BenQ TH671ST Full HD 1080p Projector Buying Guide

Published on Saturday, May 10, 2025

Who It’s For

The BenQ TH671ST is a dream come true for gamers craving an immense screen and lightning-fast, responsive gameplay thanks to its incredibly low input lag. Its short throw capability is pure magic for those in cozy apartments, dorms, or smaller living rooms, effortlessly conjuring a massive 100-inch display from just 1.5 meters. Home theater enthusiasts will appreciate its bright, vividly colored visuals for movies and series, even if the most discerning cinephiles might note the absence of HDR. It's also an excellent choice for casual users seeking a portable projector for memorable backyard movie nights or delivering impactful, low-key presentations.

Pros and Cons

Pros:

- Dazzling Brightness: Boasts 3000 ANSI lumens, ensuring images stay clear and engaging even in moderately lit rooms.
- Space-Saving Short Throw: Achieves a colossal 100-inch screen from a mere 1.5 meters, perfect for compact spaces.
- Ultimate Gamer Ally: Features an ultra-low 16ms input lag for seamless, lag-free gaming action.
- Vibrant, True-to-Life Colors: Delivers impressive color accuracy straight out of the box for lush visuals.
- Versatile Connectivity: Equipped with two HDMI ports for easy hookup to consoles, streaming devices, and laptops.
- Screen-Free Viewing: Ingenious wall color mode adjusts output for great images on colored walls, no dedicated screen needed.
- Marathon Lamp Life: Offers an extraordinary lamp life of up to 15,000 hours in eco mode for years of entertainment.

Cons:

- No HDR Support: Lacks High Dynamic Range, meaning it misses out on the enhanced contrast and deepest color nuances that some cinephiles crave.
- Basic Onboard Audio: The built-in 5W speaker is adequate for casual use, but audiophiles will prefer connecting external speakers for a more immersive sound experience.

Key Features

This projector is packed with crowd-pleasing features. It delivers stunning Full HD 1080p resolution for crisp, highly detailed visuals in games and movies. Its powerful 3000 ANSI lumens output ensures bright images in various lighting. The game-changing short throw lens projects a 100-inch image from just 1.5 meters. Gamers will celebrate the ultra-responsive 16ms input lag. A 5W built-in speaker handles audio for casual sessions, though external audio is recommended for full immersion. It includes two HDMI ports for versatile connectivity. Vertical keystone correction (up to 40 degrees) easily fixes distorted images from off-center placements. The smart wall color mode allows projection on colored surfaces. Furthermore, its lamp boasts an impressive lifespan of up to 15,000 hours in eco mode, promising long-term enjoyment.

Performance

The BenQ TH671ST is a stellar performer. Its 3000 ANSI lumens produce bright, vivid images that hold up well even in rooms with some ambient light, though it truly shines in dimmer settings. Colors are a highlight, offering near-perfect accuracy for SDR content, making games and movies look lush and lifelike. For gamers, the critical 16ms input lag ensures every command is instantaneous, crucial for fast-paced action. Contrast levels are solid in darker rooms, creating a satisfying cinematic atmosphere, although the absence of HDR means you won't get the extreme blacks or peak highlights some desire. The 5W speaker is surprisingly punchy for small to medium rooms, but for truly epic sound, pairing it with an external soundbar or speaker system is the way to go. Overall, it’s a dependable visual anchor for both dedicated gaming and casual viewing.

Setup and Usage

Setting up the TH671ST is refreshingly straightforward. It’s lightweight (5.9 lbs) and compact, making it easy to place on a coffee table or mount on a ceiling without fuss. The short throw design is a massive advantage, eliminating the need for a large room to achieve a huge picture—that 100-inch image from 1.5 meters is ideal for tight spots. Manual focus and zoom allow for precise picture tuning, while vertical keystone correction (up to 40 degrees) quickly rectifies any image distortion from imperfect placement. The clever wall color mode adjusts the image to look good on non-white walls, potentially saving you the cost of a screen. With an intuitive menu system and an included remote, navigating and tweaking settings is a breeze, ensuring you get to your gaming, movie watching, or presentations quickly.

Why Choose It

The BenQ TH671ST stands out as a superb choice for anyone looking to achieve a massive, immersive screen experience, especially when space is a luxury. Its potent combination of high brightness, brilliant short throw capability, and exceptionally low input lag makes it an undeniable winner for gamers and an ideal solution for those in apartments or smaller living areas. Added flexibility from features like wall color mode and effective keystone correction means you can project virtually anywhere with ease. While it forgoes some premium extras like HDR, it excels in delivering the fundamentals: vibrant, engaging visuals and consistently solid performance. The remarkably long lamp life further enhances its value, promising years of fuss-free entertainment. For battling in virtual worlds, binging series, or hosting movie nights, this projector delivers a truly significant impact and excellent value.