BenQ BENTH671STRB Review: Short Throw Design with 3000 Lumens Brightness
The BenQ BENTH671STRB is a 1080p short throw DLP projector designed for console gamers and home entertainment enthusiasts who need a large screen in a compact space, featuring low input lag and high brightness.
By Elvis Dicki
Updated October 20, 2026
The BenQ BENTH671STRB is a full HD short throw projector that bridges the gap between dedicated home theater and responsive gaming setups. Primarily aimed at console gamers and home entertainment users, it leverages a DLP projection system to deliver bright, vibrant images from a remarkably close distance. This review analyzes its specifications, design, and feature set to determine if its blend of gaming-oriented performance and cinematic capability makes it a compelling choice for your living room or game room.
In essence, the BenQ TH671ST projector offers a solution for those wanting a big-screen experience without requiring a large, dedicated space, thanks to its short throw lens and features geared towards smooth, lag-free gameplay. For users whose priority is a large, bright 1080p image for movies and fast-paced console gaming from a short distance, this projector presents a strong case with its 3000 lumens brightness, 16ms input lag, and flexible setup options.
Prime BenQ TH671ST 1080p Short Throw Gaming Projector
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BenQ BENTH671STRB at a Glance
| Specification | Detail |
|---|---|
| Projection System | DLP |
| Native Resolution | 1080p (1920 x 1080) |
| Brightness (ANSI Lumens) | 3000 lm |
| Contrast Ratio (FOFO) | 10000:1 |
| Throw Ratio | 0.69 – 0.83 |
| Input Lag | 16ms (as per editor summary) |
| Light Source Life (Max) | Up to 15000 hours (LampSave mode) |
| Speaker | Built-in 5W x 1 |
| Connectivity | Dual HDMI (1.4a), USB, VGA, Audio In/Out |
| Warranty | 3-year limited |
Design and Build
The BenQ BENTH671STRB adopts a traditional, portable projector form factor with dimensions of 11.65 inches in length, 9.5 inches in width, and 4.6 inches in height. Its white chassis is designed for placement on a table or for ceiling mounting, offering flexibility in installation. The design is functional, with ventilation grilles and lens placement optimized for its short throw operation. The inclusion of a security bar slot indicates consideration for permanent installation in public or semi-public spaces, though its primary design language suggests a home entertainment focus. The physical controls on the unit are supplemented by a remote control for convenient operation from a distance.
Performance and Features
Visual Performance
At the core of the BenQ TH671ST’s performance is its DLP projection system, which outputs a native 1080p resolution. With a rated brightness of 3000 ANSI lumens, it is capable of maintaining image clarity in rooms with ambient light, a key advantage over lower-lumen models. The stated 92% Rec. 709 color accuracy and a 10000:1 contrast ratio aim to deliver vibrant and immersive cinematic visuals. The projector supports a wide range of signal inputs, from legacy VGA up to WUXGA_RB (1920×1200), and is compatible with common HDTV and 3D formats, including frame packing up to 1080p 24Hz.
Gaming-Centric Features
This model is explicitly geared towards gaming, a claim backed by its ultra-fast low input lag of 16ms. This spec is critical for console gaming, as it minimizes the delay between a controller input and the action appearing on screen, reducing motion blur and keeping gameplay responsive. The refresh rate is designed to match the maximum output of consoles like the Xbox One X and PS4 Pro. A dedicated ‘Game’ picture mode is included, which is typically optimized to enhance shadow details and overall visibility in darker game scenes.
Short Throw Lens and Setup Flexibility
The defining characteristic of the TH671ST is its short throw capability. With a throw ratio of 0.69 to 0.83, it can project a 100-inch image from just approximately 5 feet away. This is its most significant feature for users with limited space. Setup is further aided by a 1.2x optical zoom and vertical keystone correction of up to +/- 40 degrees, allowing for image adjustment without physically moving the projector. The projection offset is 102.5% ±2.5%, which is important to know for ceiling mount alignment.
Connectivity and Audio
Connectivity is comprehensive for a home entertainment device. It features dual HDMI 1.4a ports, with one supporting MHL, providing ample connections for a gaming console and a media streamer or Blu-ray player simultaneously. Other ports include a VGA input, a USB 2.0 Type-A port for powering devices like streaming sticks, a service USB port, and 3.5mm audio input and output jacks. For audio, a single built-in 5W speaker provides basic sound output. For a more immersive experience, users will likely connect external speakers or a soundbar via the audio-out jack, a common step for projector setups which you can learn more about in our guide to the best soundbars.
