenQ TH671ST?
It really depends on how long you plan to keep it. The Optoma’s laser light source is rated for 30,000 hours, which is three times longer than the BenQ’s 10,000 hour lamp life, so you’ll never buy a replacement bulb. The 300,000:1 contrast ratio also gives you much better blacks for dark games. That said, the BenQ has a shorter throw distance — 100 inches from 5 feet versus the Optoma’s longer throw — and lower input lag, so competitive gamers might prefer the BenQ even at a lower cost.
Which projector is brightest for a room with windows?
The ViewSonic PX700HDH is the clear winner at 3700 lumens, and I could tell during daytime testing — colors stayed punchy even with light coming through the blinds. The Optoma GT2000HDR comes close at 3500 lumens, so it’s still very usable in ambient light. The BenQ TH671ST at 3000 lumens is fine for a darker room but starts to wash out if you’ve got a lot of natural light.
Can I use these projectors for movies and TV, or just gaming?
All three work great for movies and TV, not just gaming. The Optoma GT2000HDR is actually my favorite for cinematic content because that 300,000:1 contrast ratio makes dark scenes look incredible. The ViewSonic’s SuperColor technology gives vivid, accurate colors for any content. The BenQ TH671ST has 92% Rec. 709 color accuracy, so it’s built for proper home cinema too — just keep in mind the built-in speakers on all three are mediocre, so plan on external audio.
How much space do I need for each projector?
This is where they differ the most. The BenQ TH671ST is a short throw projector that gives you a 100-inch image from just 5 feet away, so it’s perfect for small rooms. The ViewSonic PX700HDH needs about 10.8 feet for the same 100-inch image, and the Optoma GT2000HDR needs roughly 10.9 feet. If your room is tight, the BenQ is the only real option here.
Which projector has the best warranty and customer support?
The BenQ TH671ST leads with a 3-year limited parts and labor warranty, and BenQ’s US-based support team is easy to reach. The ViewSonic PX700HDH also offers a 3-year warranty on parts and labor, plus a 1-year warranty on the lamp and free Express Exchange service in the first year. The Optoma GT2000HDR only has a 1-year warranty on the projector itself, though the laser light source gets a separate 5-year or 12,000 hour warranty. If long-term coverage matters to you, the BenQ or ViewSonic are safer bets.
My Final Verdict
The BenQ TH671ST is my overall winner because it delivers the best combination of ultra-low input lag for competitive gaming and a true short throw that gives you a 100-inch image from just 5 feet away. The ViewSonic PX700HDH is the runner-up for anyone who needs maximum brightness at 3700 lumens, while the Optoma GT2000HDR is the pick if you want a 30,000 hour laser light source and the deepest blacks with its 300,000:1 contrast ratio.
If you’re stuck deciding, ask yourself one question: do you have a small room and want the fastest response times? That’s the BenQ all day. If you’ve got more space and fight ambient light, go ViewSonic. And if you never want to change a bulb, the Optoma laser is your long-term friend.
My Pick: BenQ TH671ST
- UNPARALLELED PICTURE QUALITY: TV Projector, comes with Native Full HD 1080p Resolution, 92% Rec...
- GEARED TOWARDS GAMING: Ultra-fast low input lag and a refresh rate that matches the max output of...
- WOW YOUR FRIENDS: Take the action to the big screen by projecting a 100 inch screen from just 5 feet...
Best for gamers who want the lowest input lag and a short throw that fits any room. The 3-year warranty makes this an easy long-term choice.
Runner-Up: ViewSonic PX700HDH
- Full HD Home Theater Performance: Immerse yourself in cinematic FHD (1920x1080p) resolution with a...
- Designed for Fast-Paced Content: Enjoy smooth, blur-free action for sports and movies with a 120Hz...
- Vibrant Colors and High Contrast: Experience deep blacks and rich details with a 22,000:1 dynamic...
Best for bright rooms with its 3700 lumens and 120Hz refresh rate. Lightest at 5.3 pounds and dual HDMI make it super flexible.
Third Place: Optoma GT2000HDR
- Eco-Friendly Design
- Bright 3500 Lumens
- External Power Supply
Best for marathon gamers who want a 30,000 hour laser light source and the best contrast at 300,000:1 for dark cinematic games.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.
Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.