Setup, Support and Ownership
Setup is designed to be straightforward, leveraging the auto vertical keystone correction and flexible zoom to get a rectangular image quickly. The short throw nature simplifies placement, as it doesn’t require a long distance from the wall or screen. For long-term ownership, the lamp life is a major consideration. BenQ rates the lamp life from 4000 hours in Normal mode up to 15000 hours in Lampsave mode, which can significantly reduce long-term operating costs. The projector is backed by an industry-leading 3-year limited parts and labor warranty with US-based customer service, which provides considerable peace of mind. The manufacturer includes a power cord, quick start guide, remote control with battery, user manual CD, and warranty card in the box.
What Owners Say
Based on the available data, the BenQ BENTH671STRB holds a high aggregate rating. While specific written review excerpts are not provided in the data set, the consistent high score suggests general owner satisfaction with the product’s performance, particularly regarding its picture quality, brightness, and gaming performance. The award for ‘Best Projector for Gaming’ from High Ground Gaming in 2019 further underscores its reputation in the gaming community. For more expert picks on gaming gear, explore our tech gear section.
Pros and Cons
Pros
- Ultra-low 16ms input lag for responsive console gaming
- Short throw design enables large screens in small rooms
- High 3000 lumens brightness maintains clarity in ambient light
- Long lamp life (up to 15000 hours) lowers long-term costs
- Flexible setup with vertical keystone and 1.2x zoom
- Dual HDMI ports for easy connection of multiple sources
- Strong 3-year warranty with US-based support
Cons
- Maximum native resolution is limited to 1080p, not 4K
- Single 5W speaker provides only basic audio output
- No built-in wireless connectivity (e.g., Wi-Fi, Bluetooth)
- Form factor is portable but not ultra-compact
Who Should Buy It (and Who Should Skip It)
The BenQ BENTH671STRB is an ideal choice for console gamers (PlayStation, Xbox) who want a large, immersive display but are constrained by room size, thanks to its short throw lens. It’s also well-suited for general home entertainment users who value a bright image for movie watching in living rooms with some light control. The long lamp life and warranty make it a sensible option for buyers focused on long-term value.
This projector is not the best fit for users seeking the absolute highest resolution, such as 4K UHD content purists. Those who require integrated smart features or wireless streaming should look for models with built-in platforms or be prepared to add an external streaming device. Similarly, audiophiles or users wanting powerful built-in sound should budget for an external audio system, as the internal speaker is minimal. For users interested in the latest display technology for productivity, our reviews of the best ultra-wide monitors might be more relevant.
Final Verdict
The BenQ BENTH671STRB successfully carves out a specific niche by combining a genuinely useful short throw capability with performance specs that cater directly to the modern console gamer. The 3000 lumens brightness ensures the image remains watchable in less-than-ideal lighting, while the 16ms input lag addresses a critical concern for gaming responsiveness. Its 1080p resolution remains a mainstream standard, delivering sharp and detailed images for both games and films.
While it lacks some modern conveniences like wireless connectivity and its audio system is basic, these are common trade-offs in its category and are easily remedied with affordable external devices. The robust 3-year warranty is a significant confidence booster. Ultimately, if your primary needs are a big-screen, low-lag gaming experience or bright home cinema projection in a compact space, the BenQ TH671ST projector is a specialized and highly effective tool that justifies strong consideration, much like how specialized tools are chosen in other fields, as discussed in our resource on cybersecurity fundamentals.
FAQs
How far away does the projector need to be for a 100-inch screen?
Thanks to its short throw lens, the BenQ TH671ST can project a 100-inch diagonal image from a distance of just approximately 5 feet (about 1.5 meters) from the screen or wall. This makes it ideal for rooms where you cannot place the projector far back from the viewing surface.
Is this projector good for gaming on the PlayStation 5 or Xbox Series X?
Yes, its key gaming feature is the low 16ms input lag, which is beneficial for any console gaming to reduce delay. While it outputs a native 1080p signal, next-gen consoles can still connect and game smoothly. However, if you want to take full advantage of a console’s 4K output, you would need a native 4K projector.
Can I use this projector during the day without blackout curtains?
The 3000 lumens brightness provides good resistance to ambient light, making it usable in a room with some daylight or interior lighting. For the best contrast and color saturation, controlling light is always recommended, but its high brightness gives it an advantage over many lower-lumen home theater projectors in brighter environments.
What is not included in the box that I might need to buy?
You will need to purchase a compatible projection screen or have a suitable blank wall. For audio, you will likely want external speakers or a soundbar, as the built-in 5W speaker is minimal. For streaming content, you will need an external device like a Roku, Fire TV Stick, or Apple TV to connect via HDMI, as the projector itself does not have smart TV apps.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.